Is hocmai.vn Safe? Security Score 80.2/100 | CyStack
hocmai.vn
Học trực tuyến - Hệ thống giáo dục HOCMAI
Dịch vụ học qua mạng với các chương trình ôn, luyện thi, thi thử đại học trực tuyến, dành cho học sinh trung học phổ thông, trung học cơ sở và tiểu học
Industry
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Origin
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Global rank
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Rank in
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Updated at
B80.2/100
Security level
Good
Data confidence
High
Scope checked
96.4%
The higher the score, the more externally observable protections the system has recorded. This page does not certify that the website is reputable, legitimate, or completely free of vulnerabilities.
Is the website “hocmai.vn” safe?
As of July 21, 2026 at 18:06, hocmai.vn has a security score of 80.2/100 (grade B – “Good”). CyStack’s automated assessment recorded 14 issues to review after completing 96.4% of applicable checks. The website owner should address “Session cookies protected from scripts (HttpOnly)” first, then review the remaining items in order of impact.
Does hocmai.vn show known scam, phishing, or malware signals?
At assessment time, CyStack did not find hocmai.vn or related infrastructure on any scam, phishing, or malware warning list after checking 5 online reputation sources. This result reflects external observations; it does not guarantee absolute safety or verify the organization’s legal status or reputation.
Compare the security level of each assessed category at a glance.
Network attack surface95.2/100 · Good95.5% of this category was checked
Web security31.3/100 · High risk100% of this category was checked
Frequently asked questions
What affects the security of hocmai.vn?
A valid SSL certificate still does not prove that hocmai.vn is safe, legitimate, or free of scam signals. For a more complete assessment, this report also checks phishing and malware, exposed email records, IPs and open ports, subdomains, technologies, and CVEs that may apply to observed versions.
Does hocmai.vn use HTTPS, and is its SSL certificate valid?
hocmai.vn used a valid SSL certificate at assessment time, valid until September 8, 2026. This status may change when the certificate expires or the server configuration changes.
Have @hocmai.vn email addresses appeared in exposed data or information-stealer (infostealer) logs?
Data sources
Data compiled from CyStack cybersecurity monitoring systems
CyStack compiles scan results from its internal cybersecurity monitoring systems, including CyStack VulnScan and CyStack Threat Intelligence, together with publicly available Internet data. The assessment only observes and analyzes information already available; it does not attempt unauthorized access, test passwords, send exploit code, or change or disrupt the assessed system.
There are 3 issues to prioritize because they have the greatest impact on the security of hocmai.vn.
Session cookies protected from scripts (HttpOnly)This check found a security issue.High
Check result
This check found a security issue.
Why it matters
HttpOnly prevents browser scripts from directly reading a cookie. It does not fix script injection, but it makes theft of session and authentication cookies more difficult.
What to do
Set HttpOnly on session and authentication cookies unless the application has a documented need to read them in browser code.
Data recorded by the system
Session-related cookies:
2
Session cookies using HttpOnly:
0
Cookies sent only over HTTPS (Secure)This check found a security issue.High
Check result
This check found a security issue.
Why it matters
The Secure attribute prevents a browser from sending a cookie over unencrypted HTTP. Without it, session or authentication data may be exposed to someone observing the network.
What to do
Set Secure on every session, authentication, and other sensitive cookie served by the HTTPS application.
Allowed browser content (CSP)This check found a security issue.High
Check result
This check found a security issue.
Why it matters
Content Security Policy (CSP) limits where scripts, styles, frames, and other browser content may come from. A strong policy reduces the impact if an attacker manages to inject content into a page.
What to do
Define only the sources the application needs, test the policy before activating it, and avoid broad wildcard (*) rules, unsafe-inline, and unsafe-eval where possible.
Transport encryption91.9/100 · Good100% of this category was checked
Threat reputation100/100 · Good100% of this category was checked
Vulnerability and technology risk100/100 · Good100% of this category was checked
Email authentication85.7/100 · Good100% of this category was checked
Data exposure50/100 · Review100% of this category was checked
Domain and DNS hygiene90/100 · Good55.6% of this category was checked
Issues to review
The complete list of issues to review, including the three priorities highlighted in the summary.
Session cookies protected from scripts (HttpOnly)Website protectionFailed
Check result
This check found a security issue.
Why it matters
HttpOnly prevents browser scripts from directly reading a cookie. It does not fix script injection, but it makes theft of session and authentication cookies more difficult.
What to do
Set HttpOnly on session and authentication cookies unless the application has a documented need to read them in browser code.
Data recorded by the system
Session-related cookies:
2
Session cookies using HttpOnly:
0
Cookies sent only over HTTPS (Secure)Website protectionFailed
Check result
This check found a security issue.
Why it matters
The Secure attribute prevents a browser from sending a cookie over unencrypted HTTP. Without it, session or authentication data may be exposed to someone observing the network.
What to do
Set Secure on every session, authentication, and other sensitive cookie served by the HTTPS application.
Content Security Policy (CSP) limits where scripts, styles, frames, and other browser content may come from. A strong policy reduces the impact if an attacker manages to inject content into a page.
What to do
Define only the sources the application needs, test the policy before activating it, and avoid broad wildcard (*) rules, unsafe-inline, and unsafe-eval where possible.
DMARC blocking policyEmail protectionNeeds review
Check result
The effective DMARC policy is none.
Why it matters
A policy of quarantine or reject tells receiving services to move suspicious mail to spam or refuse it. A monitoring-only policy (p=none) records the problem but does not ask receivers to stop spoofed mail.
Domain registration expiryDomain and DNSUnknown
Check result
The scan did not collect enough evidence for a reliable conclusion.
Why it matters
An expired domain stops directing users to the organization's services and may eventually become available to someone else. A domain close to expiry leaves little time to recover from payment or account problems.
What to do
Renew well before the expiry date, enable automatic renewal, and protect the payment method and registrar account.
Domain registration statusDomain and DNSUnknown
Check result
The scan did not collect enough evidence for a reliable conclusion.
Why it matters
Registrar or registry restrictions such as hold, redemption, or pending deletion can disable the domain. If they are not resolved, the organization may lose control of its website and email identity.
What to do
Resolve registration restrictions promptly, protect the registrar account with MFA, and keep ownership and contact information current.
Protection from deceptive framing (clickjacking)Website protectionFailed
Check result
This check found a security issue.
Why it matters
Another website can place this page inside a hidden or misleading frame and trick a user into clicking an unintended action. Frame restrictions tell browsers which sites, if any, may embed the page.
Without the nosniff setting, a browser may guess a file's type and treat harmless-looking content as executable code. This can turn an incorrect Content-Type into a security issue.
What to do
Send X-Content-Type-Options: nosniff on every response and return an accurate Content-Type.
HSTS availabilityHTTPS and encryptionFailed
Check result
The HTTPS response does not contain an effective HSTS policy.
Why it matters
HTTP Strict Transport Security (HSTS) tells a browser to use HTTPS automatically on future visits. This reduces the chance that a visitor is downgraded to an unencrypted connection.
What to do
After confirming that every required page works over HTTPS, send the Strict-Transport-Security header on all HTTPS responses.
CyStack confirmed at least 113 active DNS subdomains. 3 names may expose sensitive services; discovery was partial, so more may exist.
Why it matters
Names containing admin, development, staging, VPN, database, or monitoring terms may point attackers toward valuable systems. A name alone does not prove exposure, but it identifies a surface that should be reviewed.
SPF protection levelEmail protectionNeeds review
Check result
The terminal SPF policy is ~all.
Why it matters
The final SPF rule tells receiving services how confidently they should reject unlisted senders. A permissive result allows more spoofed mail to appear legitimate than a hard fail (-all).
What to do
Confirm that every legitimate sender is included, then end the SPF record with -all.
130 email exposure records have an identity domain exactly matching this target and are associated with approximately 26 infected devices. These are intelligence observations; they do not prove that the email accounts are still active or that the devices belong to the organization.
Why it matters
Infostealer intelligence may contain credentials associated with the domain, but it does not prove that an account is current, valid, or still exposed.
Permissions-Policy controls whether this page and embedded content may use features such as the camera, microphone, and location. Leaving unused features available creates unnecessary access paths.
When a visitor follows a link, the browser may send the previous page's URL to the destination. Paths and query values in that URL can reveal sensitive context to another website.
What to do
Use strict-origin-when-cross-origin or a stricter Referrer-Policy, and avoid placing secrets in URLs.
Allowed certificate issuers (CAA)Domain and DNSNeeds review
Check result
Found 0 applicable CAA record(s).
Why it matters
Certificate Authority Authorization (CAA) records state which certificate providers may issue certificates for the domain. This reduces the chance of an unintended provider issuing one.
What to do
Publish CAA records that allow only the certificate providers your organization actually uses.
DNS response protection (DNSSEC)Domain and DNSNeeds review
Check result
No DNSSEC DS delegation was found.
Why it matters
DNSSEC adds digital signatures so resolvers can detect forged DNS answers. This quick check confirms the parent domain has a DS record, but it does not validate the complete signature chain.
What to do
Sign the DNS zone, publish the matching DS record through the registrar, and monitor the signature chain after key changes.
Unnecessary public servicesPublic infrastructureUnknown
Check result
The service was observed on shared edge infrastructure and cannot be reliably attributed to this domain.
Why it matters
Every open service can be discovered and attacked and must be configured, monitored, and patched. Services without a clear public purpose add risk without providing business value.
What to do
Confirm the owner and purpose of every open port, then stop or firewall any service that is not intentionally public.
Data recorded by the system
Service attribution:
Shared Edge Ip
Complete:
Yes
Fingerprint Complete:
Yes
Technologies visible from the InternetSoftware vulnerabilitiesUnknown
Check result
Technology fingerprints could not be evaluated from the root response.
Why it matters
Response headers, page content, and other public clues suggest which technologies the service uses. These observations help explain the attack surface, but they can be incomplete or mistaken and do not by themselves confirm a vulnerability.
Other evaluated controls (34)
Certificate matches the websiteHTTPS and encryption
Check result
The certificate matches the requested target.
Why it matters
The certificate must list the exact hostname visitors requested in its Subject Alternative Names (SAN). A mismatch produces browser warnings because the certificate may belong to a different service.
What to do
Issue and deploy a certificate whose SAN list includes every public hostname served by this website address.
Data recorded by the system
Certificate domain names:
hocmai.vn, *.hocmai.vn
Assessed domain:
hocmai.vn
Browser-trusted certificateHTTPS and encryption
Check result
The certificate chains to a trusted root.
Why it matters
Browsers trust a website only when its certificate can be traced to a recognized certificate provider. An untrusted certificate causes warnings and prevents visitors from reliably confirming the website's identity.
What to do
Install a certificate from a provider trusted by common browsers and configure the server to send every required intermediate certificate.
Data recorded by the system
Certificate issuer:
CN=WE1,O=Google Trust Services,C=US
Secure website connection (HTTPS)HTTPS and encryption
Check result
A TLS handshake succeeded on port 443.
Why it matters
HTTPS encrypts data between visitors and the website and helps prove they reached the intended service. Without it, network observers may read or alter traffic and browsers may show a security warning.
What to do
Provide the entire website over HTTPS using a certificate trusted by common browsers.
Data recorded by the system
Encryption suite:
TLS AES 128 GCM SHA256
IP address:
104.26.4.172
Version:
TLS 1.3
Public DNS recordsDomain and DNS
Check result
The target resolved to 6 public IP address(es).
Why it matters
Public DNS connects the domain to its Internet addresses. Missing or incorrect records can make the service unreachable or send traffic to the wrong system.
What to do
Make sure the domain resolves only to its intended public IP addresses, and remove private, reserved, or outdated records.
No exact product version was observed, so there was no reliable CVE candidate to compare with the CISA Known Exploited Vulnerabilities catalog. This check is not applicable.
Why it matters
A possible CVE match also appears in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means attackers have used that vulnerability in real incidents. The match is urgent to investigate, but the installed software still needs to be confirmed as affected.
What to do
Verify the installed product immediately and follow the CISA and vendor instructions for mitigation, patching, or upgrading if it is affected.
Data recorded by the system
Possible vulnerabilities:
0
Possible vulnerabilities shown:
0
Public management service exposurePublic infrastructure
Check result
No public management service was found on the scanned TCP port set.
Why it matters
Remote administration services such as RDP, VNC, Docker, Kubernetes, and management consoles are high-value targets. Public exposure allows anyone on the Internet to attempt passwords or exploit an unpatched service.
What to do
Remove direct Internet access and require a VPN, a hardened access gateway, or trusted source networks; also use MFA where supported.
Data recorded by the system
Complete:
Yes
Fingerprint Complete:
Yes
Fingerprint Identified:
12
Fingerprint Targets:
12
Database or cache exposed to the InternetPublic infrastructure
Check result
No public datastore service was found on the scanned TCP port set.
Why it matters
Databases and caches often contain sensitive information and are normally used only by internal applications. Direct Internet access makes password attacks and configuration mistakes much more likely to become a data breach.
What to do
Listen only on private interfaces, allow connections only from required application systems, and require strong authentication and encryption.
Data recorded by the system
Complete:
Yes
Fingerprint Complete:
Yes
Fingerprint Identified:
12
Fingerprint Targets:
12
File-sharing service exposed to the InternetPublic infrastructure
Check result
No public file-sharing service was found on the scanned TCP port set.
Why it matters
Services such as SMB, NFS, and rsync can reveal or modify shared files and have a history of serious vulnerabilities. They rarely need to accept connections directly from the public Internet.
What to do
Limit file-sharing services to private networks or a tightly controlled VPN, and allow only the users and systems that require access.
Data recorded by the system
Complete:
Yes
Fingerprint Complete:
Yes
Fingerprint Identified:
12
Fingerprint Targets:
12
Unencrypted legacy servicePublic infrastructure
Check result
No public legacy cleartext service was found on the scanned TCP port set.
Why it matters
Older services such as Telnet, FTP, and unencrypted mail or directory protocols can send passwords and data in readable form. Anyone able to observe the network path may capture them.
What to do
Disable the legacy service or replace it with an encrypted alternative such as SSH, SFTP, HTTPS, or the secure version of the mail protocol.
Data recorded by the system
Complete:
Yes
Fingerprint Complete:
Yes
Fingerprint Identified:
12
Fingerprint Targets:
12
Cross-site access rules (CORS)Website protection
Check result
No issue was found by this check.
Why it matters
Cross-Origin Resource Sharing (CORS) decides which websites may read responses from this service in a visitor's browser. Rules that trust arbitrary origins, especially with login cookies, can expose private data to another website.
What to do
Allow only explicitly trusted websites, compare the Origin value with an exact approved list, and never allow login credentials with the wildcard origin (*).
Data recorded by the system
Arbitrary origin accepted:
No
Credentials allowed:
No
Allows all origins:
No
Certificate expiry and validityHTTPS and encryption
Check result
The certificate is valid from 2026-06-09T17:21:36Z to 2026-09-07T18:21:34Z.
Why it matters
A certificate works only between its start and expiry dates. An expired, not-yet-valid, or soon-to-expire certificate can trigger browser warnings and interrupt access to the website or API.
What to do
Use automatic renewal, monitor renewal failures, and alert the responsible team well before expiry.
Data recorded by the system
Days remaining:
48.3
Expires at:
Valid from:
Certificate key and signature strengthHTTPS and encryption
Check result
The certificate uses ECDSA-SHA256 with a 256-bit public key.
Why it matters
The certificate's public key and signature algorithm protect it from forgery. Keys that are too short or signatures based on obsolete algorithms provide less protection against modern attacks.
What to do
Use RSA with at least 2048 bits or a modern elliptic-curve key, and use SHA-256 or a stronger signature algorithm.
Data recorded by the system
Public-key algorithm:
ECDSA
Public-key size:
256
Signature algorithm:
ECDSA-SHA256
Supported TLS versionsHTTPS and encryption
Check result
Accepted versions: TLS 1.2, TLS 1.3.
Why it matters
TLS 1.0 and TLS 1.1 use outdated security designs and are no longer accepted by modern standards. Leaving them enabled allows older, weaker connection methods.
What to do
Disable TLS 1.0 and TLS 1.1, support TLS 1.2 securely, and enable TLS 1.3 where possible.
No independent abuse-list consensus was found across 5 definitive providers.
Why it matters
Security and email providers maintain DNS-based blacklists of IP addresses associated with spam, malware, or compromised systems. Several current, independent listings are a strong reason to investigate, although a shared IP can sometimes affect unrelated customers.
What to do
Verify each listing against the affected IP, investigate mail and host activity, fix the underlying cause, and then follow the provider's removal process.
Data recorded by the system
Blocklists with no match:
5
Confirmed blocklist matches:
No
Blocklists checked conclusively:
5
Blocklists unavailable:
1
Email spoofing protection (DMARC)Email protection
Check result
A DMARC policy was found.
Why it matters
DMARC lets the domain owner tell receiving services what to do when the visible From address is not verified by SPF or DKIM. Without DMARC, attackers have more opportunity to impersonate the domain in phishing email.
What to do
Publish a DMARC record at _dmarc, begin by collecting reports, and confirm that legitimate senders pass before applying a blocking policy.
The core DMARC policy tags passed structural validation.
Why it matters
Receiving services may ignore a DMARC record that contains duplicate fields, invalid values, or is published at the wrong DNS name. An ignored record provides no reliable protection from domain impersonation.
What to do
Publish one valid DMARC record at _dmarc and correct duplicate fields, unsupported values, and invalid report addresses.
Potential CVEs for observed versionsSoftware vulnerabilitiesNot applicable
Check result
The scan completed without observing an exact product version that could be matched reliably to CVE records. This check is not applicable; it does not mean the system is free of vulnerabilities.
Why it matters
The detected product and version were compared with vulnerability records from the National Vulnerability Database (NVD). A match is a lead, not confirmation: the installed software may include vendor fixes or may differ from the version visible on the Internet.
What to do
Confirm the exact installed package and read the vendor advisory. If that installation is affected, apply the vendor patch or upgrade to a fixed version.
SameSite limits when a browser includes cookies in requests started by another website. This helps prevent another site from silently making an authenticated request on a user's behalf.
What to do
Use SameSite=Lax or Strict by default. Use SameSite=None only for a required cross-site flow and always combine it with Secure.
Data recorded by the system
Cookies missing SameSite:
0
SameSite=None cookies missing Secure:
0
Total:
2
Insecure content on an HTTPS pageWebsite protection
Check result
No issue was found by this check.
Why it matters
An HTTPS page can still load scripts, frames, styles, or forms over unencrypted HTTP. An attacker on the network may alter that content and compromise the otherwise secure page.
What to do
Load every script, frame, stylesheet, and form destination over HTTPS, and remove or replace resources that do not support it.
Data recorded by the system
Insecure page resources:
0
Complete certificate chainHTTPS and encryption
Check result
The server presented 3 certificate(s).
Why it matters
The server must provide the intermediate certificates that connect its website certificate to a trusted provider. If any are missing, some browsers, mobile devices, or API clients may reject the connection.
What to do
Configure the server to send the website certificate followed by every required intermediate certificate, but not the root certificate.
Data recorded by the system
Certificates in the chain:
3
Automatic redirect to HTTPSHTTPS and encryption
Check result
The HTTP root redirects to HTTPS within the target domain.
Why it matters
Visitors may enter an address beginning with HTTP or follow an old link. Redirecting them immediately to HTTPS prevents the rest of the visit from continuing over an unencrypted connection.
What to do
Redirect every HTTP URL directly to its corresponding HTTPS URL without passing through another HTTP address.
Data recorded by the system
Final connection:
https
Website reachable:
Yes
Redirects followed:
1
Public directory listingSoftware vulnerabilities
Check result
The root page did not match a common automatic directory-index pattern.
Why it matters
When a web server automatically lists a directory, visitors may discover files that were never linked publicly, including backups, logs, or deployment artifacts.
What to do
Disable automatic directory indexes unless public file browsing is an intentional feature, and remove sensitive files from web-accessible folders.
Data recorded by the system
Directory listing pattern found:
No
Homepage only:
Yes
Authorized email senders (SPF)Email protection
Check result
An SPF record was found.
Why it matters
Sender Policy Framework (SPF) lists the systems allowed to send email for the domain. Without it, receiving services have less evidence to distinguish legitimate mail from spoofed mail.
What to do
Publish one SPF TXT record that includes every legitimate email service and no unauthorized sender.
More than one SPF record, invalid terms, or too many DNS lookups can make SPF return a permanent error. Receiving services may then be unable to verify authorized senders.
What to do
Keep one valid SPF record, remove invalid terms, and remain within the SPF limit of ten DNS-based lookups.
MX records direct incoming email to the correct mail servers. Broken records can stop delivery, while a Null MX clearly tells senders that the domain does not receive email.
What to do
Correct unreachable or outdated MX hosts, or publish a Null MX if the domain is not intended to receive email.
Data recorded by the system
Does not receive email:
No
Exposed software versionSoftware vulnerabilities
Check result
No issue was found by this check.
Why it matters
Exact web server or framework versions help attackers quickly look for known weaknesses that may apply. Hiding a version is not a substitute for patching, but unnecessary disclosure gives away useful targeting information.
What to do
Remove unnecessary version details from Server, X-Powered-By, error pages, and application metadata, and keep the software patched.
DMARC monitoring reportsEmail protection
Check result
Aggregate reporting is configured.
Why it matters
DMARC aggregate reports show which systems send email using the domain and which messages fail verification. They help find both impersonation attempts and legitimate services that need correction.
What to do
Add an aggregate report address (rua) that is protected and monitored, or use a trusted DMARC reporting service.
A domain should clearly state whether it receives email. Without valid MX records or a Null MX, senders may try an unintended server and delivery behavior becomes unpredictable.
What to do
Publish valid MX records for the intended mail servers, or a Null MX if the domain never accepts email.
Data recorded by the system
Does not receive email:
No
DNS service redundancyDomain and DNS
Check result
Found 2 authoritative name server(s).
Why it matters
Authoritative name servers tell visitors where the domain is hosted. Depending on only one server creates a single point of failure for the website and email.
What to do
Use at least two authoritative name servers, preferably on independent and resilient infrastructure.
Data recorded by the system
DNS servers:
anita.ns.cloudflare.com, sergi.ns.cloudflare.com
HSTS protection periodHTTPS and encryptionNot applicable
Check result
This check does not apply to the target.
Why it matters
The max-age value controls how long browsers remember to use HTTPS. A very short period provides limited protection, while includeSubDomains also covers every subdomain and can break one that does not support HTTPS.
What to do
Use a long max-age, and add includeSubDomains only after confirming that every active subdomain works correctly over HTTPS.
Blacklist check coverageIP reputationInformation
Check result
5 providers were definitive and 1 were inconclusive.
Why it matters
This shows how many independent blacklist services returned a clear result. A service that was unavailable was not checked successfully and must not be treated as a clean result.
Data recorded by the system
Blocklists with no match:
5
Confirmed blocklist matches:
No
Blocklists checked conclusively:
5
Blocklists unavailable:
1
Observed WAF, CDN, or edge serviceSoftware vulnerabilitiesInformation
Check result
Passive response signals identified one or more WAF, CDN, or edge products; enforcement was not tested.
Why it matters
Public response details suggest that a Web Application Firewall (WAF), CDN, or other edge service is present. This quick scan identified the provider but did not test whether attack blocking is configured or working correctly.
Observed 0 versioned product(s); 0 had exact CPE mappings and 0 completed lookup(s).
Why it matters
This shows how many detected products had reliable version information and an exact CPE identity, allowing them to be checked against CVE applicability data. A product that could not be checked must not be treated as free of known vulnerabilities.
Data recorded by the system
Possible vulnerabilities:
0
Possible vulnerabilities shown:
0
Total possible vulnerabilities:
0
Complete:
Yes
Observed infrastructure
Addresses, servers and services that are visible from the Internet.
Potentially exposed domain email addressesChecks infostealer data only for email addresses whose domain exactly matches this target. A record is not counted merely because someone visited or signed in to this website.130 Matching email exposure records
130Matching email exposure records
26Related infected devices (estimated)
These matching email records were observed previously, but they may already have been addressed or may no longer be valid. The device count estimates infected devices associated with these email records; it is not the number of devices owned by the organization.
Leak evidenceMost recent observation:
Email addressRelated infected deviceInfection evidenceRecorded time
Discovered subdomains (113+)Subdomains discovered by CyStack, with sensitive-looking names shown first. Availability is verified during this assessment; individual subdomains have not been separately security-tested.Partial
Public web contextThe website title, description, industry and popularity.
Page title
Học trực tuyến - Hệ thống giáo dục HOCMAI
Website category
—
Description
Dịch vụ học qua mạng với các chương trình ôn, luyện thi, thi thử đại học trực tuyến, dành cho học sinh trung học phổ thông, trung học cơ sở và tiểu học
Global rank
—
Rank in
—
Rank in industry
—
This is a quick, point-in-time check from outside the organization. It can surface visible risks, but it does not replace penetration testing or an authenticated assessment.
There are currently 130 exposed email records matching the hocmai.vn domain. These records may be old or already resolved. The website owner should verify them before resetting passwords or locking related accounts.
What technologies does hocmai.vn use, and which CVEs (security vulnerabilities) may apply?
The assessment identified 26 technologies on hocmai.vn, including 1 with a version, but CVE matching did not complete for every version. An empty result should not be treated as proof that no vulnerability exists.
Which public IPs, services, and ports does hocmai.vn expose?
The assessment observed 6 public IPs and 12 open ports for hocmai.vn; the infrastructure appears to be operated by cloudflare, Cloudflare, Inc.. An open port is not automatically a vulnerability, but every public service should be updated and appropriately restricted.
How many subdomains of hocmai.vn have been discovered?
The assessment observed 113+ public subdomains of hocmai.vn. This list can reveal additional entry points such as APIs, administration systems, or test environments, but it does not mean that every subdomain is risky.
Review the masked evidence and observation time, validate affected accounts and devices, then reset active credentials and sessions, enforce MFA, and remove malware where confirmed.
Data recorded by the system
Distinct affected devices observed:
26
Estimated infostealer-infected devices:
26
Evidence Mask Policy:
Length Preserving V2
Evidence samples shown:
10
Evidence sample limit:
10
Evidence samples available:
Yes
More evidence samples exist:
Yes
Matching exposed email records:
130
How exposed email records are matched:
Only email addresses whose domain exactly matches this website
Most recently observed:
Allow each sensitive browser feature only for the pages and trusted origins that require it, and disable the rest.
443HttpsTLS verifiedCCloudflareGGoogle AnalyticsGGoogle Tag Manager+5
ProductVersionPotential vulnerabilities
CCloudflareVersion not visibleCDNVersion not visible
ConfidenceMedium
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
CCloudflareVersion not visibleCDNVersion not visible
ConfidenceMedium
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Email addressB****@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-1B2B4AC436Infection evidenceAMOS StealerObserved application: Crypto TabEpic Privacy BrowserRecorded time
Email addressI***************@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-A050CD1B1AInfection evidenceStealCRecorded time
Email addressT******@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-A050CD1B1AInfection evidenceStealCRecorded time
Email addressK********@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-A050CD1B1AInfection evidenceStealCRecorded time
Email addressV********@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-A050CD1B1AInfection evidenceStealCRecorded time
Email addressK*************@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-A050CD1B1AInfection evidenceStealCRecorded time
Email addressJ*********@hocmai.vnRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-A050CD1B1AInfection evidenceStealCRecorded time
GGoogle Tag ManagerVersion not visibleTag ManagersVersion not visible
ConfidenceMedium
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
GGoogle Tag ManagerVersion not visibleTag ManagersVersion not visible
ConfidenceMedium
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
GGoogle Tag ManagerVersion not visibleTag ManagersVersion not visible
ConfidenceMedium
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.