Is www.dst.udn.vn Safe? Security Assessment | CyStack
www.dst.udn.vn
Đại học Đà Nẵng
Industry
Science and Education / Education
Origin
Vietnam
Global rank
#19,693
Rank in Vietnam
#300
Updated at
U77.8/100
Security level
UnratedProvisional
Data confidence
Low
Scope checked
49.3%
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 “www.dst.udn.vn” safe?
As of September 12, 2026 at 04:07, www.dst.udn.vn has a security score of 77.8/100 (grade U: “Unrated”), but this result is provisional because some required evidence is incomplete. CyStack’s automated assessment recorded 5 issues to review after completing 49.3% of applicable checks. The website owner should address “Email spoofing protection (DMARC)” first, then review the remaining items in order of impact.
Does www.dst.udn.vn show known scam, phishing, or malware signals?
1 checked network threat source listed www.dst.udn.vn or related infrastructure. This signal needs verification; it does not by itself prove that the website is a scam or is distributing malware.
Potentially exposed domain email addressesChecks infostealer data for email addresses ending in @udn.vn, the registered domain of the assessed website www.dst.udn.vn. A record is not counted merely because someone visited or signed in to the website.0 matching email exposure records
0Matching email exposure records
0Related infected devices (estimated)
No exposure record was found for an email address ending in @udn.vn in the available data. This does not guarantee that an exposure has never occurred.
Data provided by
Frequently asked questions
What affects the security of www.dst.udn.vn?
A valid SSL certificate still does not prove that www.dst.udn.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 www.dst.udn.vn use HTTPS, and is its SSL certificate valid?
HTTPS on www.dst.udn.vn could not be reached during this assessment, so its SSL certificate and transport encryption could not be evaluated.
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.
These 3 failed checks or warnings have the greatest impact on the result for www.dst.udn.vn.
Email spoofing protection (DMARC)No DMARC record was found for the registrable email domain.High
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.
DNS abuse-list reputationAbuse listings were reported by DroneBL, but no single IP had independent confirmation.High
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.
Potentially sensitive subdomainsCyStack confirmed at least 535 active DNS subdomains of udn.vn. 28 names may expose sensitive services; discovery was partial, so more may exist.Medium
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.
What to do
Discovered subdomains (535+)Subdomains of udn.vn, the registered domain of the assessed website www.dst.udn.vn. Sensitive-looking names are shown first; individual subdomains have not been separately security-tested.Partial
Public web contextThe website title, description, industry and popularity.Website rankings and industry category are based on data from Similarweb
Page title
Đại học Đà Nẵng
Website category
Science and Education / Education
Description
–
Global rank
#19,693
Rank in Vietnam
#300
Rank in industry
#18
Final URL
–
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.
Have @udn.vn email addresses appeared in exposed data or information-stealer (infostealer) logs?
No record associated with an @udn.vn email address was found in the currently available data. This does not rule out incidents that have not been observed.
Which public IPs, services, and ports does www.dst.udn.vn expose?
The assessment observed 1 public IPs and 0 open ports for www.dst.udn.vn. An open port is not the same as a vulnerability, but the website owner should keep every public service updated and appropriately restrict access.
How many subdomains of udn.vn have been discovered?
The assessment observed 535+ public subdomains of udn.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.
Industry
Updated at 
Vietnam
