Is www.redhat.com Safe? Security Score 90.7/100 | CyStack
www.redhat.com
Red Hat - We make open source technologies for the enterprise
Red Hat is the world’s leading provider of enterprise open source solutions, including high-performing Linux, cloud, container, and Kubernetes technologies.
Industry
Computers, Electronics and Technology / Programming and Developer Software
Origin
United States
Global rank
#15,245
Rank in United States
#10,927
Updated at
A90.7/100
Security level
Excellent
Data confidence
High
Scope checked
92.9%
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.redhat.com” safe?
As of September 15, 2026 at 21:06, www.redhat.com has a security score of 90.7/100 (grade A: “Excellent”). CyStack’s automated assessment recorded 8 issues to review after completing 92.9% of applicable checks. The website owner should address “Allowed browser content (CSP)” first, then review the remaining items in order of impact.
Does www.redhat.com show known scam, phishing, or malware signals?
At assessment time, CyStack did not find www.redhat.com 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.
Potentially exposed domain email addressesChecks infostealer data for email addresses ending in @redhat.com, the registered domain of the assessed website www.redhat.com. A record is not counted merely because someone visited or signed in to the website.77 matching email exposure records
77Matching email exposure records
31Related 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.
Frequently asked questions
What affects the security of www.redhat.com?
A valid SSL certificate still does not prove that www.redhat.com 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.redhat.com use HTTPS, and is its SSL certificate valid?
www.redhat.com used a valid SSL certificate at assessment time, valid until March 11, 2027. This status may change when the certificate expires or the server configuration changes.
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.redhat.com.
Allowed browser content (CSP)The CSP on the inspected root HTML response contains a broad, unsafe, or missing script-source control recognized by this bounded check.High
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.
Scope of this check
This check only evaluates the homepage response and content that the scanner could reach. Other pages and sign-in flows may use different settings.
Evidence and check scope
Configured:
Yes
Number of policies:
1
Weak settings found:
Broad Script Source, Unsafe Eval, Unsafe Inline Without Nonce Or Hash
DMARC blocking policyThe effective DMARC policy is quarantine and applies to 100% of messages.High
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.
What to do
After every legitimate sender passes DMARC, move gradually to quarantine and then reject, covering 100% of messages.
HSTS availabilityThe HTTPS response does not contain an effective HSTS policy.Medium
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.
Leak evidenceMost recent observation:
Email addressRelated infected deviceInfection evidenceRecorded time
Email addressr******@redhat.comRelated infected deviceU************** (Windows 11 Home 10.0.26200 (x64))CzechiaIOC reference: IOC-8C80163D3EInfection evidenceCSSigInfoStealerObserved application: Chrome Default (147.0.7727.56)Recorded timeEmail addressL*****@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-3F6D95A783Infection evidenceStealCEmail addressC*************@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-2737047F54Infection evidenceStealCEmail addressL***********@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-2737047F54Infection evidenceStealCEmail addressA***********@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-2737047F54Infection evidenceStealCEmail addressE********@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-2737047F54Infection evidenceStealCEmail addressA******@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-2737047F54Infection evidenceStealCEmail addressW***************@redhat.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-2737047F54Infection evidenceStealCEmail addressm******@redhat.comRelated infected deviceNo safely shareable device details are available for this record.CzechiaIOC reference: IOC-2436C52CA1Infection evidenceEmail addresss*****@redhat.comRelated infected deviceH********** (Windows 11 Home)United StatesIOC reference: IOC-EA90F3D4A1Infection evidence
At most 10 recent redacted records are shown to protect sensitive information.
Data provided by
Discovered subdomains (388+)Subdomains of redhat.com, the registered domain of the assessed website www.redhat.com. 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
Red Hat - We make open source technologies for the enterprise
Website category
Computers, Electronics and Technology / Programming and Developer Software
Description
Red Hat is the world’s leading provider of enterprise open source solutions, including high-performing Linux, cloud, container, and Kubernetes technologies.
Global rank
#15,245
Rank in United States
#10,927
Rank in industry
#246
Final URL
https://www.redhat.com/en
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 @redhat.com email addresses appeared in exposed data or information-stealer (infostealer) logs?
There are currently 77 exposed email records matching the redhat.com 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 www.redhat.com use, and which CVEs (security vulnerabilities) may apply?
The assessment identified 16 technologies on www.redhat.com, 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 www.redhat.com expose?
The assessment observed 3 public IPs and 2 open ports for www.redhat.com. 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 redhat.com have been discovered?
The assessment observed 388+ public subdomains of redhat.com. 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 
United States
