github.com Security Score

FairSRS Score 80/100 · Grade B · last scanned Sep 26, 2026

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FairSRS Score - github.com

80/100
FairSRS Score
B
Grade
Acceptable
Signal Rating
24 positive signals
5 risk signals
83 host(s), 299 subdomain(s)
Scan coverage. This report analyzed github.com and all 299 discovered subdomains.

Category Breakdown

Categories with items of opportunity are clickable - open one to see the action items that would raise its score.

82/100
68/100
78/100
Vulnerability Exposure
95/100
76/100

Security Signals

Risk Signals (5)

CategorySignalPoints
Email SecurityOpen SMTP (Port 25)
SMTP port 25 is open -- potential for email relay abuse
out-21.smtp.github.com 192.30.252.204 :25
-8
Email SecuritySPF Soft Fail (~all)
SPF record uses soft fail (~all) instead of hard fail (-all) -- mail servers may still accept spoofed email
copilot.github.com 140.82.113.17
-6
TLS / CryptographyTLS 1.0 Enabled
Deprecated TLS 1.0 is still enabled
examregistration-api.github.com 20.118.56.3 :443 · 1 of 147 SSL hosts (1%)
0
TLS / CryptographyTLS 1.1 Enabled
Deprecated TLS 1.1 is still enabled
examregistration-api.github.com 20.118.56.3 :443 · 1 of 147 SSL hosts (1%)
0
TLS / CryptographyCertificate Hostname Mismatch
Domain not found in certificate Subject Alternative Names
www.pypi.pkg.github.com 140.82.112.34 :443 + 10 other hosts · 11 of 147 SSL hosts (7%)
0

Positive Signals (24)

CategorySignalPoints
TLS / CryptographyTLS 1.3 Supported
Server supports TLS 1.3
copilot.github.com 140.82.113.17 :443 + 119 other hosts · 120 of 147 SSL hosts (82%)
+8
TLS / CryptographyStrong Ciphers Only
Only strong cipher suites detected (ECDHE+AES-GCM/ChaCha20)
copilot.github.com 140.82.113.17 :443
+8
TLS / CryptographyValid Certificate
SSL/TLS certificate is valid and not expired
copilot.github.com 140.82.113.17 :443 + 146 other hosts · 147 of 147 SSL hosts (100%)
+8
TLS / CryptographyReputable Certificate Authority
Certificate issued by a reputable CA
copilot.github.com 140.82.113.17 :443 + 146 other hosts · 147 of 147 SSL hosts (100%)
+5
TLS / CryptographyHSTS Enabled
HTTP Strict Transport Security header present
uploads.github.com 140.82.113.14 :443 + 25 other hosts · 26 of 147 SSL hosts (18%)
+1
TLS / CryptographyOCSP Stapling
OCSP stapling is enabled
mailing.github.com 185.199.110.105 :443 + 2 other hosts · 3 of 147 SSL hosts (2%)
+0
TLS / CryptographyPQC-Ready Infrastructure
Server supports TLS 1.3 with TLS_AES_256_GCM_SHA384 cipher suite, indicating readiness for post-quantum hybrid key exchange (X25519 + ML-KEM-768)
out-21.smtp.github.com 192.30.252.204 :25 + 28 other hosts · 29 of 147 SSL hosts (20%)
+2
Network SecurityWAF/CDN Detected
Protected by Cloudflare
emails.github.com 104.17.74.206 + 1 other host · 2 of 122 HTTP hosts (2%)
+0
Network SecurityEnterprise Cloud Hosting
Hosted on Azure
livesend.github.com 172.185.17.246
+8
Network SecurityNo High-Risk Ports Detected
No high-risk service ports (RDP, Telnet, FTP, etc.) are exposed
copilot.github.com 140.82.113.17
+5
Network SecurityNo Database Ports Exposed
No database ports (MySQL, PostgreSQL, MongoDB, etc.) are exposed
copilot.github.com 140.82.113.17
+5
Application HardeningNo Server Version Disclosure
Server header does not reveal software version
copilot.github.com 140.82.113.17 + 121 other hosts · 122 of 122 HTTP hosts (100%)
+10
Application HardeningContent Security Policy
CSP header is present
developers.github.com 185.199.111.153 :80 + 39 other hosts · 40 of 122 HTTP hosts (33%)
+3
Application HardeningX-Frame-Options
Clickjacking protection header present
uploads.github.com 140.82.113.14 :443 + 19 other hosts · 20 of 122 HTTP hosts (16%)
+1
Application HardeningX-Content-Type-Options
MIME type sniffing protection present
uploads.github.com 140.82.113.14 :443 + 22 other hosts · 23 of 122 HTTP hosts (19%)
+1
Application HardeningReferrer-Policy
Referrer policy header present
docs.github.com 185.199.108.154 :443 + 8 other hosts · 9 of 122 HTTP hosts (7%)
+0
Application HardeningNo Default Pages
No default/welcome pages detected
copilot.github.com 140.82.113.17 + 121 other hosts · 122 of 122 HTTP hosts (100%)
+5
Application HardeningNo Admin Interfaces Exposed
No exposed admin panels detected
copilot.github.com 140.82.113.17
+8
Vulnerability ExposureNo CVEs Detected
No known vulnerabilities detected across all hosts
copilot.github.com 140.82.113.17
+30
Vulnerability ExposureNo Outdated Software Detected
All detected software versions are within acceptable ranges
copilot.github.com 140.82.113.17
+15
Email SecurityDMARC Reject Policy
DMARC policy set to reject unauthenticated email
copilot.github.com 140.82.113.17
+15
Email SecurityDKIM Record Found
DKIM record found (selector: selector1)
copilot.github.com 140.82.113.17
+10
Email SecurityEnterprise Email Gateway
Email protected by Microsoft EOP
copilot.github.com 140.82.113.17
+10
Email SecurityManaged DNS Provider
Using Amazon Route 53
copilot.github.com 140.82.113.17
+5

Vulnerability Exposure

0 Critical 0 High 0 Medium 0 Low

No high-severity (CVSS ≥ 7.0) CVEs identified in external data.

Open Ports & Services

PortServiceHostFlag
80httpcopilot.github.com 140.82.113.17
443httpscopilot.github.com 140.82.113.17
80httpdevelopers.github.com 185.199.111.153
443httpsdevelopers.github.com 185.199.111.153
25Postfix smtpdout-21.smtp.github.com 192.30.252.204
25Postfix smtpdout-7.smtp.github.com 192.30.252.198
25Postfix smtpdsmtp.github.com 140.82.114.32
80httpforgoodfirstissue.github.com 185.199.110.153
443httpsforgoodfirstissue.github.com 185.199.110.153
80httpunity.github.com 185.199.108.153
443httpsunity.github.com 185.199.108.153
80httpuploads.github.com 140.82.113.14
443httpsuploads.github.com 140.82.113.14
80httpmailing.github.com 185.199.110.105
443httpsmailing.github.com 185.199.110.105
25Postfix smtpdin-6.smtp.github.com 140.82.113.32
80httpdocs.github.com 185.199.108.154
443httpsdocs.github.com 185.199.108.154
80httpwww.pypi.pkg.github.com 140.82.112.34
443httpswww.pypi.pkg.github.com 140.82.112.34
80httpbounty.github.com 185.199.109.153
443httpsbounty.github.com 185.199.109.153
25Postfix smtpdout-5.smtp.github.com 192.30.252.196
25Postfix smtpdout-25.smtp.github.com 192.30.252.208
80httpemails.github.com 104.17.74.206
443httpsemails.github.com 104.17.74.206
80httpcdn-185-199-110-133.github.com 185.199.110.133
443httpscdn-185-199-110-133.github.com 185.199.110.133
25Postfix smtpdout-18.smtp.github.com 192.30.252.201
25Postfix smtpdout-2.smtp.github.com 192.30.252.193
25Postfix smtpdout-28.smtp.github.com 192.30.252.211
443httpslive-staging.github.com 143.55.70.2
80httplearn.github.com 140.82.114.22
443httpslearn.github.com 140.82.114.22
80httpexamregistration-api.github.com 20.118.56.3
443httpsexamregistration-api.github.com 20.118.56.3
80httplb-140-82-113-4-iad.github.com 140.82.113.4
443httpslb-140-82-113-4-iad.github.com 140.82.113.4
22sshlb-140-82-113-4-iad.github.com 140.82.113.4
80httpresources.github.com 185.199.109.133

Technology Inventory

Sectigo LimitedGitHub.comGitHub PagesVarnishFastlyLet's EncryptPostfix smtpdHSTScloudflareCloudflaregithub.comMicrosoft CorporationApache httpdApacheApache HTTP ServerDigiCert IncnginxCloudflare Browser InsightsGoogle Trust ServicesAzureGCPMicrosoft EOPAmazon Route 53NS1

FairSRS™ Security Rating Signals · Generated by Fair TPRM · Sep 26, 2026 11:25 AM UTC
Important - how to read this rating. Security Rating Services (SRS) like FairSRS provide signals to help identify potential third-party risk from externally observable data. They should not be relied upon as the sole measure of an organization’s security posture. External signals are incomplete by nature. In particular, some organizations deliberately run deception technology (honeypots and decoy services) that is designed to appear vulnerable to lure and study attackers - such systems may surface here as risk signals but can actually reflect a mature, positive security program. Always corroborate these signals with direct assessment and evidence before drawing conclusions.

What is the FairSRS Score?

The FairSRS Score is a free security rating from 0 to 100 that measures a company’s externally observable security posture - the same outside-in signals a security team (or an attacker) can see without any access to the target’s internal systems. Enter any company domain above and FairSRS scans publicly available data to grade its third-party and vendor security risk in seconds, then generates a shareable report you can download as a PDF.

It’s powered by the free, open-source Fair TPRM platform and the same continuous security monitoring engine used inside our vendor risk management workflows - so the rating you see here is the same one security teams rely on to monitor their vendors.

What the score measures

Your FairSRS Score is a weighted blend of five externally observable security categories:

  • TLS / Cryptography - TLS protocol versions, certificate validity, HSTS, cipher strength, and post-quantum readiness.
  • Network Security - open ports, exposed services, WAF/CDN protection, and hosting posture.
  • Application Hardening - security headers, software version disclosure, exposed admin panels, and directory listings.
  • Vulnerability Exposure - known CVEs on internet-facing services, weighted by severity.
  • Email Security - SPF, DKIM, DMARC, and MTA-STS configuration that protects against spoofing.

Each finding is a signal that adds or subtracts points, producing a 0-100 score and an A-F grade. To turn these signals into quantified financial risk, pair them with FAIR risk analysis and a full GRC compliance program.

Recently scored vendors

Every domain below has a saved FairSRS Score you can open directly - no scan, no waiting, ranked highest score to lowest. Scores reflect the most recent scan and are re-checked when someone re-scans the domain.

Frequently asked questions

Is the FairSRS vendor security score really free?

Yes. FairSRS is completely free with no login, account, or credit card required. It is powered by the free, open-source Fair TPRM platform.

What does the FairSRS Score measure?

It measures a company’s externally observable security posture across five categories - TLS/cryptography, network security, application hardening, vulnerability (CVE) exposure, and email security - and combines them into a 0-100 score with an A-F grade.

How is the score calculated?

FairSRS analyzes publicly observable data about a domain - open services, TLS and certificate configuration, security headers, known CVEs, and DNS-based email protections such as SPF, DKIM and DMARC - and weights each signal to produce the score. No login or access to the target is required.

Is my data private?

Yes. No account is needed, and if you choose to have the report emailed, your address is used only to send that one report, encrypted in transit, then permanently deleted. We never store it, never sell or share it, and no one from Fair TPRM will contact you.

Can I scan any company or vendor?

Yes. Enter any public company domain to check its external security posture. It is designed to help you assess third-party vendors and suppliers.

How accurate is an external security rating?

A security rating provides signals to help identify risk, but it is not a complete picture and should not be the sole basis for judging a company’s security. Some organizations run deception technology that can appear vulnerable but reflects a mature program. Always corroborate with direct assessment.