microsoft.com Security Score

FairSRS Score 83/100 · Grade B · last scanned Jul 10, 2026

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FairSRS Score - microsoft.com

83/100
FairSRS Score
B
Grade
Acceptable
Signal Rating
21 positive signals
1 risk signals
35 host(s), 50 subdomain(s)
Scan coverage. This report analyzed microsoft.com plus a random sample of 50 of its 263 discovered subdomains (up to 50 subdomains are checked per scan). The score reflects this sampled portion of the external attack surface, so re-scanning may surface additional hosts.

Category Breakdown

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

73/100
80/100
73/100
Vulnerability Exposure
95/100
Email Security
100/100

Security Signals

Risk Signals (1)

CategorySignalPoints
TLS / CryptographyCertificate Hostname Mismatch
Domain not found in certificate Subject Alternative Names
3p-dataconnectors.microsoft.com 20.118.40.7 :443 · 1 of 34 SSL hosts (3%)
0

Positive Signals (21)

CategorySignalPoints
TLS / CryptographyTLS 1.3 Supported
Server supports TLS 1.3
52-113-36-78.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.113.36.78 :443 + 4 other hosts · 5 of 34 SSL hosts (15%)
+1
TLS / CryptographyStrong Ciphers Only
Only strong cipher suites detected (ECDHE+AES-GCM/ChaCha20)
52-113-11-87.relay.teams.microsoft.com 52.113.11.87 :443
+8
TLS / CryptographyValid Certificate
SSL/TLS certificate is valid and not expired
52-113-11-87.relay.teams.microsoft.com 52.113.11.87 :443 + 33 other hosts · 34 of 34 SSL hosts (100%)
+8
TLS / CryptographyReputable Certificate Authority
Certificate issued by a reputable CA
52-113-11-87.relay.teams.microsoft.com 52.113.11.87 :443 + 33 other hosts · 34 of 34 SSL hosts (100%)
+5
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)
52-113-36-78.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.113.36.78 :443 + 3 other hosts · 4 of 34 SSL hosts (12%)
+1
Network SecurityEnterprise Cloud Hosting
Hosted on Azure
52-112-76-216.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.112.76.216
+8
Network SecurityStandard Ports Only
Only standard web ports (80, 443, 8080, 8443) are open
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+7
Network SecurityMinimal Open Ports
Only 1 port(s) open
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+5
Network SecurityNo High-Risk Ports Detected
No high-risk service ports (RDP, Telnet, FTP, etc.) are exposed
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+5
Network SecurityNo Database Ports Exposed
No database ports (MySQL, PostgreSQL, MongoDB, etc.) are exposed
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+5
Application HardeningNo Server Version Disclosure
Server header does not reveal software version
52-113-11-87.relay.teams.microsoft.com 52.113.11.87 + 33 other hosts · 34 of 34 HTTP hosts (100%)
+10
Application HardeningNo Default Pages
No default/welcome pages detected
52-113-11-87.relay.teams.microsoft.com 52.113.11.87 + 33 other hosts · 34 of 34 HTTP hosts (100%)
+5
Application HardeningNo Admin Interfaces Exposed
No exposed admin panels detected
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+8
Vulnerability ExposureNo CVEs Detected
No known vulnerabilities detected across all hosts
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+30
Vulnerability ExposureNo Outdated Software Detected
All detected software versions are within acceptable ranges
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+15
Email SecuritySPF Hard Fail (-all)
SPF record with strict enforcement
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+12
Email SecurityDMARC Reject Policy
DMARC policy set to reject unauthenticated email
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+15
Email SecurityDKIM Record Found
DKIM record found (selector: selector2)
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+10
Email SecurityEnterprise Email Gateway
Email protected by Microsoft EOP
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+10
Email SecurityMTA-STS Present
MTA Strict Transport Security is configured
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+5
Email SecurityManaged DNS Provider
Using Azure DNS
52-113-11-87.relay.teams.microsoft.com 52.113.11.87
+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
443https52-113-11-87.relay.teams.microsoft.com 52.113.11.87
443https52-113-10-245.relay.teams.microsoft.com 52.113.10.245
443https52-113-11-82.relay.teams.microsoft.com 52.113.11.82
443https52-113-11-246.relay.teams.microsoft.com 52.113.11.246
443https52-113-10-118.relay.teams.microsoft.com 52.113.10.118
443https52-113-11-180.relay.teams.microsoft.com 52.113.11.180
443https52-115-240-70.relay.teams.microsoft.com 52.115.240.70
443https52-113-11-223.relay.teams.microsoft.com 52.113.11.223
443https52-113-11-197.relay.teams.microsoft.com 52.113.11.197
443https52-113-11-245.relay.teams.microsoft.com 52.113.11.245
443https52-115-240-46.relay.teams.microsoft.com 52.115.240.46
443Kestrel52-113-36-78.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.113.36.78
443Kestrel52-113-36-58.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.113.36.58
443https52-113-11-89.relay.teams.microsoft.com 52.113.11.89
443https52-113-10-202.relay.teams.microsoft.com 52.113.10.202
443https52-113-11-216.relay.teams.microsoft.com 52.113.11.216
443https52-115-240-78.relay.teams.microsoft.com 52.115.240.78
443https52-115-240-72.relay.teams.microsoft.com 52.115.240.72
443https52-113-11-243.relay.teams.microsoft.com 52.113.11.243
443https52-113-11-253.relay.teams.microsoft.com 52.113.11.253
443https52-113-11-199.relay.teams.microsoft.com 52.113.11.199
443https52-113-11-179.relay.teams.microsoft.com 52.113.11.179
443https52-113-10-192.relay.teams.microsoft.com 52.113.10.192
443https52-113-11-192.relay.teams.microsoft.com 52.113.11.192
443https52-113-11-74.relay.teams.microsoft.com 52.113.11.74
443https52-115-240-170.relay.teams.microsoft.com 52.115.240.170
443https52-115-240-187.relay.teams.microsoft.com 52.115.240.187
443https52-115-240-178.relay.teams.microsoft.com 52.115.240.178
443https52-113-11-129.relay.teams.microsoft.com 52.113.11.129
443https52-113-11-133.relay.teams.microsoft.com 52.113.11.133
443https52-115-240-71.relay.teams.microsoft.com 52.115.240.71
443Kestrel52-113-160-164.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.113.160.164
443Kestrel52-112-76-216.d.ipdns.public-teams.main.ml.teams.microsoft.com 52.112.76.216

Technology Inventory

Microsoft CorporationKestrelMicrosoft ASP.NETAzureMicrosoft EOPAzure DNS

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.