Overview
Findings
Actions
Details
Related
AI-Generated Summary
What this means
login.microsoftonline.com scored 72/100, meeting baseline requirements but with 4 findings that require attention. The vendor can proceed with a remediation timeline agreement.
Critical gaps in: Security Headers, DMARC / Email Security. Positive signals: MX Records & Mail Provider, TLS Configuration, TLS Protocol Support all passed.
3 action items identified, including 1 critical. The issues are configuration gaps, not architectural problems. A focused remediation effort of 2–5 days could address all findings.
How login.microsoftonline.com compares
Grade distribution across 2378 companies we've scanned. login.microsoftonline.com scores better than 47% of them.
71
A+
22
A
180
A-
181
B+
69
B
333
B-
111
C+
111
C
295
C-
110
D+
92
D
216
D-
587
F
login.microsoftonline.com — Grade C- (72/100)
2378 companies scanned
Security checks
Each check inspects a different part of login.microsoftonline.com's public security setup. Green means healthy, yellow needs attention, red is a problem.
DMARC / Email Security
Issues: No DMARC record found — email spoofing is not prevented; No SPF record found; No DKIM records found for common selectors (domain may use custom selectors — this is not a confirmed gap).
Security Headers
2/5 security headers present. Missing: CSP, Referrer-Policy, Permissions-Policy. This exposes the application to clickjacking, MIME-sniffing, and other client-side attacks.
MTA-STS & TLS Reporting
Issues: No MTA-STS configured — email in transit is vulnerable to TLS downgrade attacks. Sending servers cannot verify that your mail server requires TLS; No TLSRPT record — TLS delivery failures won't be reported to domain owner.
DNS CAA Records
No CAA records found. Without CAA, any Certificate Authority can issue certificates for this domain. Adding CAA records restricts issuance to authorized CAs only, reducing the risk of misissued certificates.
DNS Configuration
Issues: No NS records found (unusual); DNSSEC not configured — DNS responses can be spoofed.
security.txt (RFC 9116)
No security.txt found. Publishing a security.txt at /.well-known/security.txt is the industry standard (RFC 9116) for vulnerability disclosure policies. Its absence may indicate a less mature security program.
MX Records & Mail Provider
No MX records found. This domain does not receive email directly — this is intentional for many domains and carries no security risk. If email is expected, verify mail routing via A/AAAA fallback or a mail provider.
TLS Configuration
TLSv1.3 negotiated with TLS_AES_256_GCM_SHA384 (256-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
Known Breaches
No known breaches found in public disclosure databases.
TLS Protocol Support
Strengths: TLS 1.3 supported; TLS 1.2 supported; TLS 1.3 supported (strongest). Protocol support: TLS 1.3: Yes, TLS 1.2: Yes, TLS 1.1: No, TLS 1.0: No.
HSTS Header
HSTS enabled: max-age=31536000s (365 days). includeSubDomains present. Missing preload directive.
Cookie Security
Strengths: 5 cookie(s) analyzed; All cookies have Secure flag; All cookies have HttpOnly flag; All cookies have SameSite attribute.
CVE Exposure
No server software versions detected in HTTP response headers. This is good practice (version hiding) but means CVE exposure cannot be assessed from external signals alone.
Certificate Hygiene
Strengths: Certificate valid, 153 days remaining; Issued by Microsoft Corporation; 3196 certificates logged in CT; Certificates from 6 CAs: "VeriSign, DigiCert Inc, GlobalSign nv-sa.
Recommended actions
3 items
Steps to improve login.microsoftonline.com's security grade, ranked by impact.
1
Set up email authentication (DMARC, SPF, DKIM)
Without email authentication, anyone can send emails that appear to come from login.microsoftonline.com. This is the most common vector for phishing attacks targeting employees and customers. DMARC, SPF, DKIM are not configured.
Compliance impact
NIST CSFPR.AC-7
Email authentication is a required access control
ISO 27001A.13.2.1
Information transfer policies require email security controls
HIPAA§164.312(e)
Transmission security for electronic PHI
How to fix this
1
Add SPF record to DNS: v=spf1 include:_spf.google.com ~all (adjust for your email provider)
2
Configure DKIM signing with your email provider and publish the public key in DNS
3
Add DMARC record: v=DMARC1; p=quarantine; rua=mailto:[email protected]
4
Monitor DMARC reports for 2–4 weeks, then upgrade policy to p=reject
See all recommendations
Enter your work email to unlock the full action plan.
No spam. We only send security-related updates.
Report unlocked.
2
Add missing security headers (CSP, Referrer-Policy, Permissions-Policy)
3 of 5 recommended security headers are missing on login.microsoftonline.com: CSP, Referrer-Policy, Permissions-Policy. These headers protect against clickjacking, MIME-sniffing, and unauthorized browser feature access. Adding them is a server configuration change with no application code changes required.
Compliance impact
PCI-DSS 4.0Req 6.4.1
Security headers are required application controls
OWASPSecure Headers
Recommended baseline for web applications
How to fix this
1
Add a Content-Security-Policy header. Safe starting value (works with Google Fonts and inline styles/scripts): default-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; script-src 'self' 'unsafe-inline'; upgrade-insecure-requests. Test your site after adding it, then tighten over time by removing 'unsafe-inline'.
2
Add: Referrer-Policy: strict-origin-when-cross-origin
3
Add: Permissions-Policy: camera=(), microphone=(), geolocation=()
4
Verify with: curl -sI https://login.microsoftonline.com | grep -iE 'content-security|x-frame|x-content|referrer|permissions'
3
Enable DNSSEC on your domain
Without DNSSEC, DNS responses for login.microsoftonline.com can be spoofed, potentially redirecting users to malicious sites. This requires coordination with your domain registrar to publish DS records.
Compliance impact
NIST 800-53SC-20
Secure name/address resolution service
How to fix this
1
Check if your DNS provider supports DNSSEC (Cloudflare, Route53, etc.)
2
Enable DNSSEC signing in your DNS provider dashboard
3
Add the DS record to your registrar for .com TLD
4
Verify: dig +dnssec login.microsoftonline.com
At a glance
Key data points from the scan.
TLS Version
TLSv1.3
TLSv1.3 negotiated with TLS_AES_256_GCM_SHA384 (256-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
DMARC Policy
Not configured
Issues: No DMARC record found — email spoofing is not prevented; No SPF record found; No DKIM records found for common selectors (domain may use custom selectors — this is not a confirmed gap).
SPF Record
Missing
No SPF record found.
Security Headers
2/5 present
Missing: CSP, Referrer-Policy, Permissions-Policy
HSTS
Enabled
HSTS enabled: max-age=31536000s (365 days). includeSubDomains present. Missing preload directive.
SSL Certificate
Valid
Strengths: Certificate valid, 153 days remaining; Issued by Microsoft Corporation; 3196 certificates logged in CT; Certificates from 6 CAs: "VeriSign, DigiCert Inc, GlobalSign nv-sa.
DNSSEC
Not enabled
Issues: No NS records found (unusual); DNSSEC not configured — DNS responses can be spoofed.