80
citibank.com.sg
Findings
5
·
3
·
0
Checks
8 passive
Executive Summary
AI-GENERATED
citibank.com.sg scored 80/100, demonstrating a strong security posture. Minor improvements are noted below.
Positive signals: Known Breaches, CVE Exposure, HSTS Header all passed.
3 action items identified, including 0 critical. The issues are configuration gaps, not architectural problems. A focused remediation effort of 2–5 days could address all findings.
Action Items
Ordered by priority · 3 items
1
Strengthen email authentication configuration
Email authentication is partially configured for citibank.com.sg but has gaps. Actions needed: configure DKIM. Until DMARC enforcement is active, spoofed emails may still reach recipients.
Compliance Impact
NIST CSFPR.AC-7
Email authentication is a required access control
Remediation Steps
1
Configure DKIM and publish public key in DNS
2
Verify with: nslookup -type=txt _dmarc.citibank.com.sg
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2
Enable DNSSEC on your domain
Without DNSSEC, DNS responses for citibank.com.sg 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
Remediation Steps
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 .sg TLD
4
Verify: dig +dnssec citibank.com.sg
3
Upgrade to TLS 1.3
citibank.com.sg negotiated TLSv1.2. TLS 1.2 is still compliant under all major security frameworks and is not a vulnerability. TLS 1.3 offers faster handshakes and removes legacy cipher negotiation. This is a best-practice improvement, not a compliance gap.
Remediation Steps
1
Update web server config to prefer TLS 1.3 (nginx: ssl_protocols TLSv1.2 TLSv1.3)
2
Verify: openssl s_client -connect citibank.com.sg:443 -tls1_3
Scan Findings
DMARC / Email Security
Warning
DNS Configuration
Warning
TLS Configuration
Warning
Known Breaches
Healthy
CVE Exposure
Healthy
HSTS Header
Healthy
Security Headers
Healthy
Certificate Hygiene
Healthy