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Free Security Tools

Audit your security posture in seconds.

Three free tools used by the same SentinelEra engineers who build your platform — DMARC + SPF auditor, threat-intel lookup, and Have I Been Pwned domain check. No signup, no credit card.

DMARC + SPF + DKIM auditor

Resolves your domain's TXT records and parses SPF + DMARC + DKIM policies to surface mis-configurations. Pure DNS lookup — no API key required.

Each tool is rate-limited to 10 requests per minute per IP. Results are cached for 24 hours to keep the upstream feeds (VirusTotal, AbuseIPDB, Shodan, HIBP) within their free-tier quotas.