Deep SecurityDeep Security
FREE SECURITY UTILITIES

Investigate one signal or run the full picture.

Start with a focused check. Expand into a complete reconnaissance report when you need connected evidence and prioritized action.

FREE TOOLDMARC checker

Inspect DMARC enforcement, reporting addresses, and configuration gaps.

FREE TOOLSPF record checker

Find SPF records, mechanisms, lookup pressure, and policy strength.

FREE TOOLDKIM checker

Review discoverable DKIM selectors and understand missing records.

FREE TOOLMX lookup

Resolve mail exchangers, priorities, providers, and supporting DNS.

FREE TOOLDNS infrastructure map

Visualize A, AAAA, CNAME, MX, NS, IP, ASN, and hosting relationships.

FREE TOOLSSL certificate checker

Check trust, names, validity dates, issuers, and expiration risk.

FREE TOOLEmail header analyzer

Inspect hops, timestamps, TLS, SPF, DKIM, DMARC, and routing.

FREE TOOLSpam routing analyzer

Evaluate authentication, alignment, routing, content, and header characteristics.

FREE TOOLDomain age checker

Inspect creation, update, expiration, registrar, status, and WHOIS context.

FREE TOOLSubdomain finder

Combine certificate transparency and bounded DNS discovery.

FREE TOOLSecurity header checker

Check HSTS, CSP, framing, referrer, permissions, cookies, CORS, and redirects.

FREE TOOLIP reputation checker

Review geolocation, ASN, proxy, VPN, Tor, abuse, and threat signals.

Solutions by customer type

Continue beyond one scan

Need the complete view?

Full assessments connect DNS, mail, web, network, certificates, reputation, exposure, and company signals.

View Sample Report