ExternalSight scans your internet-facing domains for exposed assets, misconfigurations, weak security controls, and attacker-visible risks — then turns them into prioritized fixes.
Type any domain. Watch forty-eight scanners resolve in real time, with a deterministic posture score on the other side.
What independent analysts find, repeatedly, when they survey enterprise security in 2024–2025.
"Between 80–95% of a company's assets change each year. Manual tracking is structurally impossible."
"ASM will continue to prevail as a capability in proactive security platforms."
"Organizations using AI and automation in security detect incidents ~100 days faster."
Discovery, exposure, configuration, infrastructure, and active DAST — all feeding into a single posture score.
Continuously enumerate subdomains, fingerprint infrastructure, and monitor certificate transparency logs. Every new asset lands on the map automatically.
Credential leaks, exposed secrets, and cloud misconfigurations detected and prioritized before attackers find them.
Catch TLS weaknesses, missing security headers, CORS misconfigurations, and CSP gaps — before they become incidents.
Detect exposed admin panels and remote access endpoints, fingerprint the tech stack, and confirm WAF coverage.
Active vulnerability testing across your discovered attack surface, running automatically on a cadence you set.
The posture score is computed on each scan from eight category weights. CISOs see the score; engineers drill straight to the failing scanner and its raw evidence.
Continuous re-scans, intelligent diff detection, and routed alerts — so the only people surprised by a new exposure are not on your team.
Structured JSON for engineers. Executive PDF for the board. Same data, two formats, one source of truth.
Pipe straight to your SIEM, ticket system, or remediation workflow.
Board-ready posture summary with quarter-over-quarter trend.
Findings link causally — admin panel + weak TLS + leaked credential = single incident, not three.
Every byte of raw evidence retained, signed, and verifiable on audit.
DNS resolution, TLS handshakes, HTTP inspection, TCP probes — outside-in, exactly what an attacker sees.
Domains, subdomains, public servers.
DNS, TLS, HTTP, TCP probes.
48 concurrent scanners.
Findings ranked by severity, enriched with CVE data, and correlated into chains.
No agents. No sidecars. No integrations. We see exactly what an attacker on the open internet sees.
Every finding ships with raw DNS records, HTTP headers, and certificates — everything is verifiable, nothing taken on faith.
Same target, same result, every time. No randomness. No AI hallucinations. Just protocol-level signal.
Sentinel costs 0.012% of the average data breach. The math is not contested.
For individuals exploring exposure.
Start freeFor teams managing real infrastructure.
Get accessFor teams with large surfaces.
Get accessFor complex global surfaces.
Contact salesStart free, no credit card required. See your first finding in under three minutes.