Seal Security

Seal Security addresses a specific, well-known pain point in open source vulnerability remediation: scanners like Snyk or Mend can tell a team a dependency has a critical CVE, but fixing it often means a major-version upgrade that risks breaking changes, forcing security and engineering teams into a tradeoff between staying vulnerable and taking on regression risk. Seal’s platform generates standalone, backported patches, drop-in replacements built from the same dependency version with just the fix applied, so teams can remediate a CVE without the surrounding API or behavior changes of a full version bump.

Founded in 2022 in Tel Aviv by CEO Itamar Sher, CTO Lev Pachmanov, and CPO Alon Navon, all veterans of Israel’s Unit 8200 intelligence unit, Seal Security raised a $7.4 million seed round in early 2024 led by Vertex Ventures Israel, followed by a $13 million Series A in mid-2025, also led by Vertex, bringing total funding to roughly $20 million. The company has built a formal integration with Snyk through Snyk’s Technology Alliance Partner Program, where remediated vulnerabilities are marked “Fixed by Seal Security” directly inside Snyk’s reporting, and lists a 72-hour remediation SLA for critical and high-severity findings.

The Snyk integration is independently verifiable (it is listed in Snyk’s own partner directory) and gives Seal real distribution leverage as a remediation layer that plugs into an already widely-deployed scanner, rather than requiring customers to replace their existing SCA tooling.