Rezilion

Rezilion is an Israeli vulnerability-management vendor, founded in 2018 by Liran Tancman and Shlomi Boutnaru (previously founders of CyActive, acquired by PayPal) and headquartered in Be’er Sheva. Its core pitch is reducing the volume of vulnerabilities security teams must triage by determining which detected CVEs are actually reachable and executed at runtime, rather than scoring every finding by static CVSS severity alone. The company calls its asset inventory a ‘Dynamic SBOM’ — a software bill of materials that reflects what is actually loaded and running in an environment, not just what is statically present in a container image or manifest.

In June 2023 the company released an agentless runtime-monitoring capability, extending a prior agent-based approach, to reduce the operational overhead of continuous monitoring. The platform integrates with ticketing and workflow tools such as Jira and ServiceNow so that prioritized findings route directly into existing remediation processes. Rezilion markets claims that its approach lets teams de-prioritize the large majority of flagged vulnerabilities as non-exploitable in a given environment; these are vendor-stated efficiency figures, not independently measured.

Rezilion raised a $30 million Series A in 2021 led by Guggenheim Partners-affiliated investors, bringing disclosed total funding to roughly $38 million; no newer funding round was found in this research, and headcount estimates are inconsistent across sources (roughly 50-150 employees). This is a real, currently operating company with a technically credible approach, but publicly available evidence of fast-growing adoption or named enterprise case studies is limited.