Astelia

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Astelia is an AI native exposure management platform founded by the leaders of Israel's National Red Team, the unit that stress tests the country's critical infrastructure defenses. It launched in February 2026 with thirty five million dollars in combined seed and Series A funding led by Index Ventures and Team8, having already signed dozens of customers including Fortune 500 organizations in roughly a year. The founders' conviction, drawn from years on both offensive and defensive sides, is that most vulnerabilities defenders worry about are irrelevant to how attacks actually work, and that security teams need to see their environment the way an attacker does, not the way a scanner does. Security teams face an average of one hundred thirty five new vulnerabilities a day, and a quarter of breaches happen within twenty four hours of disclosure, yet existing tools force triage of massive backlogs with little proof of what is actually exploitable. Astelia combines deep analysis of each enterprise's real environment with agentic AI: it maps network topology, segmentation, and existing controls from the inside out, while autonomous AI agents trained by nation state level vulnerability research experts analyze the technical prerequisites required to exploit each vulnerability. By correlating exploitability with real world reachability and attack paths, and visualizing those paths with graph based, evidence driven representations that show exactly how an attacker could traverse the network, Astelia surfaces the small fraction of vulnerabilities, often around two percent, that represent true exposure. In one deployment, out of nearly three million vulnerabilities only about thirty were genuinely exploitable. It then delivers environment specific remediation guidance that goes beyond patching, reducing exposure without forcing unnecessary production patches and aligning security and IT teams around provable reachability rather than abstract risk scores. Astelia fits enterprise and Fortune 500 security teams drowning in vulnerability backlogs who want to move from assumed risk to provable exposure. It is a weaker fit for buyers wanting published pricing, and it is a natural comparison against other agentic exposure management entrants.