OTASEC Daily Briefing | 26-10-2026

1Update: Waterfall on PHP2Shell and AI-driven exploitation of old vulnerabilities

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Waterfall Security discusses PHP2Shell as an example of frontier AI turning long-known, hard-to-exploit vulnerabilities into real attacks. Andrew Ginter sets out what AI can and cannot do for attackers. His conclusion is that OT defenders should engineer attack paths away.

For asset owners: Do not assume an old, hard-to-exploit vulnerability is low risk: review which attack paths into your OT can be removed through network design, alongside patching.