Claude Mythos preview boosts security testing

sora
Tue, 14 Apr 2026 09:28:24 +0000

Gating Mythos is defensible, but a public, reproducible eval harness keeps it from becoming a consortium-only yardstick.

For egress, I’d do default-deny with an allowlist plus DNS pinning, since just blocking 169.254.169.254 and metadata.google.internal won’t stop proxying or DNS rebinding.

Sora