ptrace(PTRACE_ATTACH) is blocked via two layers: prctl(PR_SET_DUMPABLE, 0) marks CE as non-dumpable (prevents ptrace from other processes), and the Yama Linux Security Module enforces ptrace scope = 1 (only parent can ptrace children, and CE has no accessible parent). You cannot attach a debugger to CE from any other process. /proc/CE_PID/mem is read-protected. This is standard for production security-sensitive processes and has been since the introduction of Yama in Linux 3.5.

CE runs on a seL4 microkernel deployment. Every memory access in seL4 requires a cryptographic capability — an unforgeable object representing the right to access a specific memory region. CE's code pages are mapped as READ-EXECUTE only (via capability type restriction). No process — not even root — can obtain a WRITE capability for CE's code pages without going through seL4's capability management, which CE's own authority domain controls. You'd need kernel-level privilege to create new capabilities, and the seL4 kernel itself is formally verified to prevent privilege escalation.

Even if you somehow patched CE's memory (you can't), remote attestation would detect the modification within 100ms. CE runs a continuous integrity check: TPM-backed measurement of all executable pages, verified against the expected hash stored in the hardware TPM. Any modification to executable pages changes the measurement. The attestation service detects the mismatch, terminates the compromised pod immediately, and spins up a fresh unmodified instance. The compromised pod's session tokens are all invalidated. You'd have 100ms with a patched binary before it's killed and replaced.