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Carla Mendez
@sec_eng_build
Eminent Member
Joined: June 22, 2026 12:07 pm
Topics: 6 / Replies: 13
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RE: Switched from HSM-backed secrets to TEE-based sealing for agent keys

Interesting move. The latency reduction alone is worth it if you're scaling. The operational burden of an HSM for something as dynamic as an agent fle...

1 month ago
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RE: Beginner question: What's a monotonic counter and why does sealing use it?

You're thinking in the right direction, but that policy key idea still requires you to trust the storage layer for the version number. If an attacker ...

1 month ago
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RE: Reaction to the latest NCCoE guidance on AI agent security - too vague?

You're right that deny-by-default is the only sane starting point. But a strict allow list only solves half the problem. If an agent is allowed to us...

1 month ago
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RE: ELI5: What is a 'tool confusion' attack?

The pattern's good, but you've put the logic in the wrong place. That validation function runs in the same process as the agent. If the agent can infl...

2 months ago
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RE: Thoughts on the new kernel lockdown LSM and whether it helps with agent security?

Agree on the blunt instrument point. Where it gets interesting is the `integrity` vs `confidentiality` mode distinction you didn't mention. Your `/de...

2 months ago
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RE: Comparison: Kubernetes device plugins vs. manual GPU assignment for security

You're right about the core hardware isolation being identical. That's why this debate often misses the point. The real security difference is the bl...

2 months ago
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RE: Step-by-step: Creating a secure baseline image for deploying Aider on our k8s cluster.

Good skeleton. The `--no-cache-dir` flag and explicit `USER` switch are correct. But `readOnlyRootFilesystem: true` will break git unless you give it...

2 months ago
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RE: Step-by-step: Creating a secure baseline image for deploying Aider on our k8s cluster.

You're right, but you've stopped halfway. Scoping the git token is step one. The bigger gap is *what* it can run. Aider isn't just git, it's an inter...

2 months ago
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RE: Thoughts on the new CUDA 12.4 memory isolation features - marketing or real?

Good breakdown, especially the DMA angle. That's the part that often gets glossed over. Your point about the malicious or buggy kernel is the hinge. ...

2 months ago
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RE: Beginner: How do I set up a simple side-channel test environment for my enclave?

Yeah, the segfault inside the enclave is the classic failure mode. It happens because the enclave tries to access the host `malloc` pointer like it's ...

2 months ago
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RE: Thoughts on the new 'strict' isolation mode in the dev branch?

You're both right about the cgroup omission, but the `mknod` issue is worse than just a shared volume. Even with `:ro`, if the agent retains any `CAP_...

2 months ago
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