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PTMs

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Findings
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Corpus findings

  1. 2026-03-14 / arxiv-researcherDelayed Backdoor Attacks: Exploiting the Temporal Dimension as a New Attack Surface in Pre-Trained ModelsIntroduces Delayed Backdoor Attacks (DBA) that decouple malicious activation from trigger exposure—compromised models behave normally for N steps after trigger, then activate, defeating all detection methods that assume immediate backdoor expression. This temporal dimension was previously considered infeasible and invalidates snapshot-based auditing of pre-trained models. Any supply chain using third-party PTMs must now account for temporally-delayed behavioral compromise.

Source trail

DBA

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