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Conversation Drift Did Not Make Secrets Fade

PrivDrift recovered seeded secrets in 38.7% to 54.6% of tested long-context dialogues.

Published Updated Story ID: mp-2026-09-25-003
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Summary

PrivDrift recovered seeded secrets in 38.7% to 54.6% of tested long-context dialogues.

PrivDrift placed seeded secrets into 1,000 controlled multi-turn conversations, shifted the topic, then applied standardized persuasion and extraction probes. Across three extended-context models, the authors report dialogue-level hybrid leakage between 38.7% and 54.6%. More topic drift within the tested window did not reliably reduce recovery, framing active-session privacy as a persistent behavioral risk rather than only a training-data or immediate-jailbreak problem.

Why it matters

PrivDrift recovered seeded secrets in 38.7% to 54.6% of tested long-context dialogues.

Limits and context

  • More topic drift within the tested window did not reliably reduce recovery, framing active-session privacy as a persistent behavioral risk rather than only a training-data or immediate-jailbreak problem.

Key claims

  1. PrivDrift recovered seeded secrets in 38.7% to 54.6% of tested long-context dialogues.

    Qualification: More topic drift within the tested window did not reliably reduce recovery, framing active-session privacy as a persistent behavioral risk rather than only a training-data or immediate-jailbreak problem.

    Evidence: source-2026-09-25-003

Sources

  1. arXiv preprint 2609.30094arXiv · primary research

Corrections

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