NewsMicrosoft GRP-Obliteration Breaks Safety Across 15 LLMsMicrosoft Security Blog·high signalXBlueskyLinkedInCopy linkSingle prompt jailbreak unaligns 15 models across 6 families. GPT-OSS-20B attack success from 13% to 93%. Also breaks diffusion models.SourceSource pageMicrosoft Security Blog↳ Follow the threadPolicy dependency / Stack layerwebmcp-stack Generates Agent Tool Surfaces From an OpenAPI Spec So the Safety Decisions Survive Regenerationwebmcp-stack, via Hacker News Show HN (single source)Stack layer / Threat patternDeleting an agent's memory record changes leakage not at all, and instruction-based forgetting fails on every probearXiv 2609.04875Stack layer / Threat pattern19,325 CVEs compiled into 1,033 detection rules packaged as 172 agent skills, producing runtime evidence for 644 findingsarXiv 2609.05335Stack layer / ContrastRefactorPlatform: AST-aware chunking beats token-window chunking by 25-30%, and naive retrieval is worse than no retrievalarXivStack layer / ContrastGitHub Ships HydraFusion, a Copilot CLI Mode That Routes Between Opus 5 and GPT-5.6 Sol Per TaskGitHub Blog / Hacker NewsPolicy dependency / Threat patternCONTINUITY names "security-context discontinuity" as the failure mode where individually correct agent security controls compose into an insecure systemarXivPolicy dependency / Stack layerA Decades-Old Sparse-Approximation Algorithm Matches Every Purpose-Built Long-Video Frame SelectorarXiv 2609.03820Policy dependency / Stack layerAI Toolbox 3.0 Wins Product Hunt by Selling the Cross-Model Chat Archive That No Model Vendor Will BuildProduct Hunt (corroborated by promptowy.com and the maker's X post)