ResearchMCPShield Plug-in Security Layer Raises Defense 10 to 95 PercentarXiv·high signalXBlueskyLinkedInCopy linkUndefended MCP agents achieve 10% defense rate. MCPShield adds pre-invocation probing, runtime isolation, post-invocation trace reasoning to reach 95%.SourceSource pagearXiv↳ Follow the threadShared entity / Policy dependencyMicrosoft Agent Framework dotnet-1.21.0 lands four breaking changes at once, including limiting MCP skill archives to ZIPGitHubPolicy dependency / Stack layerSeqMoE Reaches 80.22% of Full-Load MoE Performance With Only 45% of Experts Resident in Device MemoryarXiv 2609.12978Stack layer / Threat patternA Malicious Super-App Can Silently Own Every Mini-App Inside It, and Russia's MAX Demonstrates the Full SetarXiv 2609.11814Policy dependency / Stack layerRIPPLE: an edit confined to one prompt-policy segment changes downstream behavior, so replay candidate edits after previously accepted ones before persistingarXiv 2609.12127Stack layer / Threat patternA Jailbreak SoK Finds Low Final-Response Attack Success Hides Compromised Planning, Memory, and Tool StatearXiv 2609.12413Policy dependency / Stack layerAn audit of a production agent pipeline found a reported p99 latency of 2,147,483,647 ms, the signed 32-bit maximum, from a lifecycle clamparXiv 2609.12017Policy dependency / Stack layerMOSAIC Picks a GraphRAG Traversal Policy per Query and Beats the Best Fixed Policy by 9.96 PointsarXiv 2609.11065Stack layer / Threat patternTwo-gap framework recasts reward hacking and hallucination as symptoms of requirement and model gapsarXiv