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Microsoft Defender XDR Queries Can Miss Public Connections Logged as FourToSixMapping
Microsoft Defender XDR detection rules can miss public network connections when they filter the DeviceNetworkEvents table only for RemoteIPType == "Public". Some IPv4 connections made through IPv6-capable sockets appear under the separate FourToSixMapping classification. The connection events remain available in Defender XDR.
How a single page can RCE the host running your AI agent
Ongoing research into AI agent framework security identified an exploit chain in AutoGen Studio (AutoGen’s open-source prototyping user interface) that allows untrusted web content rendered by a browsing agent to reach a local Model Context Protocol (MCP) WebSocket and spawn arbitrary processes on the host. The technique, which we call AutoJack, jacks the agent into becoming the attacker’s last-mile delivery vehicle by crossing the localhost trust boundary that many developer tools rely on.
Inside the Mastra npm supply chain compromise
From package to postinstall payload: Inside the Mastra npm supply chain compromise Microsoft Threat Intelligence observed a large-scale npm supply chain attack affecting 140+ pac 2026-6-18 03:43:4 Author: www.microsoft.com(查看原文) 阅读量:0 收藏 Microsoft Threat Intelligence observed a large-scale npm supply chain attack affecting 140+ packages across the mastra and @mastra scopes on the npm registry.
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