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Thu, September 18, 2025

Palo Alto Acknowledges Browser-Malware Risks, Validates LMR

🔍 SquareX’s Last Mile Reassembly (LMR) research, disclosed at DEF CON 32, shows how attackers split and reassemble malware inside the browser to evade Secure Web Gateways (SWGs). Palo Alto Networks has become the first major SASE vendor to publicly acknowledge this class of browser-assembled evasive attacks and announced enhancements to Prisma Browser. SquareX says LMR and related Data Splicing techniques exploit channels like WebRTC and gRPC, bypassing traditional SWG and DLP controls and underscoring the need for browser-native security.

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