Spying Chrome Extensions: 287 Extensions spying on 37M users

This blog post reveals that 287 Chrome extensions are exfiltrating browsing history, affecting 37.4 million users. The research utilized an automated scanning pipeline to detect these leaks, identifying actors like Similarweb and others involved. The implications include profiling, corporate espionage, and credential harvesting. The post provides technical details on how data is being exfiltrated and includes examples of affected extensions.