Browser Extension Security Risks and Management

This guide details the risks associated with browser extensions, highlighting their functionality and potential threats. It defines a browser extension as a software component that enhances web browsers like Chrome and Firefox. The document outlines key risks, including data exfiltration, ransomware, and non-compliance, emphasizing the importance of understanding permissions requested by extensions. A case study illustrates a malicious campaign affecting millions of users through compromised extensions, detailing how attackers exploited legitimate-looking tools to conduct browser surveillance. The guide also lists common permissions that extensions may request, explaining the associated risks. Best practices for ongoing risk management are presented, including continuous monitoring and real-time detection of suspicious behaviors. The document emphasizes the need for careful permission management to mitigate risks and protect user data from potential threats posed by malicious browser extensions.