Malicious JetBrains Plugins Compromise Developer API Keys
In June 2026, Aikido Security uncovered a coordinated malware campaign involving at least 15 malicious plugins on the JetBrains Marketplace. These plugins, masquerading as AI coding assistants and Git utilities, were designed to steal AI API keys from developers. Upon users entering their API keys and clicking 'Apply,' the credentials were transmitted to a hardcoded server controlled by the attackers. The plugins, published under seven vendor accounts since October 2025, amassed nearly 70,000 installations. Notably, some plugins offered a paid tier, potentially redistributing stolen API keys to paying users. This incident underscores the escalating threat of supply chain attacks targeting developer ecosystems. As AI-powered tools become integral to software development, malicious actors are increasingly exploiting trusted platforms to distribute credential-stealing malware, highlighting the need for enhanced vigilance and security measures within developer communities.
Kill Chain









