A Google API key vulnerability arises when an API key is exposed publicly (e.g., in code repositories or client-side scripts), allowing unauthorized users to misuse it.br br Impact:br br Unauthorized API Usage: Attackers can access and exploit APIs at the owner's expense.br Quota Exhaustion: Legitimate users are blocked as the usage quota is exceeded.br Data Exposure: Access to sensitive data through APIs like Maps, Drive, or Cloud services.br Financial Loss: Accrued costs from malicious or excessive API calls.br Mitigation: Restrict API keys to specific IPs, referrers, or services, and never expose them in public repositories.