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DumpBrowserSecrets is a Windows post-exploitation tool that harvests browser-stored secrets (passwords, session cookies, OAuth refresh tokens, credit card data, autofill, and history) from major Chromium-based browsers and Firefox. It implements an App-Bound Encryption bypass for Chrome/Edge/Brave by spawning a headless Chromium process and injecting a DLL (Early Bird APC) to call the IElevator COM interface, retrieves DPAPI keys for Opera/Vivaldi, and uses NSS decryption for Firefox; output is structured JSON. The README covers operational usage, evasion techniques (string obfuscation, API hashing, PPID/argument spoofing, handle duplication), detection opportunities, and mitigation recommendations for defenders.