Have I Been Pwned
WorkingFree
Check whether an email or phone appeared in known breaches; no leaked data shown.
Breach & Leak Checks
8 OSINT tools and guides. Use them lawfully and ethically.
Breach checks (3)
Have I Been Zuckered
WorkingFree
Checks whether a phone number appears in the 2021 Facebook data breach and is tied to a profile.
Firefox Monitor / Mozilla Monitor
May be blockedFreeLogin required
Mozilla's breach alert service built on HIBP data.
Password checks (2)
Google Password Checkup
WorkingFreeLogin required
Checks saved passwords against known breaches.
Pwned Passwords
WorkingFree
Check if a password appears in breach corpora using k-anonymity.
Official breach lists (3)
California AG Data Breach list
WorkingFree
Official list of breaches reported to the California AG.
Data Breach notices (Maine AG)
WorkingFree
Official list of breach notifications filed with the Maine Attorney General.
HHS OCR Breach Portal
WorkingFree
Official US list of health data breaches affecting 500+ people.