Data leaks
Checking whether addresses are affected, and what to do next.
- Catch-All Email Address: Your Domain as a Leak Detector
A catch-all email address on your own domain gives every service its own address, so leaks show up instantly. With a Postfix example and 3 spam rules.
- Check If Your Email Was in a Data Breach (and What Hits Mean)
Check if your email was in a data breach with services like Have I Been Pwned or HPI's Identity Leak Checker, what a hit means, and how to test passwords safely.
- Email in Data Breach: What to Do in the First Hour
Email in data breach, what to do: the right order for password changes, 2FA, signing out other sessions and checking forwarding rules, as a 60-minute checklist.