Outlook and Hotmail breach checker: is your address exposed?
2 min read · Updated November 8, 2026
Outlook, Hotmail and Live addresses show up in breach records mainly because people used them to register on other websites. Check your address, then secure your Microsoft account with a unique password, two-step verification and a review of recent sign-in activity.
Why Microsoft addresses appear in breaches
These addresses have been used for years across countless sites. When one of those sites is breached, the Outlook or Hotmail address in its customer list is included. The leak happens at the third-party service, not necessarily at Microsoft.
How to check your address
- ✓Enter the full address, whether it ends in outlook.com, hotmail.com or live.com.
- ✓Check older addresses and aliases linked to the same account.
- ✓Read the matched breaches and the data types exposed.
Check your email address for known leaks
Works with any provider. Enter your address, get a full exposure report for a one-time $1.99, and see what to fix first.
How to secure your Microsoft account
- ✓Use a unique password and change it if it matches any leaked one.
- ✓Turn on two-step verification, or sign in with a passkey.
- ✓Review the recent activity page and sign out unfamiliar sessions.
- ✓Update security info, such as recovery email and phone number.
Check your mailbox rules
Attackers sometimes add rules that forward or hide messages. Open your mailbox settings, review rules and forwarding, and remove anything you did not create.
Frequently asked questions
Does a match mean someone can read my mail?+
Not by itself. It depends on whether a password was exposed and reused. Change the password and enable two-step verification to be safe.
Do Hotmail and Live addresses need separate checks?+
Yes, if you own more than one address or alias, check each one.
What if I cannot sign in anymore?+
Use Microsoft’s account recovery and then review security info and mailbox rules once you are back in.
Stop guessing. Check your email in seconds.
The Leakill scan looks for your email address in known breach records and delivers a detailed report: the incidents, dates, sources, the kinds of data involved and practical next steps. It is a one-time $1.99 payment, not a subscription.
A breach match is a warning signal, not proof that someone has access to your account today. No public database covers every breach, so a clean result lowers risk without guaranteeing safety.