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An info-stealer is a type of malware designed to silently harvest data from an infected computer: saved passwords, browser cookies, autofill data, cryptocurrency wallets, and system information.

It's usually delivered through cracked software, fake installers, or malicious email attachments. Once running, it collects everything it can find and sends it back to whoever controls it — often bundled into a "log" alongside thousands of other victims.

Most victims never notice anything unusual: info-stealers are built to run once, exfiltrate data, and disappear without a trace.

The only reliable signal is finding your own credentials in a leaked dataset — which is exactly what the lookup on this site checks, without ever storing or exposing your real email or password.

Enable two-factor authentication on every account that supports it, so a stolen password alone isn't enough to get in.

Use a password manager instead of your browser's built-in save-password feature, and never reuse the same password across services.

Only install software from official sources, and keep your OS, browser, and antivirus up to date.

Treat every saved password as potentially exposed eventually, and rotate the important ones (email, banking, primary accounts) periodically.

Use passkeys where available — they can't be phished or stolen the way a typed password can.

Check back here periodically: new stealer logs get processed regularly, and an account that's clean today may not stay that way.