Intelligence
What is Stealer log?
The bundle of passwords, cookies and machine details taken off one infected computer and sold or traded in batches.
A stealer log is the bundle of data an infostealer takes from one infected computer: saved browser passwords, cookies, autofill data, crypto wallet files, system details and sometimes screenshots. Logs are sold individually or in bulk on markets and Telegram channels.
Stolen session cookies are the most dangerous part, because they can let a buyer skip the password and any multi-factor prompt. Many large breaches have started with a single employee's stealer log.