Use services like Have I Been Pwned to see if your email has been part of a known breach.
Activate Multi-Factor Authentication (MFA) on all possible accounts to prevent access even if your password is known. 300k UHQ.txt
These lists are often compiled from multiple data breaches or via "stealer" malware. Use services like Have I Been Pwned to
Files shared on public "leaks" forums often contain hidden malware or scripts designed to infect the downloader's system. 300k UHQ.txt