Harvesting personal information, tax documents, or private communications found within the inbox [2, 5]. How These Lists Are Created
These lists are rarely the result of a direct hack on a mail provider like Gmail or Outlook. Instead, they are usually compiled through: 6k usa have mail access.txt
Immediately change passwords for your email and any account that shared that password. Harvesting personal information
Using the same email/password combinations to try and break into other high-value accounts like Amazon, Netflix, or banking portals [1, 2]. or banking portals [1
Taking data from a leaked site (e.g., a gaming forum) and "checking" it against mail providers.
Use services like Have I Been Pwned to see if your email has appeared in recent leaks.