Password reuse and Snowflake
Mandiant stated that the attackers mostly obtained credentials through password reuse or through users downloading trojanized software. Google Cloud (Mandiant)
Automatically trying username and password pairs leaked from one place on the same person’s accounts in other services.
The attack relies on password reuse: if the user uses the same password in more than one place, one leak opens the other accounts too. OWASP
It differs from password guessing; every pair tried belongs to a real person. This is why the success rate is much higher than a brute-force attack. MITRE ATT&CK
Username–password pairs are taken from leak and log lists.
Checker tools try the list on the target site through proxies. OWASP
Opened accounts are sold or used directly for fraud. MITRE ATT&CK
Mandiant stated that the attackers mostly obtained credentials through password reuse or through users downloading trojanized software. Google Cloud (Mandiant)
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