Inside the Synthient Threat Data

Synthient aggregated a massive corpus of stolen credentials—approximately 3.5 TB and 23 billion rows including 183 million email addresses and millions of previously unseen entries—comprised of stealer logs (captured by infostealer malware) and credential-stuffing lists; Have I Been Pwned validated a large portion of the data with subscribers and has ingested the stealer logs into searchable HIBP and Pwned Passwords, while credential-stuffing data will be loaded after further validation, representing a high-risk source of account takeover and subsequent breaches.