Breach registry
SynthientStealerLogThreatData Data Breach
Synthient Stealer Log Threat Data
What was exposed, when it happened, and which databases confirm it.
- accounts
- 182,962,095
- Breached
- April 11, 2025
- Last Update
- October 21, 2025
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
During 2025, Synthient aggregated billions of records of "threat data" from various internet sources. The data contained 183M unique email addresses alongside the websites they were entered into and the passwords used. After normalising and deduplicating the data, 183 million unique email addresses remained, each linked to the website where the credentials were captured, and the password used. This dataset is now searchable in HIBP by email address, password, domain, and the site on which the credentials were entered.
Compromised Info
- Email addresses
- Passwords
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- HIBP
FAQ
What was leaked in the SynthientStealerLogThreatData breach?
The SynthientStealerLogThreatData breach exposed: Email addresses and Passwords.
When did the SynthientStealerLogThreatData breach happen?
The SynthientStealerLogThreatData breach was disclosed on April 11, 2025 and affected 182,962,095 records.
Am I affected by the SynthientStealerLogThreatData breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the SynthientStealerLogThreatData leak.