Data breaches in 2025
51 known data breaches are dated 2025, together exposing around 2.8 billion accounts — the biggest being Synthient Credential Stuffing Threat Data. Browse them below to see what was leaked, or check your own email in seconds.
Check if my email was exposed — free →Every 2025 data breach we track
Were you caught up in a 2025 breach?
Check your email against known breach and dark-web databases for free — then we’ll help you remove exposed data and watch for new leaks.
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2025 data breaches, answered
How many data breaches were there in 2025?
We track 51 known, verified data breaches dated 2025, together exposing around 2.8 billion accounts. The largest was Synthient Credential Stuffing Threat Data (2 billion accounts).
Was my email exposed in a 2025 breach?
Check your email free against known breach and dark-web databases — it tells you which breaches, including any from 2025, include your address and what was exposed.