Data breach
Not Acxiom
51 730 831 accounts exposed in a breach dated 2020-06-21.
Breached2020-06-21Added to HIBP2022-11-22 UTCUpdated by HIBP2022-11-22 UTCAccounts51 730 831Domain—
Unverified
What happened in Have I Been Pwned’s words
In 2020, a corpus of data containing almost a quarter of a billion records spanning over 400 different fields was misattributed to database marketing company Acxiom and subsequently circulated within the hacking community. On review, Acxiom concluded that "the claims are indeed false and that the data, which has been readily available across multiple environments, does not come from Acxiom and is in no way the subject of an Acxiom breach". The data contained almost 52M unique email addresses.
Exposed data as HIBP classifies it
- Email addresses
- IP addresses
- Names
- Phone numbers
- Physical addresses
How HIBP qualifies it
- HIBP could not verify that the data came from this service.
HIBP names no domain for this breach.
Source: Have I Been Pwned (CC BY 4.0)
Copied from HIBP 2026-11-05 03:50 UTC