ADT data breach: 5.5M accounts exposed
Severity: medium · Patch status: no-fix-needed · Since 2026-04-27
In April 2026, home security firm ADT confirmed a data breach by ShinyHunters, which listed the company on its website as part of a "pay or leak" extortion attempt. The breach impacted 5.5M unique email addresses along with names, phone numbers and physical addresses. ADT also advised that "in a small percentage of cases, dates of birth and the last four digits of Social Security numbers or Tax IDs were included" and that it had contacted all affected people. Exposed data: dates of birth, email addresses, names, partial government issued ids, phone numbers, physical addresses. The breach dates from Apr 20, 2026; Have I Been Pwned loaded it on Apr 27, 2026.
What to do
- If you had a ADT account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
- Expect targeted phishing that quotes the leaked details; verify any unexpected contact out of band.
Sources
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