What was exposed, when it happened, and which databases confirm it.
- accounts
- 5,488,888
- Breached
- April 20, 2026
- Last Update
- April 27, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
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.
Compromised Info
- Dates of birth
- Email addresses
- Names
- Partial government issued IDs
- Phone numbers
- Physical addresses
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
- LeakCheck— linked via automatic string matching
- HIBP
FAQ
What was leaked in the ADT breach?
The ADT breach exposed: Dates of birth, Email addresses, Names, Partial government issued IDs, Phone numbers, and Physical addresses.
When did the ADT breach happen?
The ADT breach was disclosed on April 20, 2026 and affected 5,488,888 records.
Am I affected by the ADT breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the ADT leak.