ADT
MEDIUM RISKData breach — April 2026
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.
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What happened in the ADT data breach?
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.
The exposed data included 6 types of personal information. Learn more about what a data breach means for you.
Quick answer — was ADT hacked?
Yes. ADT was breached in April 2026. The breach exposed 5,488,888 records including dates of birth, email addresses, names. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the ADT breach so dangerous?
The ADT breach exposed 5,488,888 records — that is 5.5M people whose personal data is now circulating on the dark web. The combination of dates of birth, email addresses, names makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the ADT breach?
Dates of birth — used to verify identity for account takeover and fraud
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Partial government issued IDs — enables full identity theft including fraudulent credit applications
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Is the ADT breach still dangerous in 2026?
Yes. Stolen data from the ADT breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2026 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your ADT password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the ADT breach
Approximately 5,488,888 user records were exposed in the ADT breach in April 2026.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your ADT password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full ADT dataset and tell you instantly whether your email was exposed and what data was taken.
Change your ADT password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
How this breach page is reviewed
Breach pages are generated from structured breach records and reviewed for practical risk guidance. Risk labels are based on exposed data types and are meant to help readers prioritize action.
Who was affected by the ADT breach?
The ADT data breach affected approximately 5,488,888 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 979+ known breaches.
If you ever created an account with ADT or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the ADT breach
Change your ADT password immediately
Go to ADT and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on ADT and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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