In April 2026 ADT, the US home-security company, confirmed a data breach after ShinyHunters listed it on a leak site with a ransom deadline.
Short answer
Was ADT hacked?
Yes. ADT confirmed a data breach after ShinyHunters listed it on its leak site in April 2026. ADT says no financial data was accessed and its security systems and monitoring were not affected.
Have I Been Pwned counted about 5.5 million people; ShinyHunters claimed more than 10 million records and says it vished an Okta SSO account and reached ADT’s Salesforce instance, which ADT has not confirmed.
Timeline at a glance
Apr 2026ADT confirms a breach after a ShinyHunters leak threat. (BleepingComputer)Confirmed
Apr 2026HIBP lists ~5.5M people; ShinyHunters claimed 10M+ records. (HIBP)Reported
Last updated October 31, 2026. Every entry is dated and linked to its source; claims by attackers are labelled as claims, never stated as fact.
ADT’s security posture at the time
What ADT publicly said about its security certifications and controls, how big it is, and how its shares moved, each tied to a source. A certificate covers a stated scope at a point in time; it is not a guarantee about every system. Reviewed 31 October 2026. Compare all 2026 breaches.
Security certifications publicly held
No public certification found.
No public certification found on the company’s own security, trust or compliance pages, in filings, or in the certificate registries searched (BSI, CSA STAR). That is a data point, not proof that none exists.
Publicly known security controls and platforms
Okta single sign-on and Salesforce: ShinyHunters says it vished an employee’s Okta SSO account and pulled data from ADT’s Salesforce instance. ADT has not confirmed the method. (attacker claim; BleepingComputer — ADT confirms data breach)
No reliable report of a share-price move around the disclosure was found.
ADT incident timeline, in detail
Confirmed = acknowledged by ADT, a regulator filing or a court. Reported = credible reporting ADT has not fully confirmed. Unverified claim = an attacker or leak-site claim.
Apr 2026ConfirmedIdentity / SaaS
Customer data taken; ShinyHunters claims Okta and Salesforce route
What happened. ADT confirmed a data breach after ShinyHunters listed it on its leak site with a ransom deadline. ADT says no financial data was accessed and its security systems and monitoring were not affected.
Impact. ADT says no financial data and no security systems were affected. People or records affected: About 5.5 million people, per Have I Been Pwned; ShinyHunters claimed more than 10 million records.
We found no SOC 2 or ISO 27001 certification published by ADT. That does not prove it had none; it means none was public.
The way in was a person, not a server
Like most of 2026’s large data thefts, this one is described as starting with social engineering: a phished or voice-phished login, often to single sign-on, then bulk export from a SaaS application. Certification audits test that identity controls exist and operate; they do not promise that no employee or contractor will ever be talked out of a login.
What it means for ADT ADT customers — and what to do
What ADT’s customers, partners and security teams can do now, based only on what has been disclosed.
1.Assume phishing follows the breach
Exposed contact details are used for convincing follow-up phishing. Warn staff and customers that genuine notices will not ask for passwords or payment.
2.Check your own help-desk and SSO flows
Require callback verification and phishing-resistant MFA for account and MFA resets; voice requests alone should never reset a login.
3.Ask the vendor what was exported, in writing
Ask which applications and fields were reached, the date range, and whether your organisation’s records were included.
Yes. ADT confirmed a data breach after ShinyHunters listed it on its leak site in April 2026. ADT says no financial data was accessed and its security systems and monitoring were not affected.
Did ADT have SOC 2 or ISO 27001 certification?+
We found no SOC 2 or ISO 27001 certification published by ADT. That does not prove it had none; it means none was public.
More in the Breach Index
Same sourced, verification-tagged timeline, company by company — compare how peers have fared.
Independent analysis for security-leadership education; not affiliated with or endorsed by ADT. Facts are attributed to the dated sources above, and anything disputed or unconfirmed is labelled as such. See the full Breach Index.
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