ADT Suffers Data Breach via Vishing Attack on Okta SSO
ADT detected an intrusion on April 20, 2026, which was later confirmed to be a data breach caused by a vishing attack that compromised an employee's Okta SSO account. The ShinyHunters group claimed responsibility, exfiltrating and publicly leaking an 11 GB archive of data, including names, phone numbers, and addresses of 5.5 million customers.
Signal context
First seen: Apr 20, 2026
Last updated: Jun 26, 2026
Status: Public signal
Key points
- Intrusion detected on April 20, 2026.
- Caused by a vishing attack compromising an employee's Okta SSO account.
- ShinyHunters group claimed responsibility.
Signal analysis
BetaIt helps compare this signal with other published signals without treating the labels as final determinations.
Likely country: Location not provided
The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.
- Source type: outside the affected organization
- Source type: possible insider or internal misuse
Impact area: Confidentiality
Likely asset: User or customer data
- 1 signal in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
ADT Salesforce Data Breach 2026: ShinyHunters Compromise Okta SSO via Vishing Attack - Sypher Newshttps://syphernews.com/adt-salesforce-data-breach-2026-shinyhunters-compromise-okta-sso-via-vishing-attack/Public source from syphernews.com.
ADT Data Breach - Have I Been Pwnedhttps://haveibeenpwned.com/PwnedWebsites#ADTPublic source from haveibeenpwned.com.
Top 10 Data Breaches of April 2026 - Strobes Securityhttps://www.strobes.co/blog/top-10-data-breaches-of-april-2026/Public source from strobes.co.
April 2026 Data Breaches: 15+ Major Incidents & Latest Updates - SharkStrikerhttps://sharkstriker.com/blog/april-2026-data-breaches/Public source from sharkstriker.com.
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