DisclosureLens
GLOBALMalwareTechnologyInformationRansomwareEndzoneRansom DemandedActor NamedMedium

AT&T INC.

bd_445edc9cbb79cd1c · schema v1 · pii pii-v2

Severity

Medium

Discovered

—

Filed

Sep 18, 2026

To disclose

—

Affected

Not disclosed

Confidence

50%
Full breach record for AT&T INC. →19 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Endzone on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: TechnologyDiscovered: 2026-09-18
View aggregator listing on ransomware.live

Source: Ransomware.live

Post text · scraped from the leak site

Revenue: $125.6 billion Initial access was via a CX contractor doing business with AT&T. Access originally used as vehicle for Equipment Changes/Call Forwarding (thanks a lot TORCH patch) - VPN + HVD (both external and internal MyDesktop) instances were accessed for a prolonged period without any detection or incident response taking place. Certificates exported from certlm in the VDI + OPUS self installer (automatically joins EP to S1) opened up the door to the VPN. Salesforce data was accessed via a project manager ATTUID + a DirecTV contractor who for some reason had the apps available in Salesforce. AT&T CSO, if you are reading this, you are to contact us ASAP!

Incident timeline — mostly unverified

? — ?

Breach window unknown

Sep 18, 2026

Claim posted

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

—

Compliance clock

Not assessable

Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this group

endzone

2 victims claimed globally2 tracked hereFull profile →