Incident BriefingsCharter Communications contact-data incident

Charter Communications contact-data incident

Charter Communications acknowledged recent unauthorized activity and a related data-exfiltration incident. A verified HIBP corpus containing contact records and an employee-directory subset associated with the incident.

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Summary

  • Environment: Consumer brand through which Charter serves residential and business customers; not a separately asserted system intrusion.
  • Operational impact: No outage or recovery duration quantified
  • Financial impact: No public cost estimate
  • Record status: Developing record. Reviewed August 9, 2026; updated as evidence emerges.

What happened

Charter Communications acknowledged recent unauthorized activity and a related data-exfiltration incident. [2]

Impact

A verified HIBP corpus containing contact records and an employee-directory subset associated with the incident. [1]

Documented data types include:

  • Names — Names listed for the HIBP corpus; not classified by Charter as sensitive personal information. [1]
  • Employment information — Job titles listed for an approximately 85,000-record internal employee-directory subset in HIBP’s description. [1]
  • Contact information — Email addresses, phone numbers, and physical addresses listed for the HIBP corpus; not classified by Charter as sensitive PI or CPNI. [1]

A cited record reports 4,851,517 records (Unique email addresses represented in the HIBP corpus; not a Charter-confirmed number of customers, employees, accounts, or affected individuals; as of 2026-05-28). [1]

A cited record reports 85,000 records (Approximate HIBP-described subset originating from an internal employee directory; not a Charter-confirmed employee count). [1]

HIBP reported that the associated data was published publicly after the incident. [1]

Charter said no sensitive personal information or customer proprietary network information was exfiltrated as a result of the recent activity. [2]

Timeline

  1. Documented event

    HIBP BreachDate; Charter’s statement confirms recent activity but does not establish this as an exact intrusion, detection, or containment date.

    [1]

  2. Public disclosure

    Date BleepingComputer published Charter’s direct statement.

    [2]

  3. Briefing updated

    This briefing was last reviewed and updated on August 9, 2026.

Threat Group & Attack Vector

The cited public record does not establish a specific initial-access vector, malware family, exploited vulnerability, or ATT&CK technique.

Actors

  • No threat actor group has been identified in the reviewed public evidence.

TTPs

  • No specific MITRE ATT&CK technique is currently mapped for this case.

Response

Charter said it was aware of the situation and was following its security protocols. Charter said it was in the process of alerting appropriate authorities. No access path, attribution, scale, or recovery detail is inferred beyond the cited claims. [2]