Charter Communications (Spectrum) Data Breach Confirmed After ShinyHunters Extortion Threat
Charter Communications, operating as Spectrum, confirmed a data breach on May 26, 2026, following threats from the ShinyHunters extortion group to leak stolen data. The breach, which occurred around April 1, 2026, involved a vishing attack that compromised an employee's Microsoft Entra account, granting access to Salesforce data. While Charter initially stated no sensitive personal information or CPNI was exfiltrated, later breach monitoring indicated the exposed dataset was tied to 4.9 million accounts, including names, email addresses, phone numbers, physical addresses, and job titles. Researchers later reported the leak covered at least 13 million people and nearly 10 million customer-support records.
Signal context
First seen: May 26, 2026
Last updated: Jun 30, 2026
Status: Public signal
Key points
- Disclosure confirmed on May 26, 2026.
- Attributed to ShinyHunters extortion group.
- Initial breach occurred around April 1, 2026, via vishing attack compromising a Microsoft Entra account.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Information
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
- 25 signals in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
List of Recent Data Breaches in 2026 - Bright Defensehttps://www.brightdefense.com/resources/recent-data-breaches/Public source from brightdefense.com.
Biggest Cyber Attacks, Data Breaches, Ransomware Attacks of May 2026https://www.cm-alliance.com/cybersecurity-blog/biggest-cyber-attacks-data-breaches-ransomware-attacks-of-may-2026Public source from cm-alliance.com.
Data Breach Roundup (May 22 - 28, 2026) - Privacy Guideshttps://www.privacyguides.org/news/2026/05/29/data-breach-roundup-may-22-28-2026/Public source from privacyguides.org.
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