Charter Communications Data Breach by ShinyHunters Exposes Millions of Records
Telecommunications giant Charter Communications (Spectrum) suffered a data breach attributed to the ShinyHunters hacking group. The group posted data on a dark web leak site after ransom negotiations failed. While Charter stated no sensitive data was stolen, ShinyHunters claimed to have released 42 million records, including 13 million customer records and nearly 27,000 employee records. The compromised data allegedly includes full names, email addresses, home and company addresses, and support ticket details for customers, and work emails, job titles, and home addresses for employees. The initial breach occurred around April 1, 2026, via a vishing attack on an employee's Microsoft Entra account, with the data leak and significant reporting occurring on June 5, 2026.
Signal context
First seen: Jun 5, 2026
Last updated: Jun 29, 2026
Status: Public signal
Key points
- ShinyHunters ransomware group responsible
- Data leaked on dark web after failed ransom negotiations
- Approximately 42 million records claimed by attackers (13 million customer, 27,000 employee)
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
Charter Communications Data Breach Affects 5 Million Customers - Veri Sızıntısıhttps://verisizintisi.com/en/blog/2026-06-01-charter-communications-data-breach-impacts-5-millionPublic source from verisizintisi.com.
Client advisory: Spectrum data breach raises risk of follow-on attacks | CFChttps://www.cfc.com/en-gb/knowledge/resources/advisories/2026/06/client-advisory-spectrum-data-breach-raises-risk-of-follow-on-attacks/Public source from cfc.com.
Charter Communications Data Breach Exposes 42 Million Records - Safestatehttps://www.safestate.com/post/charter-communications-data-breach-exposes-42-million-recordsPublic source from safestate.com.
Spectrum Class Action: 40 Million Records, One Vishing Call, and the CPNI Question Charter Now Faces | ComplianceHub.Wikihttps://compliancehub.wiki/spectrum-charter-data-breach-class-action-40-million/Public source from compliancehub.wiki.
This Week's Cybersecurity News: June 5th, 2026 - Applied Techhttps://appliedtech.com/blog/this-week-in-cybersecurity-june-5th-2026Public source from appliedtech.com.
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