HackingData ExfiltratedCustomer Data InvolvedPIIIDENTITY_BASICLowContained
MASTEC, INC.
bd_d93b0d10e9a7baae · schema v1 · pii pii-v1
Full breach record for MASTEC, INC. →MasTec, Inc. reported a data security event in South Carolina involving unauthorized access to a portion of its computer network in August 2025. The breach affected personal information of individuals, including 73 Rhode Island residents. MasTec engaged third-party cybersecurity experts and law enforcement, and is offering complimentary credit and identity-theft monitoring services to affected individuals.
This filing is one of 5 about the same incident.View merged incident
Linked disclosures
Why this link?Regulatory filings (4) · sorted by filing gap
- bd_17006039c927389dVermont State AGfiled 2026-06-05Verified
- bd_2337a1feed74d7a4Indiana State AGfiled 2026-06-05Verified
- bd_9a55bbe733ae71cbNew Hampshire State AGfiled 2026-06-04(1d gap)Candidate
- bd_fa5d678c3d216037Massachusetts State AGfiled 2026-06-01(4d gap)Verified
Source provenance
- Source URL
- https://consumer.sc.gov/sites/consumer/files/Documents/Security%20Breach%20Notices/2026/Consumer%20Letter%20-%20MasTec.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Jun 5, 2026
- Raw hash
- 014004ad47f34ea1ae987f55ce2d1dedd6d217db97f64d240a9a509b0ca59bb7
Reporting entity
- Name
- MASTEC, INC.norm: mastec
Victim entity
- Name
- MASTEC, INC.norm: mastec
Incident
- Discovered
- Oct 1, 2025
- Materiality determined
- —
- Notification sent
- May 11, 2026
- Affected individuals
- Not disclosed
- Data types
- PIIIDENTITY_BASIC
- Attack vector
- Unauthorized Access
- MITRE ATT&CK
- T1190 Exploit Public-Facing Application
- Threat actor
- External
- Regulator citations
- notified law enforcement
- Initial access
- exploit_public_facing
Compliance
- Time to disclose
- 35 weeks(247 days from discovery to filing)
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.