HackingData ExfiltratedCustomer Data InvolvedPIIIDENTITY_BASICMediumContained
MASTEC, INC.
bd_b14ee6c6db7a5726 · schema v1 · pii pii-v1
Full breach record for MASTEC, INC. →MasTec, Inc. reported an external system breach (hacking) occurring on August 9, 2025, discovered on April 23, 2026. The incident affected 25,220 individuals, including 11 Maine residents. Notification was sent on June 5, 2026, offering identity theft protection services via CyEx Financial Shield. The breach involved unauthorized access to external systems.
Maine clockDiscovered Apr 23, 2026 → Filed with AG Jun 5, 202643d ⏱ ME AG >30d6 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
This filing is one of 2 about the same incident.View merged incident
Linked disclosures
Why this link?Regulatory filings (1) · sorted by filing gap
- bd_2db96186099527c3Texas State AGfiled 2026-06-09(4d gap)Verified
Source provenance
- Source URL
- https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/2bf42d37-96db-467d-a802-1624035c31c9.html
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
- 0b7c51d312aedd42a706b2ca720236fdbc69a39836af105787e3222982cd3756
Reporting entity
- Name
- Shook, Hardy & Bacon L.L.P.norm: shook hardy bacon
Victim entity
- Name
- MASTEC, INC.norm: mastec
Incident
- Discovered
- Apr 23, 2026
- Materiality determined
- —
- Notification sent
- Jun 5, 2026
- Affected individuals
- 25,220
- Data types
- PIIIDENTITY_BASIC
- Attack vector
- Unauthorized Access
- MITRE ATT&CK
- T1190 Exploit Public-Facing Application
- Threat actor
- External
- Initial access
- exploit_public_facing
Compliance
- Time to disclose
- 6 weeks(43 days from discovery to filing)
- Compliance flags
- ME AG >30d · 43d
- Discovery-date grounding
- unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
- Clock breakdown
Statute Window Elapsed Threshold Status Maine Discovered: Apr 23, 2026→ Filed with AG: Jun 5, 202643d 30 days (soft) ME AG >30d
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.