UnknownGovernment IDFinancial accountPCIMedium

MASTEC, INC.

bd_17006039c927389d · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jun 5, 2026

To disclose

—

Affected

8state residents only

Linked

9 filings

Confidence

95%

Full breach record for MASTEC, INC. →2 incidents on file

MasTec, Inc. reported a data breach to the Vermont Attorney General. The breach was reported to the AGO on 2026-06-05. The reporting organization type is Other Commercial. 8 Vermont residents were affected. Categories of data breached: Social Security Numbers, Financial Account Codes, Credit and Debit Account Info.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Jun 5, 2026

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 9 about the same incident.View merged incident

A leak claim by cl0p about this victim predates this filing by 216 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_077ee15e6166ed792025-10-31 · +216dVerified by operator

Regulatory filings (7) · sorted by filing gap

Indiana State AGbd_2337a1feed74d7a42026-06-05Verified
Nebraska State AGbd_69df7fd6f827f7472026-06-05Verified
Maine State AGbd_b14ee6c6db7a57262026-06-05Verified
South Carolina State AGbd_d93b0d10e9a7baae2026-06-05Verified

Show 3 more filings ↓up to 4d gap

New Hampshire State AGbd_9a55bbe733ae71cb2026-06-04 · +1dCandidate
Texas State AGbd_2db96186099527c32026-06-09 · +4dVerified
Massachusetts State AGbd_fa5d678c3d2160372026-06-09 · +4dVerified

Name: MASTEC, INC.
norm: mastec
Domain: mastec.com

Name: MASTEC, INC.
norm: mastec
Domain: mastec.com

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 8state-resident count only
Data types: —
Data elements: Social Security numberFinancial account numberPayment card number
Attack vector: Unknown

Compliance flags: Leak >180d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

New Hampshire State AGJun 4 · first

Indiana State AG+1d

Nebraska State AG+1d

Maine State AG+1d

South Carolina State AG+1d

Vermont State AG+1d · this page

Texas State AG+5d

Massachusetts State AG+5d

Pattern: first filing Jun 4 (NH), last Jun 9 (MA) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://ago.vermont.gov/categories/security-breach-notices
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: 668beca798df8d927533ec554bda1ba3d3cd6348fab627b84f5f1743e55d412e

Linked disclosures

Ransomware claims (1)

Regulatory filings (7) · sorted by filing gap

Reporting entityMASTEC, INC.

Victim entityMASTEC, INC.

IncidentUnknown

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov