MASTEC, INC.
bd_077ee15e6166ed79 · schema v1 · pii pii-v1
Full breach record for MASTEC, INC. →2 incidents on fileThreat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Cl0p on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
MasTec, Inc. is a leading American infrastructure construction firm. Founded in 1929 and currently headquartered in Coral Gables, Florida, MasTec delivers a range of services across different industries including electricity, oil and gas, technology, and telecommunications. Its wide array of services include engineering, building, installation, maintenance, upgrade of energy, utility, and communications infrastructure.
J jump to incidentP pin to compareR raw source
Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 31, 2025
Claim posted
—
Corroborated · see linked filings
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
—
Compliance clock
Not assessable
Linked disclosures
Why this link?Regulatory filings (8) · sorted by filing gap
- New Hampshire State AGbd_9a55bbe733ae71cb2026-06-04 · +215dCandidate
- Vermont State AGbd_17006039c927389d2026-06-05 · +216dVerified
- Indiana State AGbd_2337a1feed74d7a42026-06-05 · +216dVerified
- Nebraska State AGbd_69df7fd6f827f7472026-06-05 · +216dVerified
Show 4 more filings ↓Show fewer ↑up to 220d gap
- Maine State AGbd_b14ee6c6db7a57262026-06-05 · +216dVerified
- South Carolina State AGbd_d93b0d10e9a7baae2026-06-05 · +216dVerified
- Texas State AGbd_2db96186099527c32026-06-09 · +220dVerified
- Massachusetts State AGbd_fa5d678c3d2160372026-06-09 · +220dVerified
Filing propagation · 9 filings · 8 states
View merged incident ↗Pattern: first filing Oct 31, last Jun 9 (MA) — a 220-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.