HEAVY CONSTRUCTION SYSTEMS SPECIALISTS, INC.
bd_3b2b6a3616578f4a · schema v1 · pii pii-v1
Full breach record for HEAVY CONSTRUCTION SYSTEMS SPECIALISTS, INC. →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Medusa 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
Construction Systems inc. provides complete commercial renovation and specialties installation services for medical, commercial office, industrial, retail, education and etc. Construction Systems corporate office is located in 2865 E 14th Ave, Columbus, Ohio, 43219, United States and has 105 employees.The total amount of data leakage is 80.80 GB
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 11, 2024
Claim posted
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Corroborated · see linked filings
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- New Hampshire State AGbd_1ea81b194ebcf1cb2025-01-08 · +88dCandidate
- Maryland State AGbd_1003dcc4662eaf222025-11-13 · +397dVerified
- Texas State AGbd_1c9ce00e4c47f4632026-01-05 · +450dVerified
Filing propagation · 4 filings · 3 states
View merged incident ↗Pattern: first filing Oct 11, last Jan 5 (TX) — a 450-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.
medusa
According to ransomware.live, Medusa is a ransomware-as-a-service operation active since June 2021 that has targeted over 300 victims across critical infrastructure sectors including healthcare, education, legal, and manufacturing using double-extortion, with attacks surging 42% between 2023 and 2024 and a formal CISA advisory issued in early 2025.