Basement Systems
bd_8734708b29263a7b · schema v1 · pii pii-v1
Full breach record for Basement Systems →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Cicada3301 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
Basement Systems Inc., based in Seymour, Connecticut, is a network of basement waterproofing and crawl space repair contractors spanning across the United States and Canada. Downloads: http://cicadacnft7gcgnveb7wjm6pjpjcjcsugogmlrat7u7pcel3iwb7bhyd.onion/basementsystems-recruiting http://cicadacnft7gcgnveb7wjm6pjpjcjcsugogmlrat7u7pcel3iwb7bhyd.onion/basementsystems-shared http://cicadacnft7gcgnveb7wjm6pjpjcjcsugogmlrat7u7pcel3iwb7bhyd.onion/basementsystems-users
J jump to incidentP pin to compareR raw source
Incident timeline — mostly unverified
? — ?
Breach window unknown
Jun 18, 2024
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 (4) · sorted by filing gap
- Vermont State AGbd_2561b25c5338bedd2024-08-02 · +45dVerified
- Maine State AGbd_44eb918dcc7cf5252024-08-02 · +45dVerified by operator
- New Hampshire State AGbd_51292835c7972afb2024-08-02 · +45dVerified
- Massachusetts State AGbd_90bfd657a0d8bbf72024-08-03 · +46dVerified by operator
Filing propagation · 5 filings · 4 states
View merged incident ↗Pattern: first filing Jun 18, last Aug 3 (MA) — a 46-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.
cicada3301
According to ransomware.live, Cicada3301 is a ransomware-as-a-service group (tracked as Repellent Scorpius by Palo Alto) that emerged in mid-2024 using Rust-based ransomware targeting Windows, Linux, and ESXi systems, suspected to be a successor of BlackCat/ALPHV and running an affiliate program with 20% commissions.