Lanmark Group
sinobiThis record tracks a ransomware attack claimed by the sinobi group against Lanmark Group. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
Lanmark Group, Inc. is a full-service general contracting firm based in Brooklyn, NY, founded in 2005. The company specializes in handling complex construction projects for both public and private sector clients, demonstrating a commitment to quality, safety, and client satisfaction. With a focus on meticulous planning and execution, Lanmark has established a strong reputation through their extensive portfolio of successful projects. Their expertise is showcased in multi-million dollar constructions, making them a trusted partner for state and municipal agencies.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.