Masimo (USA)
0aptThis record tracks a ransomware attack claimed by the 0apt group against Masimo (USA). 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
Masimo is a U.S.-based medical technology company headquartered in Irvine, California. It develops and markets patient monitoring technologies and connectivity solutions for hospitals, emergency medical services, home care providers, physicians’ offices, long-term care facilities, and consumers. The company operates healthcare and non-healthcare segments, with its healthcare business centered on sensors, software, cables, and monitors used in clinical care. In threat-intelligence listings, Masimo was identified as a ransomware victim associated with 0apt.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.