Varian Medical Systems (USA)
0aptThis record tracks a ransomware attack claimed by the 0apt group against Varian Medical Systems (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
Varian Medical Systems is a U.S.-based healthcare technology company headquartered in Palo Alto, California, that designs, manufactures, sells, and services medical equipment and software. Its portfolio includes cancer treatment systems and oncology software used for radiotherapy, radiosurgery, proton therapy, brachytherapy, and related clinical workflows. The company serves healthcare customers globally and is part of the cancer care and medical devices ecosystem. It was listed 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.