Probe Test System
thegentlemenThis record tracks a ransomware attack claimed by the thegentlemen group against Probe Test System. 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
ptse.com.tw Probe Test System Corp. (PTS, 群雅電子) is a Taiwanese semiconductor back-end (OSAT) service provider operating since 2000, with plants in Zhunan and Toufen, Miaoli County (the former Hsinchu site was consolidated into Toufen in Q1 2024). Its services cover System Level Test (SLT), wafer chip probing (CP) on Chroma, ASL1000 and CTA8280 platforms, IC marking/remarking, Tape & Reel packaging (capacity ~150 KK units/month) plus lead/ball scan inspection. Long-term customers include Taiwan's leading chipmakers: Winbond, MediaTek, Novatek, Nuvoton and Macronix. The company is certified under ISO 9001, ISO 14001 and ANSI/ESD S20.20-2021.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.