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Ransomware group thegentlemen hits Probe Test System
Probe Test System — a technology target operating in TW has been listed by the thegentlemen ransomware group on 2026-08-28. The information below reflects what the threat actor has publicly claimed on their leak site; the details have not been independently verified.
Incident Report
| Target Organization | Probe Test System |
|---|---|
| Threat Group | thegentlemen |
| 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. |
| Date of Breach | 2026-08-28 |
| Discovery Date | 2026-08-30 |
| Region | TW |
| Target Domain | ptse.com.tw |
| Business Sector | Technology |
| Severity | MEDIUM |
Claim by thegentlemen
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.
Posted by the thegentlemen threat actor on its public leak site. This is the group's own statement and has not been independently verified by HackerFeeds.
Sources
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