Ransomware Group thegentlemen Hits: Probe Test System
Summary
In the latest cybersecurity news, Probe Test System — an organization based in TW — has fallen victim to a ransomware attack conducted by the group thegentlemen. This data breach, discovered on 2026-08-30T09:52:37.467732+00:00, underscores the increasing need for proactive cybersecurity defenses as we continue through 2026.
Incident Report
| Attribute | Information |
|---|---|
| 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 | 2026-08-28T17:04:16+00:00 |
| Discovery Date | 2026-08-30T09:52:37.467732+00:00 |
| Region | TW |
| Target Domain | ptse.com.tw |
| Business Sector | Technology |
How to reduce your ransomware risk
Most ransomware intrusions start with a stolen password or a phishing email. A few proactive steps sharply cut your exposure:
- realistic phishing tests — close the gap attackers exploit.
- train staff to spot attacks — close the gap attackers exploit.
Want to know if you’re already exposed? Run a free scan with the HookPhish data breach checker.
Disclaimer
HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.
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