CrazyHunter
A ransomware group reported by Trend Micro in 2025 that focuses on organizations in Taiwan. Its victims are small and mid-sized organizations in healthcare, education and manufacturing.
- Alert level
- 1/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 0
- Personal data leaked (disclosed)
- None confirmed
How they attack
Entry
Guessing weak passwords
Like trying doors whose keypad codes were never changed from "1234".
Inside
Using an old trusted part to stop the guards
Like bringing in an old but genuine key to get into the security system's power room.
Goal
Locking data for ransom
Like padlocking the filing cabinets and demanding money for the key.
Sources
Attributions are quoted as assessed by governments and security vendors. VulnPulse does not make attributions itself.
Leak counts only add up figures disclosed by the affected companies or authorities, never the attackers' own claims. We do not list victim names or link to leak sites.
The alert level is calculated automatically from reports and advisories in the last 90 days, known exploited vulnerabilities, and whether the group has targeted Japan.
Updated 2026-10-23 · daily