BlackTech
aka Palmerworm, Temp.Overboard, Circuit Panda, Radio Panda
An espionage group that gets in through overseas subsidiaries and rewrites router software to cross into headquarters' networks. It mainly targets government, industry and telecoms in Japan and the US.
- Alert level
- 2/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 0
- Personal data leaked (disclosed)
- None confirmed
Attribution
- Assessed as PRC-linked — US NSA, FBI, CISA and Japan's NPA and NISC
Exploited vulnerabilities and targeted products
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Entering via overseas subsidiaries
Like slipping in through a lightly guarded overseas branch and then walking the internal corridor to headquarters.
Inside
Rewriting router firmware
Like swapping the gatekeeper for an impostor who waves only the intruders through.
Goal
Quietly stealing information
Like a spy who stays for months, copying files from the cabinet a little at a time.
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