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Weaver Ant

Espionage

A China-nexus espionage group that hid inside an Asian telecom company for more than four years. It relays traffic through hijacked home routers and plants many small back doors on web servers.

Alert level
1/ 5
Reports & advisories (90 days)
0
Known exploited CVEs
0
Personal data leaked (disclosed)
None confirmed

Attribution

  • Assessed as a China-nexus threat actor — Sygnia

Exploited vulnerabilities and targeted products

Zyxel

If you run any of these products, first make sure they are updated to a fixed version.

How they attack

Entry

Entering via a misconfigured public app

Like slipping in through a side door someone forgot to lock.

Inside

Planting small back doors on web servers

Like leaving a tiny copied key in the shop's back-door lock that only the intruder knows about.

Inside

Chaining back doors together

Like passing a message through a series of reception windows until it reaches the back office.

Inside

Hiding behind hijacked home routers

Like routing mail through strangers' mailboxes so nobody can tell where it really came from.

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