China's 'Fire Ant' campaign used compromised Cisco routers as platform for more attacks

September 1, 2026 · The Record · Severity: MEDIUM

A hacking operation dubbed Fire Ant "didn’t just compromise systems," according to researchers. "It compromised the trust layer those systems depend on." By hijacking Cisco routers, the attackers established a stealthy foothold within network infrastructure, using the devices as a platform to launch further attacks. This allowed them to intercept traffic, pivot to other systems, or remain undetected for extended periods. The operation ultimately illustrates a growing trend where adversaries target network hardware to undermine the trust layer that defenders rely upon.

Key Takeaways

Fire Ant campaign hijacked Cisco routers to establish stealthy footholds within network infrastructure.
Attackers used compromised routers to intercept traffic and pivot to other systems undetected.
The operation highlights a trend of targeting network hardware to undermine defender trust.