Operation WrtHug: How Legacy ASUS Routers Became a Global Botnet in 2024
In early 2024, thousands of end-of-life ASUS WRT routers worldwide were compromised in a large-scale campaign dubbed "Operation WrtHug". Attackers exploited at least six known vulnerabilities in outdated router firmware to hijack control of the devices. These compromised routers were assimilated into a new botnet infrastructure, enabling malicious actors to facilitate unauthorized traffic routing, launch further attacks, and potentially intercept sensitive data passing through these compromised endpoints. The incident points to neglected device lifecycle management and widespread exposure due to unpatched, unsupported consumer hardware. This breach is particularly notable as it reflects a growing trend: attackers shifting focus to vulnerable, unmaintained IoT and networking hardware. With legacy devices lacking security updates, organizations face heightened risk of compromise and regulatory scrutiny, while defenders must urgently address asset visibility and enforcement across distributed infrastructure.
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