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Thousands of Asus routers are being hit with stealthy, persistent backdoors


Backdoor giving full administrative control can survive reboots and firmware updates.

Thousands of home and small office routers manufactured by Asus are being infected with a stealthy backdoor that can survive reboots and firmware updates in an attack by a nation-state or another well-resourced threat actor, researchers said. “‍The attacker’s access survives both reboots and firmware updates, giving them durable control over affected devices,” researchers from security firm GreyNoise reported Wednesday. “The attacker maintains long-term access without dropping malware or leaving obvious traces by chaining authentication bypasses, exploiting a known vulnerability, and abusing legitimate configuration features.”

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