TL;DR: GreyNoise uncovered the AyySSHush botnet infecting over 8,000 hosts, mainly ASUS routers, exploiting known bypass bugs to gain persistent SSH backdoor access that survives firmware updates.
This week cybersecurity firm GreyNoise discovered that cybercriminals were silently installing backdoors in ASUS routers, seemingly with a view to using them for further attacks. The company first ...