SYNful Knock router exploit isn’t going away soon

The SYNful Knock compromise of routers can implant software that creates backdoors to let attackers return over and over, a sophisticated endeavor that demonstrates the ingenuity of its creators, according to a member of the team that discovered the attack in the wild.
The software has features that enable it to stay hidden within networks so it can be updated and new attack modules can be downloaded for long periods of time, according to FireEye researchers.
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