Security researchers found a new malware, dubbed Mayhem, that targets Linux and FreeBSD web servers in order to turn them into bots, without requiring root access.Three security experts, Andrej Kovalev, Konstantin Ostrashkevich and Evgeny Sidorov, from Russia-based Yandex, discovered that the malicious attack is conducted via a more sophisticated PHP script.Mayhem was first detected in April 2014 and the researchers say that it is continuing the Fort Disco brute-force campaign th…