When they say backdoor do they really mean virus / RAT / malware? If there is a backdoor in Linux that would be very big news. If it's a RAT [1] that's PEBKAC [2] and not a Linux Backdoor. If there is a Linux Backdoor one should be able to link to it under this directory [3].<p>[1] - <a href="https://en.wikipedia.org/wiki/Remote_access_trojan#Malicious_variants" rel="nofollow">https://en.wikipedia.org/wiki/Remote_access_trojan#Malicious...</a><p>[2] - <a href="https://en.wikipedia.org/wiki/PEBKAC" rel="nofollow">https://en.wikipedia.org/wiki/PEBKAC</a><p>[3] - <a href="https://www.kernel.org/pub/" rel="nofollow">https://www.kernel.org/pub/</a>