to make a long story short
the file is reported as a virus because it open certain ports that are in use by the gameserver and that are ports that are not suposed to be open (check port list and meaning of the ports)
on the other side , some code of the accountserver (thats the only file that get reported) do some stuff that act like a trojan , like keeping a connection open and forward other connections to a differend port
a other example i can give of a false trojan are files that are encoded with base64
i got a hex scanner on my server , and if i upload 2 times the same file , where 1 file is coded with base64 and a other file not , then the base64 file triggers my scanner because of strange looking code
virus scanners works with a algoritme , it checks on ceratain strings in the code
as all files have a certain code is it possible that it can contain a specific string of code that match a virus
thats why they call it a false positive
if a virus scanner need to open every single file , analyse every singe file and then close every single file ... do you got 10 days time to scan 10GB ??
so for a quick scan they scan a fingerprint or something like that
anyway
if you do not trust the file , then do not use it
then a sidenote about the reported trojans
take a look at those links and then feel free to ask around who got that problem
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i do got some reports of spam mails that get sended out , but i never got it on my own servers when i runned private servers
so probaly the spam mails that get sended out has to do with other programs that the users use (no idea , i never get on a client his vps :D )
so hopely this is enouf information for you
Greetings From PowerChaos