Today one of my files (ragnarok.exe, the executable file for the online game Ragnarok Online) was also detected as Backdoor.Win32.Ceckno.DLL[at]18258572.
COMODO quarantined it.
I sent an email to the Ragnarok Online support and I left the file in quarantine for the moment because I was not sure if it was an error from COMODO or a real infection (sorry for my lack of knowledge about the subject…)
What should I do ?