Win32.Aim is a typical backdoor program that will enter your system as Trojan initially.  Its Trojan abilities allow it to enter secretly and stay there undetected by running silently.  It will execute itself on each Windows startup.  Once this pest has entered, it will allow another intruder to enter.  This intruder is usually the virus’ author – a hacker.  The hacker will weasel its way in and will immediately get to work at retrieving all of your most sensitive and confidential information.  Your financial passwords and logins are at risk of being stolen.
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