If that new malware is contained in a limited account then your AV software can find it later. It often takes many days or a few weeks for virus definitions to recognize new malware. One advantage of using a limited user account is that it increases the effectiveness of anti-virus software. Most likely any passwords that you entered in to your browser and other applications can be intercepted. Depending on the situation and possibly Windows version, it can also record the password that you enter when you use Run-As.

It can install a keylogger to monitor all key presses, including programs that are running as a different user that you started by right clicking Run-As. In fact, the restricted environment allows a lot to be done. Now there are some pieces of malware out there that will take advantage of the restricted environment and do what it can. The probability of your windows malware escaping VirtualBox into your linux system is pretty much zero, especially if you reset your VM to a known safe state after you are done.įor practical purposes, the vast majority of malware that is out there will simply fail to install or work at all if it doesn't have administrator access. If you want to run software you don’t completely trust, VMs (or at least sandboxie within windows) are the way to go. If you want more protection and don‘t want to spend money, i recommend the free version of avira. If you don‘t click on suspicious emails or download and run suspicious stuff, going without antivirus is a viable option. The antivirus built into windows has become quite capable. Anyway, malware does not need admin rights to e.g. But most malware either doesn‘t bother or the author doesn‘t know how.

Most bypasses abuse how microsoft gives special trust to some of it’s own programs.

UAC (this sudo-like concept we have since windows Vista) can be bypassed in most cases when you account has admin rights. There are even legitimate programs that happily install without admin rights or Elevation prompts. Without admin privs it can copy itselt to your „home directory“, make itself persistent, get read access to all your data, write access to most of your data, internet access, etc. Most current malware does not need admin privs (or „high integrity“). Sorry, there is a bit of misinformation here.

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