1. ClamWin Portable
We started with ClamWin , open source antivirus that has earned a good reputation thanks to its ClamAV engine, which is powered by a system of free updating your virus database. It has a portable version that you can download and install directly into the USB if you want.
Although appearance is as easy as updating, choose the drive and give the scan button , you also have several options to specify what types of files you want included or excluded from the analysis. as well as other features including email alerts and automatically delete or leave quarantined the affected programs.
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