That's the idea behind VTzilla, a Firefox add-on that scans files for viruses before you download them. Once installed, it adds a Scan with VirusTotal option to Firefox's download dialog box (which ...

Windows/Mac/Linux (Firefox/Opera/IE): Scan any file for viruses before you download it to your computer with web site Dr.Web. After installing the Firefox extension, performing the Internet Explorer ...

Third-party programs are widely used on Windows and other operating systems. But how can you tell if a program is safe to install or not? How can you be so sure that the program file you are going to ...

Firefox only (Windows/Mac/Linux): The VTzilla Firefox extension adds a Scan with VirusTotal option to Firefox's right-click context menu and file download dialog that allows you to scan any file for a ...

Geoff Kuenning, a professor of computer science at Harvey Mudd College, provides this explanation. Malicious software comes in several flavors, distinguished primarily by their method of propagation.