Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » C »

companion virus


A type of computer virus that compromises a feature of DOS that enables software with the same name, but different extensions, to operate with different priorities. For example you may have program.exe on your computer, and the virus may create a file called program.com. When the computer executes program.exe, the virus runs program.com before program.exe is executed. In many cases, the real program will run so users believe that the system is operating normally and aren't aware that a virus was run on the system.

See The Difference Between a Virus, Worm and Trojan Horse in the Did You Know? section of Webopedia.
Also see Preventative Maintenance Tips for Your PC in the Did You Know? section of Webopedia.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
Keeping Data Secure Is Tougher than Ever

If hackers get their hands on your company's data, they can wreak havoc on customer relationships and cause tremendous damage to your brand and... Read More »

Windows XP: Move Along, There's Nothing to See Here

After more than 12 years of holding the title of most popular operating system in the world, Windows XP is taking center stage for its final... Read More »

Report: The Role of Big Data in the Marketing Industry

According to a new study from Infogroup Targeting Solutions, we can expect to see companies spend heavily on big data marketing initiatives in... Read More »

QUICK REFERENCE
How to Create a Desktop Shortcut to a Website

Creating desktop shortcuts to a websites is useful. When you double-click the icon from your desktop it automatically launches the browser and... Read More »

Flash Data Storage Vendor Trends

Although it is almost impossible to keep up with the pace of ongoing product releases, here are three recent highlights in the flash data storage... Read More »

15 Important Big Data Facts for IT Professionals

Keeping track of big data trends, research and statistics gives IT professionals  a solid foundation to plan big data projects. Here are 15... Read More »