The Three Major Types of Computer Viruses

Computer viruses are a lot like biological ones. Once they find a suitable host, they can replicate themselves and spread their disease to others. Both types prey on weakened defense systems and the best way to fight them off is to render them non-infective and then build up immunity. For computers, the best way to do this is to periodically replace outdated antivirus software.

To date, computer engineers have identified three major types of viruses, which can be further divided into many separate subcategories. They include:

  • Macro viruses – These are the largest of the three virus types. They use built-in programming scripts in such applications as Microsoft Excel and Microsoft Word to automate the tasks. When an unsuspecting user opens a document infected by a macro virus, they give it the green light to make copies of itself in other documents and multiply.
  • Boot record infectors – These viruses are known also as boot viruses or system viruses. They attack programs stored on bootable floppy or hard disks. Every time a user boots up, the virus-infected code automatically runs as well. This gives hackers full control of an entire system and lets them do exactly what they want with it. Boot record infectors can be spread from one infected bootable disk to another.
  • File infectors – These viruses target .EXE or .COM files and changes them. File infectors get activated every time users run a compromised program. What makes this type of virus especially insidious is that it can simply stay inactive in the memory until it gets a cue to infect other program files. These viruses can get transmitted over networks, the Internet or by using infected disks.

The experts at Austin Mobile Computer Repair specialize in virus elimination. We clear infections from PCs or Macs and make sure that your antivirus software is up-to-date. When you need fast, efficient computer service, contact us. We’re your full service Austin technology repair professionals!

Call Austin Mobile Computer Repair at 512-872-2811 to handle your anti-virus needs.

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