- Slow performance
- Internet Explorer errors or lockups
- Excessive “pop-up” advertisements
- Home page has changed
- Email or Internet access a lot slower
- System lockups
We will help you recover your operating system, applications and data. We will also install software to protect your computer from malicious programs in the future.
- Virus and Spyware Totally Removed
- Troubleshoot and Repair
- ReInstall Windows and Applications
- Install Security Software
A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user.
Defining viruses, worms, and Trojan horses
A computer virus, according to Webster’s Collegiate Dictionary, is “a computer program usually hidden within another seemingly innocuous program that produces copies of itself and inserts them into other programs or files, and that usually performs a malicious action (such as destroying data.)” Two categories of viruses, macro viruses and worms, are especially common today. Computer viruses are never naturally occurring; they are always man-made. Once created and released, however, their spread is not directly under human control.
- Macro viruses: A macro is a piece of code that can be embedded in a data file. A macro virus is a virus that exists as a macro attached to a data file. In most respects, macro virusesare like all other viruses. The main difference is that they are attached to data files (such as documents) rather than executable programs.
- Worms: Worms are very similar to viruses in that they are computer programs that replicate functional copies of themselves (usually to other computer systems via network connections) and often, but not always contain some functionality that will interfere with the normal use of a computer or a program. The difference is that unlike viruses, worms exist as separate entities; they do not attach themselves to other files or programs. Because of their similarity to viruses, worms are often also referred to as viruses.
- Trojan horses: A Trojan horse is a program that does something undocumented which the programmer intended, but that the user would not approve of if he or she knew about it. According tosome people, a virus is a particular case of a Trojan horse, namelyone which is able to spread to other programs (i.e., it turns theminto Trojans too). According to others, a virus that does not do any deliberate damage (other than merely replicating) is not a Trojan. Finally, despite the definitions, many people use the term “Trojan” torefer only to a non-replicating malicious program.