What is malware and how can I protect myself from it?

Malware, short for malicious software, is software designed to infiltrate a computer without the owner's informed consent. The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code. The term "computer virus" is sometimes used as a catch-all phrase to include all types of malware, including true viruses.

Software is considered malware based on the perceived intent of the creator rather than any particular features. Malware includes computer viruses, worms, trojan horses, most rootkits, spyware, dishonest adware, crimeware and other malicious and unwanted software.

To protect yourself from malware you can download Malwarebytes Anti-malware for free. This will remove any malware programs you may have.

Your Computer: Leave it on or turn it off?

We frequently get asked whether a person should turn their computer off, or leave it on when they leave their desk every night. A July 24, 2009 article by Mina Shaghaghi gives three good reasons why you should turn your computer off.

Nearly half of all U.S. workers leave their PCs on overnight. Here, three urgent reasons to turn off before you head out:

1. Hackers spend their waking hours prowling for vulnerable computers. Don't assume your firm has up-to-date security—a third of small businesses don't.

2. Your computer is a carbon-spewing beast. Computers left on standby will emit 20 million tons of carbon dioxide this year—roughly the same amount as 4 million cars.

3. Powering down may save your job. U.S. companies waste $2.8 billion annually keeping computers on after hours—in tough times, that's a heck of a lot of salaries.