Malware (malicious software) is a software developed by hackers to run on computers and gather information or damage/harm your computer. Malware includes Viruses, Trojans and Spyware. . Viruses are placed or attached to commonly used programs so that virus will be activated when the program is started. The typical way for viruses to spread is through email attachments. To protect yourself from viruses and malware, install antivirus on your computer. I recommend Panda Cloud because it is free and works very well. When you get an email that looks suspicious, do not open any links or attachments. One final note, do not give out credit card information to popups. This is a common malware scam.