Where do viruses come from?

Where do viruses, spyware and adware come from?

• i, have a lot of anti spyware and anti virus programs. i run them and let them scan my computer twice a day, and each time the find about 7 infected files together! how can i stop this? and where do the infected files come from?

• Answer:

  Viruses and other malware come from a variety of places. 1. Not having the proper updates installed allows worms to essentially hack your computer and install itself. 2. Opening unknown attachments 3. Visiting sites that use known vulnerabilities in windows to install software without your permission. 4. Mistakenly installing software from websites thinking they are beneficial. 5. Installing free software without reading the end user license agreement and thus not knowing they are also install spyware/adware on your computer as well. Good internet practices can be found here and recommendations on what software to use: http://www.bleepingcomputer.com/tutorials/tutorial82.html I also have a tutorial explaining about the different types of malware and why they are made: http://www.bleepingcomputer.com/tutorials/tutorial41.html