Computer security

There are many different types of security to prevent viruses and hacking. AVG, Norton, Firewall, and site blockers are a few types of security for computers. At the school where I work all the computers have AVG and Firewall.
AVG is an antivirus system and is the most common virus protector. For most computers, AVG can be downloaded for free. AVG protects a computer as long as you want it to. The only down-fall to AVG is that it runs slow which can slow other programs down.
Firewall is another type of security that keeps a computer safe from viruses. Firewall also prevents hackers from being able to hack into someone else’s files. The school also provides this type of security on all school computers in order to keep student files safe and confidential. Firewall is a good security program as far as keeping hackers out, but it is not that good when it comes to viruses. That is why the school also has AVG to use as a back-up so that no viruses are able to come through and cause problems with the computers.
The school technology program also put site blockers on all the computers in the school system. This site blocker is controlled by the technology center. All the teachers in the schools decide what websites would not be appropriate for students to see. Then the technology coordinator puts a block on all those sites to insure that students will not have access to them. With site blocker in place, students are not permitted to use any social networks or any site that could be inappropriate. This site blocker is also a good thing to have in schools to ensure that the computers are not prone to viruses. Some websites and social network sites can put viruses on a computer without anyone knowing until it is too late. The computer lab teacher at the school where I work stated he got a virus on his computer at home from his wife instant messaging her friend. Her friend had a virus on her computer and did not know it and when she was messaging her friend the virus spread to the other computer without either person knowing it.
Once a computer contracts a virus it is really hard to get it back to the way it used to be. Most of the time materials have to be removed from the computers hard drive and tested for viruses and computer worms. Once this process is finished all the files and other materials can be put back on the computers hard drive. After this, the computer must be restored back to it original settings in order to prevent another virus from crashing the system.