This might slow down the processing speed of your computer, delete important files and access personal information. Unauthorized software includes viruses, keyloggers, trojans etc. It is software that helps to protect the computer from any unauthorized code or software that creates a threat to the system. It makes you aware if there are any unauthorized efforts to use your system.Īntivirus is one other means to protect the computer. If you are using a system at home, turn on the firewall permanently. It creates a barrier between the computer and any unauthorized program trying to come in through the Internet. A firewall is the first step to provide security to the computer. Each serves similar, but different purposes. There are of two types of firewalls: a software firewall and hardware firewall.
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