Antivirus programs are important component of computer hardware preventive maintenance software. Computer viruses have become increasingly common in recent years and can render a good computer useless.

There are two types of firewalls: hardware firewall and software firewall. A hardware firewall is a physical device that is located in between the internet/network connection and the computer/s on the network. A software firewall is also known as a personal firewall. Software firewalls are installed on individual computers.

It's describe so of the malicious kinds of attacks your Home/Office PC may encounter online.

Keeping your data and activity secure on a computer that is connected to the internet is a multi-layered process. No system is completely secure no matter how hard you attempt to make it be, however, there are a number of ways to increase your protection against system corruption/crash or intrusion.