Along with a firewall, software is the next most important block against hackers, viruses, etc. The most commonly used items today include: anti-trojan software and anti-virus software.
Anti-Trojan software reveals spys and hackers that are invading your computer privacy. A trojan is a program that is made up of two parts, the client and the server. Once you activate the server(clicking on it) it hides itself in your computer and opens all ports allowing hackers to access your computer. Some trojans steals passwords and send them to hackers through email. Also, some trojans allow the hacker to get into the hard drive which is very dangerous. But, the most dangerous and complicated trojan is the remote administration trojan, through this, the hacker can do about anything-seeing everything you type, all your passwords, dial up accounts, and pretty much anything they want.
Anti-Virus Software finds and deletes viruses from our computer files, and most anti-virus software will update itself for new viruses. Even if you have anti-virus software you should keep back-up files of your important data. Click here for more Anti-Virus information.