This Internet security tools, Norton Internet Security, and in particular with a variety of intelligent functions that give you additional protection against unknown threats or not by the use of algorithms for monitoring behavior. But many average users who never stray far from the main sites are the most features of Internet security software is not – it is like buying a BMW to drive only the church on Sunday.

For example, security tools from McAfee Internet is still heavy and clumsy, but the new version, not to find the right balance between functionality, usability and performance.

Furthermore, many applications do not play well with other security software you already installed on your PC. These are third-party antivirus, anti spyware and anti-adware software that you get from other applications, possibly the best so far and there is no reason why we should stop with them.

Therefore, I recommend taking a look at the features first, before any purchase is – if you decide you do not need a BMW to drive to church once a week, a lighter, easier with Internet security software such as ZoneAlarm Internet Security 7, may be a better choice.

Today, there are some types of risks that can affect the security of your PC while you surf the Internet and download the installation software: viruses, Trojans, spyware, worms and rootkits. Ing programs can be installed on your computer when downloading software from untrusted sources or by attending the event is often referred to as phishing sites.

In particular, the spread of malware is often through fake e-mails to everyone in your address book. But not only pirated copies of software may contain dangerous code – viruses often unsuspecting people, including some Sony music CDs accidentally causing virus.

All antivirus software is now primarily to deal with these threats by scanning the downloaded files, running applications, the scanning of incoming e-mails, attachments, and some can even scan blocking incoming instant messages and remove malware. Security researchers say that the antivirus software plays an essential role, but is no longer sufficient, since it is dangerous, every day to sites on the Internet, they can surf SMART Technology, an attack on your PC.

Some of the malware that the sensitive information such as login information, passwords, personal information such as credit card numbers. Keep inventing new ways for hackers to get information from your computer keyboard during the abduction or intrusion type business or an online bank.

While the online identity theft has become a growing problem, protecting your computer against these threats is essential. Each piece of information is stored on your computer or on the Internet can send to cyber criminals. This is the reason why the strong interest that the needs of security – antivirus, firewall and anti-spyware software.

The research shows that most of the safety and privacy, adware, spyware and phishing. Security engineers such threats are among the fastest growing and threats to personal security of the PC over the Internet today. The biggest problem is that these applications are small programs that can be transported over the Internet and installed on the computer of the victim in seconds and can not be detected without an anti-malware program works in the background.

Some spyware and adware can be moderated is not harmful, to gather information about the sites you visit or what you do while you are on your PC, but there is still a very dangerous spyware, which can be used to example, on your computer to a network of infected machines – a botnet – cyber criminals often that for the launch DDoS (Distributed Denial of Service) attacks.

An article called “State of the Network 2006″, published in September 2006 by Consumer Reports cites alarming statistics about the damage caused by viruses, spywae and advare to computers owned by individuals and businesses. The magazine reported that nearly one million people replaced their computers over the past six months because of spyware infections.

What is a virus?

A virus is a program that intentionally parasites to a computer without the user’s permission or knowledge. The word is a parasitic virus, because it is based on files or boot sectors and replicates that its spread. Although some viruses are not much more than copy themselves, others can cause serious damage or affect the performance of the system and program. A virus should never be assumed harmless and left in a system.

Types of Viruses

Viruses are, how they infect computer systems:

1) Program: Executable program files such as those ending with. COM,. Exe,. OVL,. Drv,. Sys. Bin
2) Boot: Boot Record, Master Boot, fat and partition table.
3) Multi: Both program and boot infector.

What is Trojan horse?

Apart from the fact that a large wooden horse in the Trojan war 2500 years ago (and more recently by Brad Pitt), a Trojan or Trojan Horse is a program that is harmless, or harmless, but there is another evil role. In general it is a trojan in a program in the computer from an external source – (eg diskette, CD, Internet download, e-mail infected). Trojans can sometimes be dangerous. For example, a program may be a demonstration of computer game, but enjoy the game, you’re welcome to format the hard disk or e-mail to all the porn sites in your address book, e-mail.

The Trojans are also known as a “backdoor” or “trap door” secretly in a computer operating system information. An example is a program that pretends to the system log-in program (as in Windows NT / XP or Linux). When a user tries to unsuspecting used to access the system, the Trojans captured the user name and password. Then, an error in the logon attempt, the reality and exit the program. The user can set the system the next time, but at this time also Trojan enough information to log into the system.

Example Trojans

Notroj. The Trojan horse, which is a protection against Trojans. It is actually a time bomb that will eliminate the hard drive for more than 70 percent complete.

PWSteal.Refest a Trojan horse is installed to ensure that a BHO (Browser Helper Object) for Internet Explorer and steals online banking information when you register in Web forms.

PWSteal.Likmet.AA Trojan horse that has a fake login window of MSN Messenger and steals the password.

Run.me. This is a graphics program, it plays the Star Spangled Banner and the American flag, while the worms its way into the hard drive and delete the data about them.

What is Worm?

A worm is a self-propagating program that pushes its way through a system or network (eg Internet), often cause damage. Is it not necessary, a host program to activate it. Someone has to create a worm into the network of interconnected computers that can send messages to each other and the information and exchange programs. An example is a local area network in which each team has its own files, programs and operating systems, such as hard disks are in a university or a corporate environment.

Example worms

Wake Worm. A worm that comes over the network to an output (one with a modem), and provides the test calls to a list of users.

Worm Watcher. A special program that automatically steps to limit the size of a worm, or turn it off, it grows over a certain limit. The worm also remain vigilant record changes in the registry