The opponents have loopholes and cyber-infrastructure, enterprise networks, universities, government agencies, organizations and networks of PCs, more than ever used before. People with bad intentions, if they are pirates, terrorist money laundering for the network of specialized information or just to improve their skills in online crime practice became more aggressive on the Internet, in particular viruses. The virus is a program that is designed to be infecting computer systems and the distribution network between multiple computers as possible. Some of the risks of viruses, the files from the system, the data access system registry key or a denial of service attacks, which have completely closed authorized users can delete information, disk, database server, access, etc. Infected by all the things that go wrong with your computer with the virus, can infect one particular worst.Viruses attachments and instant messaging are very popular and are crooks. By sending an e-mail viruses, the attacker is more open to the recipient the attachment, the e-mail. Viruses can be hidden in attachments, such as audio and video files, images, documents, maps and much more. In today’s world, e-mail address is essential for effective communication with friends, colleagues and business relationships with consumers. People e-mail to their friends who live near or around the world. Colleagues should work via e-mail communication mechanism / response at work. Business to Consumer e-mail for more information about products and services utilizing the company to consumers via e-mail newsletters, coupons and other advertising, etc. There is a huge market for those who e-mail was that she always there to use. More and more people via e-mail services, and a couple of years for personal and business previously.It said he understood that the use of e-mails from people who through years of hard work, personal and business. Another reason why e-mail viruses already in the last few years can be used to develop capabilities to attack by malicious users. Hackers, enemies, the evil, the same equipment, and get all the others. Advanced technology can teach enormously in recent years and many valuable online resources, people to create viruses. Then there are the same bad actors, the coding, networks and other means that users have now been completed to benefit from ethics. The question everyone wants to know is: How do I prevent viruses? Honestly not sure how to completely remove all the viruses that are surfing. There are several ways to protect against most viruses, and reduces the risk of infection from him. Above all, a good antivirus blocks viruses, scan messages for viruses and scan your system for viruses and remove the quarantine. There are several good anti-virus tools that are freely available and for sale. One of the best tools for the free AVG anti-virus and Windows Security Essentials can be downloaded from the website. Panda is another good anti-virus software to sell. Spam, spyware blocking, anti-phishing tools and other services need to be considered if the protection against viruses and worms, phishing and Trojan horses. Remember always your antivirus up to date, a complete virus scan regularly and be very careful when opening e-mail .