Sobig-F has become the largest virus this year and is ranked as one of the most deadly viruses ever. This worm, along with the second virus, Blaster-A, accounted for more than a third of the total number of malicious programs detected in the past 12 months. The first seven months of the year did not have any major problems. However, all of them immediately changed in August when three consecutive programs of destruction appeared and attacked with great intensity. Home users and businesses are baffled by the appearance of three worms Blaster, Nachi and Sobig-F. August is considered to be the "hottest" month for virus outbreaks and outbreaks. Three viruses attacked this month, thus topping the Top 10 sabotage programs this year. Said Sobig-F as the biggest virus because of the enormous amount of e-mail that it has created. At the time of its release, security software firm Sophos recorded more than 400,000 copies a day. All viruses in the Top Ten this year are targeted at computers running Windows. Unlike the other eight viruses on the list, Sobig-F and Blaster-A did not exploit security flaws in Microsoft's Outlook e-mail tool, but instead attacked through vulnerabilities. In Windows NT, 2000, XP and Server 2002 network file transfer modes. The year 2003 also saw widespread use of viruses to deceive users, making them more aggressive, such as the Palyh virus pretending to be a Microsoft technical support message, or Gibe-F. and Dumaru disguised the security updates of the software giant. This year also saw an increase in malicious programs designed by criminals to steal users' personal information to exploit online accounts or conduct other commercial frauds. The Mimail-J virus, which mimics a PayPal online payment service, misleads customers with credit card information, or the Bugbear virus, which attempts to steal information. Financial based on the characters that the user typed on the keyboard when dealing online. Graham Cluley, an expert with security software firm Sophos, said in an optimistic statement: "Despite the 86,000 virus definitions plus about 100 new viruses, Everyday, the fight against destructive software is not hopeless. Businesses increasingly raise vigilance and actively invest in defensive tools. In general, we are still winning against hackers. " List of 10 viruses of 2003 (rate of notification Sophos received) 1) Sobig-F (19.9%) 2) Blaster-A (15.1%) 3) Nachi-A (8.4%) 4) Gibe-F (7.2%) 5) Dumaru-A (6.1%) 6) Sober-A (5.8%) 7) Mimail-A (4.8%) 8) Bugbear-B (3.1%) 9) Sobig-E (2.9%) 10) Klez-H (1.6%) Other viruses: 25.1%
