The article will first address the various viruses, spyware and other threats that pose a significant risk to PC user data, and teach you how to check if your PC is secure. Of course, we will also teach you how to better protect it. Are
online security problem was magnified by the media and security vendors? I have never installed anti-virus software, but my computer has been used very well. Why do you have to install an Internet firewall? I don't think there are any hackers interested in the data in my computer.
point of view it is a lot more real idea of ordinary computer users, but this "A World Without Thieves" type of naive idea of great danger, in fact, hackers have a lot of motivation to invade your Machines, for example, free use of your PC's idle computing power is one of the simplest reasons. Of course, they can do much more than this. Attackers can use your computer and other people's computers to build a huge destructive network to spread viruses or spam. Other attackers like to collect your personal information for further sabotage (such as stealing your credit card). It's no exaggeration to run dozens of viruses and hundreds of spyware on a computer that you think is safe, but the reality we face every day.
In the next few pages, we will talk about some of the major trends that have recently emerged in the PC security arena, and then we will give you some valuable tips to help you put on Windows. A body armor that is effective against hackers.
everyone has
danger dangerous as long as computers have been attacked online, but whether it is for home users and business users, are undervalued against these risks. A survey report from the National Cyber Security Alliance (NCSA) (www.staysafeonline.infonewssafety_study_v04.pdf) indicates that 84% of respondents will store sensitive data on their computers; 72% of online users These sensitive data will be used online; 77% of online users think their computers are safe but they don't actually take too much protection; nearly two-thirds of respondents don't update anti-virus software in time or simply Not installed; 67% of respondents did not use the Internet firewall, and nearly 70% of the users who installed the firewall failed to configure properly (for example, there are still several open ports); 12% of respondents While using WLAN products, almost no one has enabled WPA (Wi-Fi Protected Access) encryption option, 62% of WLAN users use less secure WEP (Wireless Encryption Protocol) encryption, and the remaining WLAN users have not taken any Safeguard.
in the survey, every five computers have been infected with a virus (19%), and even in some computers have more than 200 kinds of viruses. The problem with spyware and adware is even more alarming. More than 80% of computers have been harassed by them. On average, each computer has been attacked by 93 malicious tools, and some computers have even suffered more than 1,000. Attack by malicious tools.
In November 2004 alone, 1379 new viruses were produced, and the number of newly generated viruses in the first half of 2004 was 4,500, which is nearly five times higher than in 2003. As of the end of 2004, approximately 98,000 viruses were still circulating, and by January 2005 this figure had exceeded 100,000.
This article will first address the various viruses, spyware and other threats that pose a significant risk to PC user data, and teach you how to check if your PC is safe. Of course, we will also teach you how to better protect it. Are
online security problem was magnified by the media and security vendors? I have never installed anti-virus software, but my computer has been used very well. Why do you have to install an Internet firewall? I don't think there are any hackers interested in the data in my computer.
point of view it is a lot more real idea of ordinary computer users, but this "A World Without Thieves" type of naive idea of great danger, in fact, hackers have a lot of motivation to invade your Machines, for example, free use of your PC's idle computing power is one of the simplest reasons. Of course, they can do much more than this. Attackers can use your computer and other people's computers to build a huge destructive network to spread viruses or spam. Other attackers like to collect your personal information for further sabotage (such as stealing your credit card). It's no exaggeration to run dozens of viruses and hundreds of spyware on a computer that you think is safe, but the reality we face every day.
In the next few pages, we will talk about some of the major trends that have recently emerged in the PC security arena, and then we will give you some valuable tips to help you put on Windows. A body armor that is effective against hackers.
everyone has
danger dangerous as long as computers have been attacked online, but whether it is for home users and business users, are undervalued against these risks. A survey report from the National Cyber Security Alliance (NCSA) (www.staysafeonline.infonewssafety_study_v04.pdf) indicates that 84% of respondents will store sensitive data on their computers; 72% of online users These sensitive data will be used online; 77% of online users think their computers are safe but they don't actually take too much protection; nearly two-thirds of respondents don't update anti-virus software in time or simply Not installed; 67% of respondents did not use the Internet firewall, and nearly 70% of the users who installed the firewall failed to configure properly (for example, there are still several open ports); 12% of respondents While using WLAN products, almost no one has enabled WPA (Wi-Fi Protected Access) encryption option, 62% of WLAN users use less secure WEP (Wireless Encryption Protocol) encryption, and the remaining WLAN users have not taken any Safeguard.
in the survey, every five computers have been infected with a virus (19%), and even in some computers have more than 200 kinds of viruses. The problem with spyware and adware is even more alarming. More than 80% of computers have been harassed by them. On average, each computer has been attacked by 93 malicious tools, and some computers have even suffered more than 1,000. Attack by malicious tools.
In November 2004 alone, 1379 new viruses were produced, and the number of newly generated viruses in the first half of 2004 was 4,500, which is nearly five times higher than in 2003. As of the end of 2004, approximately 98,000 viruses were still circulating, and by January 2005 this figure had exceeded 100,000.
endless plugging security holes
security vulnerability exists not only in the operating system, browser, application there are loopholes, security flaws were found from the first to exploit this vulnerability Attacks occur, and the time interval between them is getting shorter and shorter. Currently, the average time interval is about 6 days. However, specific to a security vulnerability, the time left for users to make up for the vulnerability may be even more urgent, and some vulnerabilities may appear corresponding attacks on the day of discovery. And viruses that attack security vulnerabilities through the Internet or the Internet may spread around the world in a matter of seconds, such as the Mydoom-AH virus.
in 2004, there are about 3,000 software vulnerabilities are discovered. For most users, a small percentage of the vulnerabilities are unlikely to be attacked. But according to Symantec security experts' statistics on 1,237 security vulnerabilities discovered in the first half of 2004, 70% of them are vulnerable to malicious exploitation, and 96% of security vulnerabilities can be exploited by more experienced hackers. Undoubtedly, most security vulnerabilities appear in unpatched Windows systems and Internet Explorer browsers. PCs controlled by malicious programs have become quite common, and most users will not notice that when your Internet speed is slow, you can easily attribute it to a server load, and it is likely that you The private data has been stolen unconsciously.
Fighting for survival
There was also a very interesting situation in 2004, and virus writers seemed to have spent a lot of energy fighting each other. Some worms and viruses contain code that removes other malicious programs, such as Worm.Netsky, which removes Mydoom and Bagle viruses, while writers who are cleaned of a virus write virus variants to compete. The virus variety has increased dramatically.
case of virus writers is to report and expose also become common in 2004, there are several virus writers were arrested, they were identified with the Sasser, Netsky, Agobot, Phatbot and Lovesan and other related viruses.
spam dearly
spam flooding has become a vexing problem, they have not only the support of advertising, but also to the spread of worms, viruses and Trojan horses.
According to E-mail security solution vendor MXLogic (www.mxlogic.com), about 93% of e-mails are spam, and another vendor, Frontbridge (www.frontbridge.com) The survey results show that the ratio is 82%. Although the data of the two security solution vendors are somewhat exaggerated (after all, they have the motivation to sell their products), the actual situation is really worrying. I think 70% of e-mails are spam or more relevant. of. In 2005, 35 million e-mails are expected to be sent, and 24.5 million of them are spam, and may contain malicious code.
Experts estimate that due to the decline in productivity caused by spam results in economic losses in 2004 reached $ 20 billion, for a 500-employee company, the deal brings an annual loss of spam Will be as high as $4 million.
Another trend that emerged in 2004 was the increase in “forgery traps” that would entice you to visit fake websites (they look very similar to regular websites). Class websites often let you confirm bank account information, such as asking you to enter an account number and password, and then you will find that the money in your account is inexplicably spent. About 1.4 million online users have fallen into this "falsification trap", causing direct economic losses for banks and credit card companies as high as $1.2 billion, and the economic losses of individual users may be in this order of magnitude.
According to the Anti-Phishing Working Group (www.antiphishing.org) survey, as of October 2004, there have been 1,142 fake online websites, which are growing at a rate of 25% per month. The lifetime of each fake website averages 6 days.
What will happen in the future?
future situation will happen then? Security experts agree that security issues will become more interesting in 2005, and the following attacks will continue to grow:
● Attacks launched through Web-based applications
● Automatic Mass mailing, spam, Trojan horse and DDOS attacks
● Virus attacks with automatic defense mechanism
● Attacks against security tools (such as anti-virus software, Internet firewalls, routers) BR>
● Smarter and larger automated botnets
● More hidden attacks
● Social engineering attacks
The so-called "one foot high, one high in the magic", the future may