See if you have these computer security errors

Many people complain that their computers have been protected, but they are still attacked by viruses, Trojans, and hackers. In fact, this principle is very simple, just like we have locked the door, but can not guarantee that things are not stolen. In actual use, due to the lack of computer security knowledge, some computer users have a lot of security misunderstandings, which will make the originally unsafe computer think safe, and thus relax the vigilance. In order to avoid the spread of this situation, the author and everyone to find out these security misunderstandings.

Misunderstanding 1. The computer in the LAN is very secure

Misunderstanding: Because the LAN is shared by the proxy, it is not exposed on the Internet, but hidden behind the proxy server. All attacks All are for proxy servers, not related to computers on the intranet.

Positive solution: Although hidden behind the proxy server, it can certainly have a certain degree of security. But when you browse malicious websites, run bundled Trojan files, or download files containing viruses, these service proxy servers can't interfere, and your computer is exposed.

Misunderstanding 2, dial-up Internet without fixed IP is very safe

Misunderstanding: Many users are now broadband dial-up Internet access. Since the IP address obtained each time for broadband dialing is not fixed, and because the connection is established on the Internet, it is done by IP. This way there is no fixed IP address, which means that the intruder can't find himself, so his computer is safe.

Positive solution: Dynamic IP is not fixed every minute. You must know that the IP address you used is fixed before the same disconnect, so that the other party knows your IP, if not Security, the other party can complete the invasion in a few minutes. Secondly, if you are planted a rebounding Trojan, then no matter how your IP address changes, your IP change information will be automatically sent to the intruder, and even will automatically contact the intruder, regardless of your IP address.

Misunderstanding 3, installed anti-virus software is safe

Misunderstanding: I have installed genuine anti-virus software, under the protection of anti-virus software, never have to worry about security issues.

Positive solution: The most important thing about anti-virus software is the killing effect on viruses, but the prevention of spyware is minimal. Secondly, the anti-virus software installed has not been updated to the latest virus database in time, and it is also impossible to prevent some new viruses or old virus variants. In addition, anti-virus software is basically passive defense, that is, after the new virus comes out, it will be studied for its killing method. This will take some time, and the virus may have invaded your computer during this period of time.

Misunderstanding 4, the computer has no important content, not afraid of attack

Misunderstanding: My computer is only used to play games, and it has no important role, and there is no need to keep confidential information, even if it is Attacking, it will not cause any loss to me.

Positive solution: Although the computer has no important content, but the virus makes your system slow down will always affect your use. Let your system crash and reload it. If it is CIH, it is extremely harmful. The virus, your hardware may be damaged.

In addition, your computer has no important content, but can you guarantee that your computer is not controlled by others, acting as a "meat machine" to attack others and become an accomplice of hackers? I am afraid that you will not be a hacker but you.

Misunderstanding 5, it is safe to patch it

Misunderstanding: My computer can update various patches in time so that hackers will not invade my computer.

Positive solution: Like the virus, it is necessary to detect the vulnerability until the vulnerability is modified. This period others can still use this vulnerability to attack you. A patch is always targeted at a vulnerability. You patched it only to show that the vulnerability will not be exploited, but other potential vulnerabilities are difficult to guarantee.

Misunderstanding 6. Online security can be safe and worry-free

Misunderstanding: I have used the secure online test provided by the security vendor website. The test results prove that my computer is very safe, so I don't have to be safe. Put more effort into it.

Positive Solution: Complete security testing is not accurately determined by such simple online testing. Because online detection is only the security status of the checked gateway, if it is inside the LAN, then this kind of check is more security of the gateway, not the security of the machine.

Misunderstanding seven, no floppy disk, no virus

Misunderstanding: In order to prevent the spread of the virus, I am not used for floppy disks and USB flash drives, even if they are used, they will be checked for non-toxicity. use.

Positive solution: This statement is mainly applicable to the environment where the network is not developed. In the early days of IT development, because the network was still not popular, the file exchange was more through the floppy disk, so most users know that to be safe, do not open the floppy disk of unknown origin. However, the development of the network to this day, the use of network to spread the virus has long been a major way of virus transmission.

Misunderstanding VIII, important files are read-only will not be infected

Misunderstanding: the virus is because the file is modified, so I just set the important data as read-only attribute So the virus can't be modified, and the file is of course safe.

Positive solution: You can set the file to read-only. Can the virus not call the system command to modify its properties? Moreover, if you perform delete, format, etc., the file attributes are ignored. Formatting viruses is an extremely important manifestation of some virus hazards. If it is a Trojan, then not to mention.