Who is challenging Linux security?

In the operating system, if Windows is described with loopholes, the most common adjective about Linux may be "impeccable. When people are increasingly keen on finding Microsoft's operating system and software vulnerabilities, making Windows an increasingly popular target for hackers, but it often ignores the second most popular Linux operating system in the world.

In fact, in 1996, the first virus, Staog, appeared on the Linux platform. It is said that the virus was written by a hacker organization called vglad in Australia in assembly language (this organization left a brilliant mark on the glorious book of viruses, the first virus program Boza in Windows 95 is the work of the Organization ). It only infects binary files and tries to get root permissions in three ways, but it can still be regarded as a virus demo sample. Its meaning is only to prove to those Linux enthusiasts: linux is not indestructible. It is also vulnerable to virus attacks, but it is low due to the improvement of the Linux operating system design.

The second virus that appears on the Linux operating system is the Bliss virus. It is an experimental product. It is only a virus that is accidentally released in the experiment, and it is immune, it is not too dangerous for the system.

It was not until the emergence of Ramen that people had doubts about the impeccable security of the Linux operating system. The Ramen virus can be automatically transmitted without human intervention, which is very similar to the Morris worm, which became popular in 1988. It only infected Red Hat 6.2 and 7.0 servers using the anonymous FTP service, and infected the system through two common vulnerabilities: RPC. statd and wu-FTP. Like more worms on Windows, the virus does not infect files, but consumes network bandwidth during scanning, making normal resource requests unable to reach the service.

In fact, attacking the computer's Ramen Virus by using security vulnerabilities also helps Linux network administrators fix vulnerabilities in a timely manner, because it also exposes the vulnerability during the attack.

There is also a virus written in shell scripting language. We can find many analysis articles about this virus on the Internet, but most of them are rendering its severity. The Linux system file contains many script files ending with. sh. A very simple shell virus can infect all the script files in the system.

Most importantly, it is very easy to write. A shell virus with dozens of rows is very simple for "hackers" who are eager to become famous on the Internet and learn little about it. That is to say, it is the most vulnerable to shell viruses that are easily exploited by people who are suspicious.

Many articles have mentioned that apart from the inherent design of Linux, the system was strong enough. Most of the users who used the Linux operating system in the early days were professionals and did a great job in the inheritance of security awareness experience, this gives Linux good humanistic conditions to protect itself. The author believes that being young is also an important reason for Linux to be immune from irresponsible hacker attacks. However, as Linux users begin to become "mixed" and the industry continues to give them high comments, new security threats also emerge.

Linux. Lion, a virus that has made Linux security more popular, is the "Lion" worm we often see on Linux forums in China. If the first worm Ramen in Linux is not enough to shine in the history of the virus, the Lion virus now implements this "Desire" for it ".

The Lion virus Ramen does not infect the Windows operating system, but it has a particularly dangerous function that can send the password and configuration file of the infected computer to a mailbox of China.com by EMAIL. What makes it more difficult to deal with the Ramen virus is that hackers do not need to use security vulnerabilities when attacking the system with passwords and configuration files, making it more difficult to prevent attacks.

Compared with the various viruses raging on the Windows platform, these viruses cannot be regarded as very evil. All they do is to try to challenge the Security myth of Linux, just warning users who believe that Linux is absolutely secure: Linux is not safe.

Of course, there are far more viruses in the Linux operating system, Unux. svat, BoxPoison, and other viruses have also caused different degrees of harm to Linux users. As the number of Linux users increases, more and more Linux systems are connected to the Internet, this greatly increases the possibility of system intrusion. It is foreseeable that more viruses will appear on Linux. To protect Linux, please start as soon as possible.