Linux Security – How Can Your Linux Be Hacked Using Malware, Trojans, Worms, Web Scripts Etc.
First of all, before I continue to speak anything about the topic, let me tell you that I’ve been using Linux for years now and never ever found any virus or virus-effect in any of my Linux systems. There have been debates on the topic of whether Linux is virus-free or not. I have been in the Linux environment for years and heard infinite numbers of Windows users accepting “Linux Is Virus Free”. Many of such Windows users turned to Linux, actually I’m one of them. Although I do use Windows for tutorial purposes several times in a month, for regular, I’m a Linux user.
It won’t be correct to answer it in Yes or No. The question raises big debates that I don’t want to create here. But I will answer it saying that Linux is one of the most secure operating systems available when we only talk about the “system only” and leave everything else that happens inside that system. For example, running vulnerable third-party applications on Linux, users errors, etc. It happens many times that the user is running an outdated application. Running an outdated application can cause users to be tricked by an attacker. When the newer version of an application is released, the developers or company informs all the new stuff that newer version has, including bug fixes and fixed security holes. Attackers take benefit of this information and find people who are still using an outdated and vulnerable application. Attackers/Hackers know exactly what vulnerabilities they need to target and how. Although Linux system is very powerful and Linux developers provide updates frequently to secure users but those third-party applications may not be as good at security as Linux developers are. So the answer is very clear of how Linux is Virus-Free and how not.
Do We Also Have Viruses For Linux?
Having not many viruses for Linux does make Linux users secure but not careless. There are many other ways that Linux can be too infected and one of the major reasons is Windows. Most users whether using Linux server or desktop, they are connected to a Windows computer on a local network to share documents, files, and other stuff. It is very much possible that Linux user accepts a file which is a virus and capable of executing on Linux too. There are viruses that can execute under Windows and Linux both. So users need to be extra careful when receiving files from a Windows machine.
Downloading Applications From Unauthenticated Sources
Linux Viruses – Precautions To Adopt To Secure Linux System
One of the most debated topics is whether Linux needs an antivirus or not. I will mention some of the facts and based on those facts you can decide to install or not install an antivirus in your Linux system. Let’s go ahead and see some fundamentals of antivirus. In simple terms, an antivirus is a set of tools that scans the device to find malicious programs, viruses, trojans and hundreds of other types of threats that can damage one’s system and then trash all the threats out of the system.
Antiviruses companies are working very hard to code definitions of the latest viruses. All these new definitions can recognize the latest and more advanced viruses and delete them as quickly as possible. Now one thing to be noticed here why a Linux system might require an antivirus.
Why Linux Require An Antivirus?
A user needs to decide whether he needs any antivirus or not without going into the debates. First of all, there are not many viruses for the Linux OS so it’s very rare that user system is infected with a “Linux type” virus. And secondly, there are hundreds and thousands of viruses for Windows. For a Linux system alone you might not require any antivirus but if you have Windows files in your Linux so there are higher chances of getting infected with those viruses if they are able to execute on Linux too. Even if those viruses are not executable in Linux then they’ll wait for a Windows system to execute their malicious programs. The latest study of Kaspersky for the first quarter of 2015 shows how Linux system has been used to DDoS. You can read the full report here.
You can decide to use an antivirus scanner (not the full suit) to scan the viruses contained with Windows files. The antivirus scanner will scan all the files and find out the viruses or threats that you can remove manually via terminal. But you’re all free to install a complete suite to protect from Windows viruses. Below are two of the popular antivirus scanners that you can use for free. Another popular antivirus also provides free scanners for Linux. Google for any other antivirus if you want.
Comodo Antivirus For Linux
Now so many people will take it the wrong way to install any antivirus for Linux but here is an important thing to be understood. There are for sure a few viruses for Linux and most of them are not of high quality and destructive. But there are still Windows viruses that can spread across the system if executable on Linux. Even if viruses cannot execute in Linux they will still spread when the Linux user transfers data to a Windows system. So to find the threats and delete them, we Linux users can install antivirus scanner. Those who don’t store Windows files or do not connect with Windows machines they might skip installing antivirus scanner but still, they need to be careful. Finally, tell us your point of view or Linux experience with us and share with us any story where any user had virus effects in Linux.