Linux is similar to other operating systems such as Windows and OS X in many aspects. Linux, like other operating systems, features a graphical user interface and similar versions of software found on other operating systems. Its applications are as numerous as any other operating system, making Linux a popular platform for web hosting, networking, and database management.
Linux, on the other hand, is distinct from other operating systems in a number of respects. It is open-source software, which means that the code that goes into making Linux is free and open to the public to examine, change, and contribute to (for those with technical expertise).
Linus Torvalds, the Linux kernel’s creator, encouraged contributors to keep their contributions free, and because it’s free and runs on PC platforms, it quickly garnered a large following among serious developers. As a result, Linux has become extremely adaptable, allowing users to select essential components that best suit their needs.
Linux has become a key, if not the most important, component of many companies’ and organizations’ enterprise platforms. However, as illustrated by a recent run of hacks, the platform’s ever-increasing popularity has revealed an expanded number of security issues.
Linux is considered the most secure network with many security applications. One of the most reliable is VeePN VPN for Linux application. Every user can try out the trial version, that is absolutely free. Besides, Linux has many external antivirus programs. However, Linux is not 100% secure and there may still be a chance of a viral infection.
Keep reading on as we’ll be mentioning some ways on how to secure Linux operating system and much more!
How Do I Check for Viruses on Linux?
This section will provide you with clear insight into what to do if a virus or malware has infected Linux OS. On Linux servers, there are constant high-level attacks and port scans, and while a correctly set firewall and regular security system updates give an extra layer of protection, you should still keep an eye on the system to see if anyone has gotten in. This will also help to guarantee that your server is free of any malicious software that tries to interrupt its usual operation.
These security scans are made possible by the technologies we mentioned below. These tools can help identify viruses, malware, rootkits, and malicious behaviors. Other than this, you can use these programs to run system scans on a regular basis, such as every night, and receive reports through email.
How to Recognize That Your Linux OS is Infected?
When it comes to security language, people tend to be a little sloppy. However, it’s critical to understand your malware categories since understanding how different types of malware spread is critical to secure Linux operating system.
Viruses: Every malware software revealed in the news is referred to as a computer virus by the majority of the media and normal end-users. Thankfully, the majority of malware programs aren’t viruses. When a victim’s file is executed, a computer virus affects other valid host files (or pointers to them) in such a way that the virus is also executed.
Worms: Worms have existed for much longer than computer viruses, dating back to the days of mainframe computers. In the late 1990s, email made them popular, and for about a decade, computer security professionals were plagued by harmful worms that arrived as message attachments. When one employee opens a wormed email, the entire firm is infected in a matter of minutes.
Trojans: Hackers’ preferred weapon of choice has shifted from computer worms to Trojan malware programs. Trojan horses appear to be legitimate programs, but they contain dangerous code. They’ve been around for a long time, even longer than computer viruses, but they’ve infected more machines than any other sort of malware.
Hybrids and exotic forms: Most malware today is a mix of classic malicious programs, including components of Trojans and worms, as well as the occasional virus. The malware program usually appears to the end-user as a Trojan, but once activated, it acts like a worm, attacking additional victims throughout the network.
Ransomware: Malware that encrypts your linux cybersecurity and holds the data it contains hostage in exchange for a cryptocurrency payment has been a large part of the malware landscape for a few years, and it’s constantly developing. Companies, hospitals, police organizations, and even entire cities have been crippled by ransomware.
Spyware: Spyware is most commonly employed by persons who want to monitor their loved ones’ computer activities. Of course, thieves can employ spyware to track victims’ keystrokes and get access to passwords or intellectual property in targeted attacks.
If you were wondering does Linux need antivirus? Well, now you know it does in order to secure Linux operating system.
What are the Most Common Sources of Malware and Viruses?
Okay, so far, we understand that the linux cybersecurity is not entirely secure. However, what are the course sources that lead to malware and viruses? Well, here are a few of the most common sources of malware and viruses;
Spam emails: Malware authors frequently use deception to get you to download dangerous files. This may be an email with a file attached that says it’s a delivery receipt, a tax rebate, or a ticket invoice. It may state that you must open the attachment in order to receive the things or money.
Infected removal drives: Many worms spread by infecting portable storage devices like USB flash drives or external hard drives. When you connect the infected drive to your PC, the virus may be automatically loaded.
Bundled with other software: Malware might be installed concurrently with other programs you download. This covers software downloaded from third-party websites as well as files exchanged via peer-to-peer networks. Some programs will also install software that Microsoft considers to be possibly undesirable. This can include toolbars or apps that display additional advertisements as you browse the web.
Hacked or compromised webpages: Malware can infiltrate your computer by exploiting known software flaws. A vulnerability is a flaw in your program that allows malware to get access to your computer.
How to Protect a Linux System
Based on the operating system’s strong default permissions structure, linux cybersecurity is deemed good. However, in order to maintain your servers running safely and efficiently, you must follow best practices. Follow these steps to enhance your Linux server’s default setup, whether it’s running Ubuntu, Debian, or another distribution.
Only install required packages: To protect the functionality of your server, you should only install the software that your organization requires.
Disable the root login: Root, a superuser with elevated administrative permissions, is included in most Linux distributions. Leaving root login enabled can pose a security risk and jeopardize the security of small business cloud services hosted on the server, as hackers can use this credential to get access. You must disable this login to improve the security of your server.
Configure 2FA: By requiring a password and a second token before users can log on to the server, two-factor authentication (2FA) considerably improves the security of user access.
Enforce good password hygiene: Users accessing onto their own PCs or SaaS services aren’t the only ones who should practice good password hygiene. Administrators for servers must also guarantee that users are using appropriately secure passwords. They become far more resistant to attacks as a result of this activity.
Server-side antivirus software: While Linux systems are often resistant to viruses, malware, and other forms of cyberattack, antivirus software should be installed on all Linux endpoints, including desktops. Antivirus software will improve the defensive capabilities of any server on which it is installed.
Update regularly or automatically: You should not keep obsolete, unpatched software on your system since they introduce severe vulnerabilities that cybercriminals could exploit. To avoid this issue, make sure your server (or server pool) is updated on a frequent basis.