{"id":28,"date":"2025-07-07T12:17:00","date_gmt":"2025-07-07T12:17:00","guid":{"rendered":"https:\/\/server.ua\/en\/blog\/?p=28"},"modified":"2025-07-21T14:03:19","modified_gmt":"2025-07-21T14:03:19","slug":"linux-vps-virus-scan-tools-and-tips","status":"publish","type":"post","link":"https:\/\/server.ua\/en\/blog\/linux-vps-virus-scan-tools-and-tips","title":{"rendered":"Linux VPS Virus Scan &#8211; Tools and Tips"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXftnX1E_FsvoNrDBnDDrJ7gsyf5HqlXi3uMEVRWl8dxI75xd76MW0FXTWCdnNG105ynyL0B19Nqth00M1jsrFWk939VCMJ5KIMRfv6ZsGaJXnN4w5ROAhatpRWjHQEgzEZApMO8nw?key=GsqERPpeLJS7jJk_3c_bRg\" alt=\"\"\/><\/figure>\n\n\n\n<p>Linux VPS is considered a safer alternative to Windows servers, but that doesn\u2019t mean the risk of malware infection is zero. Even the most secure systems can be vulnerable if not monitored regularly or if unreliable software is used.<\/p>\n\n\n\n<p>In this article, we\u2019ll explain how to check your Linux VPS for viruse<strong>s<\/strong>, which tools are best suited for the job, and what to do to avoid future infections. We\u2019ll also share practical tips to help keep your server secure in the long run.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why You Should Scan Your VPS for Malware<\/strong><\/h2>\n\n\n\n<p>Linux servers are often chosen for their stability, open-source code, and strong community support. But even these servers can:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fall victim to rootkits or backdoors<\/li>\n\n\n\n<li>Become part of a botnet<\/li>\n\n\n\n<li>Be used for unauthorized cryptocurrency mining<\/li>\n\n\n\n<li>Send spam or participate in DDoS attacks<\/li>\n<\/ul>\n\n\n\n<p>Main reasons for infection:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Unpatched system or CMS vulnerabilities (e.g., outdated WordPress versions)<\/li>\n\n\n\n<li>Lack of firewall or basic security measures<\/li>\n\n\n\n<li>Weak passwords or default accounts<\/li>\n\n\n\n<li>Scripts downloaded from questionable sources<\/li>\n<\/ul>\n\n\n\n<p>Even if your server <em>seems<\/em> clean, regularly scanning your VPS is a must, especially if you work with customer data.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Signs Your Linux VPS May Be Infected<\/strong><\/h2>\n\n\n\n<p>Here are some red flags that your system may be compromised:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Unusual CPU or RAM load<\/li>\n\n\n\n<li>Suspicious network activity (e.g., constant connections to foreign IPs)<\/li>\n\n\n\n<li>New user accounts you didn\u2019t create<\/li>\n\n\n\n<li>Changes in system configs or auto-start settings<\/li>\n\n\n\n<li>Unknown scripts or executables in \/tmp or \/var<\/li>\n<\/ul>\n\n\n\n<p>These are signs that your server needs an urgent scan.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Best Tools to Scan a Linux VPS for Viruses<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. ClamAV \u2014 Basic Open-Source Antivirus<\/strong><\/h3>\n\n\n\n<p>One of the most popular antivirus solutions for Linux.<\/p>\n\n\n\n<p><strong>Features:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Scans system files and directories<\/li>\n\n\n\n<li>Supports scheduled scans via cron<\/li>\n\n\n\n<li>Signature database updates with freshclam<\/li>\n<\/ul>\n\n\n\n<p><strong>Install on Ubuntu:<\/strong><\/p>\n\n\n\n<p>sudo apt update&nbsp;&nbsp;<\/p>\n\n\n\n<p>sudo apt install clamav clamav-daemon&nbsp;&nbsp;<\/p>\n\n\n\n<p>sudo freshclam<\/p>\n\n\n\n<p><strong>Scan:<\/strong><\/p>\n\n\n\n<p>clamscan -r \/home<\/p>\n\n\n\n<p>You can also schedule weekly automatic scans.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Chkrootkit \u2014 Rootkit Scanner<\/strong><\/h3>\n\n\n\n<p>This tool specializes in detecting hidden threats that may evade typical antivirus tools.<\/p>\n\n\n\n<p><strong>Install:<\/strong><\/p>\n\n\n\n<p>sudo apt install chkrootkit<\/p>\n\n\n\n<p><strong>Scan:<\/strong><\/p>\n\n\n\n<p>sudo chkrootkit<\/p>\n\n\n\n<p>Results appear in the terminal \u2014 look for lines marked &#8220;INFECTED.&#8221;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Lynis \u2014 Security Auditing Tool<\/strong><\/h3>\n\n\n\n<p>More than just antivirus \u2014 Lynis is a full-blown security auditor for system configurations.<\/p>\n\n\n\n<p><strong>Benefits:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Assesses your system&#8217;s security level<\/li>\n\n\n\n<li>Reviews SSH, sudo, and cron settings<\/li>\n\n\n\n<li>Provides tips to enhance protection<\/li>\n<\/ul>\n\n\n\n<p><strong>Install:<\/strong><\/p>\n\n\n\n<p>sudo apt install lynis<\/p>\n\n\n\n<p><strong>Audit:<\/strong><\/p>\n\n\n\n<p>sudo lynis audit system<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. Rkhunter \u2014 In-Depth Rootkit Detection<\/strong><\/h3>\n\n\n\n<p>Another powerful rootkit scanner with different detection methods and more customization.<\/p>\n\n\n\n<p><strong>Install and run:<\/strong><\/p>\n\n\n\n<p>sudo apt install rkhunter&nbsp;&nbsp;<\/p>\n\n\n\n<p>sudo rkhunter &#8211;update&nbsp;&nbsp;<\/p>\n\n\n\n<p>sudo rkhunter &#8211;check<\/p>\n\n\n\n<p>Add it to cron for daily scans.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Extra Linux VPS Security Tips<\/strong><\/h2>\n\n\n\n<p>Keep your system up to date \u2014 apt update &amp;&amp; apt upgrade<\/p>\n\n\n\n<p>Configure a firewall \u2014 use ufw or iptables to block unwanted ports<\/p>\n\n\n\n<p>Change the default SSH port and disable password login<\/p>\n\n\n\n<p>Use SSL certificates to encrypt traffic \u2014 this secures your websites. You can order one at server.ua<\/p>\n\n\n\n<p>Make regular backups \u2014 best automated<\/p>\n\n\n\n<p>Monitor resource usage \u2014 tools like htop, iftop, vnstat can help<\/p>\n\n\n\n<p>Disable root SSH access, use sudo<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What to Do If You Find Malware on Your Server<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Isolate the VPS \u2014 shut down all connections except SSH (or temporarily disable networking)<\/li>\n\n\n\n<li>Remove infected files \u2014 manually or with antivirus tools<\/li>\n\n\n\n<li>Check all cron jobs and startup scripts (~\/.bashrc, ~\/.profile, systemd units)<\/li>\n\n\n\n<li>Change all passwords: root, sudo, control panels, FTP, etc.<\/li>\n\n\n\n<li>Reinstall the VPS if you\u2019re unsure the threat is fully removed<\/li>\n\n\n\n<li>Restore from a clean backup, if available<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Who Should Regularly Audit Their VPS?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Developers hosting apps on Linux servers<\/li>\n\n\n\n<li>Companies renting VPS to handle customer data<\/li>\n\n\n\n<li>Online business owners who value stability and reputation<\/li>\n<\/ul>\n\n\n\n<p>At Server.ua, you can rent a <a href=\"https:\/\/server.ua\/en\/vps\">VPS<\/a> with pre-configured security tools, backups, and 24\/7 support.<\/p>\n\n\n\n<p>For colocating your own hardware, check out our <a href=\"https:\/\/server.ua\/en\/colocation\">colocation<\/a> service in a professional data center.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Linux VPS security isn\u2019t a one-time setup \u2014 it\u2019s an ongoing process. Regular antivirus scans, system updates, firewall configuration, and backups should become your routine.<\/p>\n\n\n\n<p>With simple tools like ClamAV, Lynis, and Rkhunter, you can catch threats early and avoid major damage.<\/p>\n\n\n\n<p>Work with a reliable provider like<a href=\"https:\/\/server.ua\/en\"> Server.ua<\/a>, and your VPS will be both high-performing and 100% secure.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux VPS is considered a safer alternative to Windows servers, but that doesn\u2019t mean the risk of malware infection is zero. Even the most secure systems can be vulnerable if not monitored regularly or if unreliable software is used. In this article, we\u2019ll explain how to check your Linux VPS for viruses, which tools are [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,11],"tags":[30,28,29],"class_list":["post-28","post","type-post","status-publish","format-standard","hentry","category-security","category-vps","tag-linux-antivirus-tools","tag-linux-vps-security","tag-virus-scan"],"_links":{"self":[{"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/posts\/28","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/comments?post=28"}],"version-history":[{"count":2,"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/posts\/28\/revisions"}],"predecessor-version":[{"id":46,"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/posts\/28\/revisions\/46"}],"wp:attachment":[{"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/media?parent=28"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/categories?post=28"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.ua\/en\/blog\/wp-json\/wp\/v2\/tags?post=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}