Linux Threat Report H1′ 2021: Key Security Takeaways<\/title> <link href=\"https:\/\/fonts.googleapis.com\/css?family=Open+Sans:300,300i,400,400i,600\" rel=\"stylesheet\">\n<link href=\"\/\/customer.cludo.com\/css\/296\/1798\/cludo-search.min.css\" type=\"text\/css\" rel=\"stylesheet\"> <link rel=\"stylesheet\" href=\"\/etc.clientlibs\/trendresearch\/clientlibs\/clientlib-trendresearch.min.css\" type=\"text\/css\"> <meta property=\"og:url\" content=\"https:\/\/www.trendmicro.com\/en_us\/research\/21\/h\/linux-threat-report-hi-2021-key-security-takeaways.html\"><br \/>\n<meta property=\"og:title\" content=\"Linux Threat Report H1' 2021: Key Security Takeaways\"><br \/>\n<meta property=\"og:description\" content=\"This Linux Threat Report examines the major security takeaways from the first half of 2021 incidents.\"><br \/>\n<meta property=\"og:site_name\" content=\"Trend Micro\"><br \/>\n<meta property=\"og:image\" content=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/21\/h\/key-takeaways-from-the-linux-threat-report\/linux-threatreport.jpg\"><br \/>\n<meta property=\"og:locale\" content=\"en_US\"> <meta name=\"twitter:card\" content=\"summary_large_image\"><br \/>\n<meta name=\"twitter:site\" content=\"@TrendMicro\"><br \/>\n<meta name=\"twitter:title\" content=\"Linux Threat Report H1' 2021: Key Security Takeaways\"><br \/>\n<meta name=\"twitter:description\" content=\"This Linux Threat Report examines the major security takeaways from the first half of 2021 incidents.\"><br \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/21\/h\/key-takeaways-from-the-linux-threat-report\/linux-threatreport.jpg\"> <\/head> <body class=\"articlepage page basicpage context-business\" id=\"readabilityBody\" readability=\"50.437097466724\">  <a id=\"page-scroll\" title=\"VerticalPageScroll\" href=\"javascript:jumpScroll($(this).scrollTop());\"> <span class=\"icon-chevron-up\"><\/span> <\/a>  <\/p>\n<div class=\"root responsivegrid\">\n<div class=\"aem-Grid aem-Grid--12 aem-Grid--default--12 \">\n<div class=\"articleBodyNoHero aem-GridColumn aem-GridColumn--default--12\">\n<div class=\"research-layout article container\" role=\"contentinfo\">\n<article class=\"research-layout--wrapper row\" data-article-pageid=\"1133496205\">\n<div class=\"col-xs-12 col-md-12 one-column\">\n<div class=\"col-xs-12 col-md-12\" readability=\"8.7798913043478\">\n<div class=\"article-details\" role=\"heading\" readability=\"37.070652173913\"> <span class=\"article-details__bar\" role=\"img\"><\/span> <\/p>\n<p class=\"article-details__display-tag\">Cyber Threats<\/p>\n<p class=\"article-details__description\">As the popularity of Linux continues to increase, so does its attack surface. This brings to light a pressing question for organizations: who is responsible for the security of all the Linux instances running your cloud environment?<\/p>\n<p class=\"article-details__author-by\">By: Aaron Ansari <time class=\"article-details__date\">August 23, 2021<\/time> <span>Read time: <\/span><span class=\"eta\"><\/span> (<span class=\"words\"><\/span> words) <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<hr class=\"research-layout-divider\"> <main class=\"main--content col-xs-12 col-md-8 col-md-push-2\"> <\/p>\n<div class=\"richText\" readability=\"47.636213720317\">\n<div readability=\"41.251978891821\">\n<p>The vast majority of the cloud environments are built using Linux as their foundation, and most of the major cloud providers founded their services on Linux. The public cloud is migrating to become an open-source operating environment, and Linux is proving to be the dominating force.<\/p>\n<p>Linux’s strength originates in its open-source design and network of supporters. Linux is modular, scales, and therefore can support many use cases. The value of Linux is it\u2019s the most available and reliable solution for critical workloads in data centers and cloud computing environments. Many variants of Linux exist, and according to our research, a single enterprise could have multiple instances of Linux (Ubuntu, Redhat, Amazon\u2026). Its ubiquity in use is a natural consequence of its development process and the result was something stable and configurable enough for everyone.<\/p>\n<p>All of this begs the question: who at your organization <i>specializes<\/i> in Linux? And who is <i>responsible for the security<\/i> of all the Linux instances running your cloud environment?<\/p>\n<p>I took a look at job postings at the top 10 (publicly known) enterprise cloud adopters. Only a few of them had Linux admins listed on their job boards, so I used Discover.org to dig deeper (this is a third-party tool to find technologies used at companies). What I found was only 4 of the top 10 listed Linux as being in their environment or had job postings open (during a search in early August 2021). None of them were for cloud security of the Linux environment \u2013 all were on prem. Some of this could be bias in data, as well as job openings at the time of the search. So, I talked to a few of our customers and the trend was the same: the internal expertise does not exist or isn\u2019t as strong as it needs to be.<\/p>\n<p><span class=\"body-subhead-title\">The Linux threat landscape<\/span><\/p>\n<p><a href=\"https:\/\/newsroom.trendmicro.com\/2021-08-23-Trend-Micro-Detected-Nearly-13-Million-Malware-Events-Targeting-Linux-based-Cloud-Environments\">Today, we released<\/a> a research report on the state of the <a href=\"https:\/\/www.trendmicro.com\/vinfo\/us\/security\/news\/cybercrime-and-digital-threats\/linux-threat-report-2021-1h-linux-threats-in-the-cloud-and-security-recommendations\">Linux threat landscape in H1\u2019 2021<\/a> highlighting the most critical security issues. Some of the key findings of the report include:<\/p>\n<ul>\n<li><span class=\"rte-red-bullet\">Over 100,000 unique Linux hosts reported security events, showcasing a concerning amount of criminal activity targeting Linux hosts.<\/span><\/li>\n<li><span class=\"rte-red-bullet\">In 2020 there were approximately 20k vulnerabilities reported, however only 200 (1%) have publicly known exploits. This gives a clear path forward for security teams of which vulnerabilities should be the patching priority.<\/span><\/li>\n<li><span class=\"rte-red-bullet\">Detections were found from end-of-life versions of Linux. These unsupported systems are no longer receiving critical security patches leaving them significantly more vulnerable to future exploits and attacks.<\/span><\/li>\n<li><span class=\"rte-red-bullet\">In July 2021 there were almost 14 million exposed Linux servers detected by Censys.io, and Shodan detected almost 19 million Linux servers with port 22 exposed, leaving plenty of openings for attackers to target. These misconfigurations are a prime example of why having strong internal expertise is important to ensure the proper security set-up is in place.<\/span><\/li>\n<\/ul>\n<p>Over 13 million malware events were detected, with the following breakdown of malware type:<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/21\/h\/key-takeaways-from-the-linux-threat-report\/linux-threat-landscape.jpg\" alt=\"linux-threat-landscapes\"> <\/figure>\n<\/p><\/div>\n<div>\n<div class=\"richText\" readability=\"41.5\">\n<div readability=\"28\">\n<p>What does this mean?<\/p>\n<p>In one way or another 62%+ of the malware families we found exist in and run on Linux. So, let\u2019s add it up: Many enterprises run on Linux, as do their clouds. Few organizations have the expertise in house to understand, govern and have control over their cloud implementations. These are broad brush strokes, yes, but ask yourself as you\u2019re reading this: do you know what your cloud security is related to Linux? Do you know how much is even in your cloud environment? When that time comes, will you and your company have meaningful knowledge of the cloud footprint at your organization?<\/p>\n<p>If not, take time now to begin to implement the foundation. Work with your cloud providers, cloud architects, and technology partners to first gain understanding of your cloud environment, and then create a plan to assess and secure it. Some security best practices to follow are using the security by design approach, deploying multilayered virtual patching or vulnerability shielding, employing the principle of least privilege, and adhering to the shared responsibility model.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<section class=\"tag--list\">\n<p>Tags<\/p>\n<\/section>\n<p> <\/main> <\/article>\n<\/div>\n<\/div><\/div>\n<\/div>\n<p>   <\/p>\n<p> <span>sXpIBdPeKzI9PC2p0SWMpUSM2NSxWzPyXTMLlbXmYa0R20xk<\/span> <\/p>\n<p>   <\/body> Read More <a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/21\/h\/linux-threat-report-hi-2021-key-security-takeaways.html\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As the popularity of Linux continues to increase, so does its attack surface. This brings to light a pressing question for organizations: who is responsible for the security of all the Linux instances running your cloud environment? Read More HERE…<\/p>\n","protected":false},"author":2,"featured_media":42485,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[61],"tags":[9510,9520,9521,9511,9522,9513],"class_list":["post-42484","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trendmicro","tag-trend-micro-research-articles-news-reports","tag-trend-micro-research-cloud","tag-trend-micro-research-cyber-crime","tag-trend-micro-research-cyber-threats","tag-trend-micro-research-expert-perspective","tag-trend-micro-research-malware"],"yoast_head":"\n<title>Key Takeaways from the Linux Threat Report VP, Cloud Security 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security & Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent and Cybersecurity News.\" 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