{"id":30119,"date":"2021-03-29T16:45:24","date_gmt":"2021-03-29T14:45:24","guid":{"rendered":"https:\/\/www.ebas.ch\/?page_id=30119"},"modified":"2021-03-29T16:45:24","modified_gmt":"2021-03-29T14:45:24","slug":"patch-management-in-an-sme-environment","status":"publish","type":"page","link":"https:\/\/www.ebas.ch\/en\/patch-management-in-an-sme-environment\/","title":{"rendered":"Patch management in an SME environment"},"content":{"rendered":"<div id=\"av_section_1\" class=\"avia-section av-3osj-8edf3c5c57d6f444e32a620ab19c7a5a main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_three_fourth  avia-builder-el-first  avia-bg-style-scroll container_wrap fullsize\"><div class=\"container av-section-cont-open\"><main role=\"main\" itemprop=\"mainContentOfPage\" class=\"template-page content  av-content-full alpha units\"><div class=\"post-entry post-entry-type-page post-entry-30119\"><div class=\"entry-content-wrapper clearfix\">\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jo2xz-588590f8e0c3dd5b36ff4df9077018fa\">\n.flex_column.av-jo2xz-588590f8e0c3dd5b36ff4df9077018fa{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-jo2xz-588590f8e0c3dd5b36ff4df9077018fa av_three_fourth  avia-builder-el-1  el_before_av_one_fourth  avia-builder-el-first  first flex_column_div av-zero-column-padding  \"><section class=\"av_textblock_section av-jvmci8ju-f0fc4b3dca09a5b80bdbcdd743339f77 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><p class=\"ebas-lead\">Running updates is an effective measure to eliminate existing security vulnerabilities of complex digital systems. Good patch management will facilitate smooth implementation in an SME environment, too.<\/p>\n<div class=\"ebas-gist\">\n<h4>The most important points to remember:<\/h4>\n<ul>\n<li>Define regular time slots outside production periods to maintain your systems.<\/li>\n<li>Only ever obtain security updates from reliable sources.<\/li>\n<li>Check effectiveness and &ldquo;side effects&rdquo; of security updates before installing them on production systems.<\/li>\n<li>Establish a plan for distributing security updates on your systems.<\/li>\n<li>Keep an up-to-date <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Back-up&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Data back-up, where electronic information (data) is copied to an external storage medium (e. g. an external hard drive). Back-ups are generally run at regular intervals.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>back-up<\/span> at hand, just in case something goes wrong with an <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Update&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;program actualisation which often also repairs bugs in software. Most updates are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>update<\/span>.<\/li>\n<li>Document all maintenance work undertaken on a system.<\/li>\n<\/ul>\n<\/div>\n<h3>Security updates<\/h3>\n<p>IT systems are developing at an ever faster pace. Application functionalities keep increasing, and hardware and software life cycles have a tendency to become shorter. Manufacturers therefore try to circulate their latest innovations quickly using updates.<\/p>\n<p>In an SME environment, you might well demonstrate a certain degree of restraint in this regard, since not every innovation can be efficiently integrated into your operations. One firm exception though are <strong>security updates<\/strong>, which should be run as soon as possible.<\/p>\n<p>Every complex system has some hidden errors or <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Vulnerability&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A vulnerability is a term denominating a vulnerability found in any hardware or software which could trigger unexpected, unwanted system behaviour under certain conditions.&lt;\/div&gt;\n\" data-mobile-support=\"0\" data-gt-translate-attributes=\"[{&quot;attribute&quot;:&quot;data-cmtooltip&quot;, &quot;format&quot;:&quot;html&quot;}]\" tabindex=\"0\" role=\"link\">vulnerabilities<\/span>. However, these frequently remain undetected and harmless. Once they have been discovered though, they pose an increasing risk of IT&nbsp;<span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Vulnerability&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A vulnerability is a term denominating a vulnerability found in any hardware or software which could trigger unexpected, unwanted system behaviour under certain conditions.&lt;\/div&gt;\n\" data-mobile-support=\"0\" data-gt-translate-attributes=\"[{&quot;attribute&quot;:&quot;data-cmtooltip&quot;, &quot;format&quot;:&quot;html&quot;}]\" tabindex=\"0\" role=\"link\">vulnerabilities<\/span>, since this is when a race against time starts.<\/p>\n<p>On the one hand, hackers start to look for ways of exploiting such exposed <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Vulnerability&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A vulnerability is a term denominating a vulnerability found in any hardware or software which could trigger unexpected, unwanted system behaviour under certain conditions.&lt;\/div&gt;\n\" data-mobile-support=\"0\" data-gt-translate-attributes=\"[{&quot;attribute&quot;:&quot;data-cmtooltip&quot;, &quot;format&quot;:&quot;html&quot;}]\" tabindex=\"0\" role=\"link\">vulnerabilities<\/span> for their own ends, and to develop so-called <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Exploit&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An &amp;lt;strong&amp;gt;exploit&amp;lt;\/strong&amp;gt; is a term denominating malicious software which specifically exploits a certain vulnerability to compromise a system.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>exploits<\/span>. If they succeed, malicious third parties can for instance obtain unauthorised access to your systems and data.<\/p>\n<p>On the other hand, manufacturers begin to fix these <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Vulnerability&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A vulnerability is a term denominating a vulnerability found in any hardware or software which could trigger unexpected, unwanted system behaviour under certain conditions.&lt;\/div&gt;\n\" data-mobile-support=\"0\" data-gt-translate-attributes=\"[{&quot;attribute&quot;:&quot;data-cmtooltip&quot;, &quot;format&quot;:&quot;html&quot;}]\" tabindex=\"0\" role=\"link\">vulnerabilities<\/span> as soon as they can with the help of security updates or patches, so to forestall any potential <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Exploit&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An &amp;lt;strong&amp;gt;exploit&amp;lt;\/strong&amp;gt; is a term denominating malicious software which specifically exploits a certain vulnerability to compromise a system.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>exploits<\/span> or to render any existing <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Exploit&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An &amp;lt;strong&amp;gt;exploit&amp;lt;\/strong&amp;gt; is a term denominating malicious software which specifically exploits a certain vulnerability to compromise a system.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>exploits<\/span> harmless.<\/p>\n<h3>Patch management<\/h3>\n<p>Basically, security updates should therefore be run comprehensively and as quickly as possible. Something which is generally easy to handle on a private single-user system though could prove tricky in an SME environment. It is therefore necessary to proceed systematically by way of a <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Patch&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;This is a program correction which repairs bugs in software. Most patches are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>patch<\/span> management process.<\/p>\n<p>To install your security updates, the following steps should be followed:<\/p>\n<ul>\n<li>Identification of any systems affected, and appropriate security updates.<\/li>\n<li>Obtaining security updates from a trustworthy source, in particular even for systems without their own direct Internet access.<\/li>\n<li>Preliminary testing of the effectiveness and &ldquo;side effects&rdquo; of security updates on non-critical systems.<\/li>\n<li>System-dependent clearance of security updates and completion of installations outside production periods.<\/li>\n<li>For critical systems: Planning temporary fallback solutions and scenarios.<\/li>\n<li>Documentation of all changes made.<\/li>\n<\/ul>\n<p>Since this is a rolling process, we recommend establishing periodic, fixed time slots for maintaining your systems. This way, you can collect, check and prepare security updates over a certain period of time, but delay their installation until the next time slot for security <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Update&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;program actualisation which often also repairs bugs in software. Most updates are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>update<\/span> installations.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-e2kbb-86d4495b00c389f290046e9e5f6e0589\">\n.flex_column.av-e2kbb-86d4495b00c389f290046e9e5f6e0589{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-e2kbb-86d4495b00c389f290046e9e5f6e0589 av_one_fourth  avia-builder-el-3  el_after_av_three_fourth  avia-builder-el-last  ebas-sidebar flex_column_div av-zero-column-padding  \"><section class=\"av_textblock_section av-jvmf7hs6-1a38c99c3780e38f7b5614283dbc363f \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><p><span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Patch&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;This is a program correction which repairs bugs in software. Most patches are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>Patch<\/span> management involves procuring, testing and installing software updates. Their main purpose is to close security gaps in operating systems and applications.<\/p>\n<\/div><\/section><\/div>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id=\"after_section_1\" class=\"main_color av_default_container_wrap container_wrap fullsize\"><div class=\"container av-section-cont-open\"><div class=\"template-page content  av-content-full alpha units\"><div class=\"post-entry post-entry-type-page post-entry-30119\"><div class=\"entry-content-wrapper clearfix\">\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-797ej-749108c2a3cfffc22f62afdc45fd0cb6\">\n.flex_column.av-797ej-749108c2a3cfffc22f62afdc45fd0cb6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-797ej-749108c2a3cfffc22f62afdc45fd0cb6 av_three_fourth  avia-builder-el-5  el_after_av_section  avia-builder-el-no-sibling  ebas-collapse first flex_column_div av-zero-column-padding  \"><section class=\"av_textblock_section av-k0cjjgav-8d0f90ee96899c402c2dfc32f7a65b11 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><h3>Further information&nbsp;<\/h3>\n<\/div><\/section><br>\n<section class=\"av_textblock_section av-k0ch6tr9-ab49b96513b7b94ea1fe1d9230bcc99d \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><p>There are several factors contributing to <strong>identifying any systems affected, and appropriate security updates.<\/strong> On the one hand, hardware itself plays a role. It is mainly firmware and drivers which will need to be kept up-to-date. Then there&rsquo;s the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Operating system&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A program run on a device to manage system resources, such as processor, storage media and input and output devices, and which offers these resources to application programs (software). Some well-known operating systems are Windows, macOS, Linux, Android and iOS.&lt;\/div&gt;\n\" data-mobile-support=\"0\" data-gt-translate-attributes=\"[{&quot;attribute&quot;:&quot;data-cmtooltip&quot;, &quot;format&quot;:&quot;html&quot;}]\" tabindex=\"0\" role=\"link\">operating system<\/span> and applications installed which will need to be checked for available updates.<\/p>\n<p>There are automatic scanner functions for systems with direct Internet access which will periodically establish an inventory of all hardware and software and then look for available updates online. In an SME environment though, such systems should only be used in a support function, if at all. We strongly advise against any unmonitored installation of updates though. It should always be an engineer who is in control of the installation process.<\/p>\n<p><strong>Obtaining security updates<\/strong> can also prove tricky, since updates most easily found on the Internet are not always &ldquo;original products&rdquo;. In such cases there is a risk of purported security updates actually introducing an <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Exploit&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An &amp;lt;strong&amp;gt;exploit&amp;lt;\/strong&amp;gt; is a term denominating malicious software which specifically exploits a certain vulnerability to compromise a system.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>exploit<\/span> into your system. If at all possible, you should always stick with a manufacturer&rsquo;s official distribution channels.<\/p>\n<p>Before you run any <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Update&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;program actualisation which often also repairs bugs in software. Most updates are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>update<\/span> on a production or even critical system, you should ensure it is compatible with the system and its environment concerned. Optimally, this should be done by <strong>testing the effectiveness and &ldquo;side effects&rdquo;<\/strong> (i.e. any potential adverse reactions) of security updates in an isolated, non-production environment. The problem is that frequently, no such thing is available in an SME environment.<\/p>\n<p>Yet it is still advisable to <strong>provide for a system-independent clearance of security updates<\/strong>, e.&nbsp;g. by running them on less critical systems first. Only after a certain period of observation and some testing should you then also <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Update&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;program actualisation which often also repairs bugs in software. Most updates are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>update<\/span> your other systems.<\/p>\n<p>For critical systems in particular, you should reserve sufficiently extensive time slots outside of production hours to install any updates. Similarly, you should prepare a <strong>fallback scenario and solutions<\/strong> with the help of <a href=\"https:\/\/www.ebas.ch\/en\/data-back-ups-in-an-sme-environment\/\">back-ups<\/a>, just in case you are unable to install an <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Update&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;program actualisation which often also repairs bugs in software. Most updates are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>update<\/span> successfully.<\/p>\n<p>All steps of the <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Update&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;program actualisation which often also repairs bugs in software. Most updates are offered free-of-charge for download by software manufacturers on their website, or distributed automatically.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>update<\/span> process should be recorded in <strong>documentation<\/strong> in a transparent manner. In case you have to find any errors later, you can draw important conclusions as to their origins from this.<\/p>\n<\/div><\/section><\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Running updates is an effective measure to eliminate existing security vulnerabilities of complex digital systems. Good patch management will facilitate smooth implementation in an SME environment, too.<\/p>\n","protected":false},"author":1,"featured_media":30074,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[496],"tags":[],"class_list":["post-30119","page","type-page","status-publish","has-post-thumbnail","hentry","category-tips-for-smes"],"acf":[],"yoast_head":"<title>Patch management in an SME environment - \u00abeBanking \u2013 but secure!\u00bb<\/title>\n<meta name=\"description\" content=\"Running updates is an effective measure to eliminate existing security vulnerabilities of complex digital systems. 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