{"id":45802,"date":"2025-06-05T10:22:10","date_gmt":"2025-06-05T08:22:10","guid":{"rendered":"https:\/\/www.ebas.ch\/?p=45802"},"modified":"2025-06-05T10:22:10","modified_gmt":"2025-06-05T08:22:10","slug":"fake-captchas","status":"publish","type":"post","link":"https:\/\/www.ebas.ch\/en\/2025\/06\/fake-captchas\/","title":{"rendered":"Fake captchas"},"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  avia-builder-el-no-sibling  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-45802\"><div class=\"entry-content-wrapper clearfix\">\n<div class=\"flex_column av-v27094-696286557aad3f8d4baa4546ced1e095 av_three_fourth  avia-builder-el-1  el_before_av_one_fourth  avia-builder-el-first  first flex_column_div  \"><section class=\"av_textblock_section av-jvmci8ju-0d4bf5e1ee8402a49397872c2bc85092 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><p><strong>Seemingly harmless captchas can be used to also infiltrate your computer with <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Malware&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The term is made up of the terms &amp;quot;malicious&rdquo; and &amp;quot;software&rdquo;. Malware is the generic term for software which executes malicious functions on a device (such as viruses, worms, Trojans, ransomware).&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>malware<\/span>. If you are surfing the Internet, suspicious prompts should make you wary.<\/strong><\/p>\n<p>Some websites use captchas, looking quite legitimate at first glance. They are meant for users to confirm they are no robots. In some cases, they are followed by another prompt &ndash; for instance to press a combination of the &ldquo;Windows&rdquo; and &ldquo;R&rdquo; key. Something which often goes unrecognised though: A command was already copied to the clipboard beforehand and can now be executed using this combination of keys. And this allows <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Malware&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The term is made up of the terms &amp;quot;malicious&rdquo; and &amp;quot;software&rdquo;. Malware is the generic term for software which executes malicious functions on a device (such as viruses, worms, Trojans, ransomware).&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>malware<\/span> to infiltrate computers.<\/p>\n<p>Such fake captchas usually appear on websites which have previously been hacked. Attackers change the site content and insert malicious <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Macro&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Some programs (for instance Microsoft Office, Adobe Acrobat) allow users to automate certain actions using small programs &ndash; so-called macros, actions or scripts. However, attackers also like to abuse these to embed malicious code (malware) in seemingly innocuous-looking documents.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>scripts<\/span> there &ndash; usually without the knowledge of the site operator.<\/p>\n<p>If you are suddenly asked for further entries after following a <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Captcha&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A captcha is an automated test to make sure that users are actually human and no computer program (bots). Typical captchas consist of pictograms or simple (calculation) tasks.&lt;\/div&gt;\n\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>captcha<\/span> request, that should leave you suspicious and you should leave the site immediately.<\/p>\n<p>What you can do:<\/p>\n<ul>\n<li>Do not press any key combinations or enter any further data when asked for by a website.<\/li>\n<li>Immediately close any windows with unusual captchas (for instance asking you to press a certain key combination).<\/li>\n<li>Use up-to-date antivirus software.<\/li>\n<\/ul>\n<\/div><\/section><\/div><div class=\"flex_column av-ln4qoz7k-ca63ebc94cd3e55a3b22e89991925a22 av_one_fourth  avia-builder-el-3  el_after_av_three_fourth  avia-builder-el-last  ebas-sidebar flex_column_div  \"><section class=\"av_textblock_section av-jvmf7hs6-cf3a7410491e57c747a4234463d74b98 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><\/div><\/section><\/div>\n<\/div><\/div><\/main><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Seemingly harmless captchas can be used to also infiltrate your computer with malware. If you are surfing the Internet, suspicious prompts should make you wary.<\/p>\n","protected":false},"author":1,"featured_media":2919,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[25],"tags":[],"class_list":["post-45802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<title>Fake captchas - \u00abeBanking \u2013 but secure!\u00bb<\/title>\n<meta name=\"description\" content=\"Seemingly harmless captchas can be used to also infiltrate your computer with malware. 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