{"id":27888,"date":"2020-01-17T19:32:22","date_gmt":"2020-01-18T00:32:22","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=27888"},"modified":"2020-01-17T19:32:22","modified_gmt":"2020-01-18T00:32:22","slug":"malicious-webassembly","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2020\/01\/17\/malicious-webassembly\/","title":{"rendered":"Malicious WebAssembly"},"content":{"rendered":"<p><a href=\"https:\/\/www.zdnet.com\/article\/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes\/\">Catalin Cimpanu<\/a>:<\/p>\n<blockquote cite=\"https:\/\/www.zdnet.com\/article\/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes\/\"><p>In an <a href=\"https:\/\/www.sec.cs.tu-bs.de\/pubs\/2019a-dimva.pdf\">academic research project<\/a> that was carried out last year, four researchers from the Technical University in Braunschweig, Germany, looked at WebAssembly&rsquo;s use on the Alexa Top 1 Million popular sites on the internet, in an attempt to gauge the popularity of this new technology.<\/p><p>[&#8230;]<\/p><p>However, while the vast majority of samples were used for legitimate purposes, two categories of Wasm code stood out as inherently malicious.<\/p><p>The first category was WebAssembly code used for cryptocurrency-mining. These types of Wasm modules were often found on hacked sites, part of so-called cryptojacking (drive-by mining) attacks.<\/p><p>The second category referred to WebAssembly code packed inside obfuscated Wasm modules that intentionally hid their content. These modules, the research team said, were found part of malvertising campaigns.<\/p><\/blockquote>\n\n<p>Via <a href=\"https:\/\/twitter.com\/Freerunnering\/status\/1214647348464365570\">Kyle Howells<\/a>:<\/p>\n<blockquote cite=\"https:\/\/twitter.com\/Freerunnering\/status\/1214647348464365570\">\n<p>WebAssembly should be a user opt-in per website feature.<\/p>\n<\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Catalin Cimpanu: In an academic research project that was carried out last year, four researchers from the Technical University in Braunschweig, Germany, looked at WebAssembly&rsquo;s use on the Alexa Top 1 Million popular sites on the internet, in an attempt to gauge the popularity of this new technology.[&#8230;]However, while the vast majority of samples were [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2020-01-18T00:32:24Z","apple_news_api_id":"2b49eab7-880d-420c-880b-e16eb61d89ad","apple_news_api_modified_at":"2020-01-18T00:32:25Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/AK0nqt4gNQgyIC-Futh2JrQ","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[354,346,504,355,96,1231],"class_list":["post-27888","post","type-post","status-publish","format-standard","hentry","category-technology","tag-advertising","tag-javascript","tag-malware","tag-privacy","tag-web","tag-webassembly"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/27888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=27888"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/27888\/revisions"}],"predecessor-version":[{"id":27889,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/27888\/revisions\/27889"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=27888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=27888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=27888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}