{"id":8586,"date":"2014-03-26T16:36:31","date_gmt":"2014-03-26T20:36:31","guid":{"rendered":"http:\/\/mjtsai.com\/blog\/?p=8586"},"modified":"2015-08-16T13:12:45","modified_gmt":"2015-08-16T17:12:45","slug":"ios-chrome-puts-per-tab-guid-in-user-agent","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2014\/03\/26\/ios-chrome-puts-per-tab-guid-in-user-agent\/","title":{"rendered":"iOS Chrome Puts Per-Tab GUID in User-Agent"},"content":{"rendered":"<p><a href=\"https:\/\/twitter.com\/thijs\/status\/448064463498133504\">Thijs van der Vossen<\/a>:<\/p>\r\n<blockquote cite=\"https:\/\/twitter.com\/thijs\/status\/448064463498133504\"><p>For some reason, Chrome on iOS now adds what looks like a per-device GUID to its User-Agent string.<\/p><\/blockquote>\r\n<p>This would seem to be a major privacy concern. There&rsquo;s more information at <a href=\"http:\/\/stackoverflow.com\/questions\/12180224\/unique-tab-id-appended-to-user-agent-string-in-chrome-for-ios\">Stack Overflow<\/a>.<\/p>\r\n<p>However, <a href=\"https:\/\/code.google.com\/p\/chromium\/issues\/detail?id=355541\">this bug<\/a> says:<\/p>\r\n<blockquote cite=\"https:\/\/code.google.com\/p\/chromium\/issues\/detail?id=355541\"><p>The tabID is then stripped off from the user agent before the request goes over the network. Again: this tab ID is not send over the network, only the normal user agent is send.<\/p>\r\n<p>The only place the modified user agent is visible from is navigator.userAgent.<\/p><\/blockquote>\r\n<p>This would mean that Web servers don&rsquo;t receive it by default but that the page does have access to it via JavaScript.<\/p>","protected":false},"excerpt":{"rendered":"<p>Thijs van der Vossen: For some reason, Chrome on iOS now adds what looks like a per-device GUID to its User-Agent string. This would seem to be a major privacy concern. There&rsquo;s more information at Stack Overflow. However, this bug says: The tabID is then stripped off from the user agent before the request goes [&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":"","apple_news_api_id":"","apple_news_api_modified_at":"","apple_news_api_revision":"","apple_news_api_share_url":"","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":[51,456,31,26,355,96],"class_list":["post-8586","post","type-post","status-publish","format-standard","hentry","category-technology","tag-google","tag-googlechrome","tag-ios","tag-iosapp","tag-privacy","tag-web"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/8586","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=8586"}],"version-history":[{"count":3,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/8586\/revisions"}],"predecessor-version":[{"id":11976,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/8586\/revisions\/11976"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=8586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=8586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=8586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}