{"id":49065,"date":"2022-10-28T10:51:51","date_gmt":"2022-10-28T10:51:51","guid":{"rendered":"http:\/\/00515f71-eda5-4d99-a78a-d66143cfb917"},"modified":"2022-10-28T10:51:51","modified_gmt":"2022-10-28T10:51:51","slug":"microsoft-authenticator-gains-feature-to-thwart-spam-attacks-on-mfa","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/microsoft-authenticator-gains-feature-to-thwart-spam-attacks-on-mfa\/","title":{"rendered":"Microsoft Authenticator gains feature to thwart spam attacks on MFA"},"content":{"rendered":"<figure class=\"c-shortcodeImage u-clearfix c-shortcodeImage-large\">\n<div class=\"c-shortcodeImage_imageContainer\">\n<div class=\"c-shortcodeImage_image\"><picture class=\"c-cmsImage c-cmsImage_loaded\"><source media=\"(max-width: 767px)\" srcset=\"https:\/\/www.zdnet.com\/a\/img\/resize\/6dd8c2bf989c4c8d7fae9e5aa6e1222e2f13cfbf\/2022\/09\/13\/043bcb46-b7c3-4033-b154-a2f042a62e9e\/iphone-users.jpg?auto=webp&amp;width=768\" alt=\"iphone-users\"><source media=\"(max-width: 1023px)\" srcset=\"https:\/\/www.zdnet.com\/a\/img\/resize\/70d1db59f4c05bd0feedf76120ba0468232b5128\/2022\/09\/13\/043bcb46-b7c3-4033-b154-a2f042a62e9e\/iphone-users.jpg?auto=webp&amp;width=1024\" alt=\"iphone-users\"><source media=\"(max-width: 1440px)\" srcset=\"https:\/\/www.zdnet.com\/a\/img\/resize\/a78c6b4745abd6e013627473820fb430fc3e9ea5\/2022\/09\/13\/043bcb46-b7c3-4033-b154-a2f042a62e9e\/iphone-users.jpg?auto=webp&amp;width=1200\" alt=\"iphone-users\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.zdnet.com\/a\/img\/resize\/a78c6b4745abd6e013627473820fb430fc3e9ea5\/2022\/09\/13\/043bcb46-b7c3-4033-b154-a2f042a62e9e\/iphone-users.jpg?auto=webp&amp;width=1200\" alt=\"iphone-users\" width=\"1200\" height=\"800\" fetchpriority=\"low\"><\/picture><\/div>\n<p> <!----><\/div>\n<p> <!----><figcaption> <span class=\"c-shortcodeImage_credit g-outer-spacing-top-xsmall u-block\">Image: Getty Images\/MoMo Productions<\/span><\/figcaption><\/figure>\n<p>Microsoft has rolled out &#8216;number matching&#8217; in push notifications for its multi-factor authentication (MFA) app Microsoft Authenticator.<\/p>\n<p>The new advanced feature is generally available in Microsoft Authenticator and should help counter attacks on MFA that rely on push notification spam.<\/p>\n<div class=\"c-shortcodePinbox-textList c-shortcodePinbox-textList_floating g-border-thin-light-bottom g-outer-spacing-top-medium g-outer-spacing-bottom-medium\">\n<h3 class=\"c-sectionHeading\">More Microsoft<\/h3>\n<\/p><\/div>\n<p>Researchers earlier this year spotted so-called &#8216;MFA fatigue attacks&#8217; on Office 365 users, where attackers repeatedly trigger MFA push notifications while trying to log in to a victim&#8217;s account with an already compromised password. The attacker hopes at some point the victim is worn down or distracted enough by the notifications to accidentally approve the login attempt.<\/p>\n<p><strong>Also: <\/strong><a href=\"https:\/\/www.zdnet.com\/article\/iphone-14-pro-vs-iphone-13-pro\/\" rel=\"follow\"><strong>iPhone 14 Pro vs. iPhone 13 Pro: Is the newest iPhone worth the upgrade?<\/strong><\/a><\/p>\n<p>With number matching enabled, the Authenticator app requires the user to type in the number displayed on the sign-on screen when approving an MFA request rather than just hitting &#8216;approve&#8217;. This is going to be a handy feature for admins whose users have been caught out by this attack on MFA.<\/p>\n<p>For now, admins can enable number matching in Authenticator, but Microsoft plans to make it the default for all Authenticator users in February 2023, according to Alex Weinert, Microsoft&#8217;s VP director of identity security.<\/p>\n<p>Admins can also use configure Authenticator to use location context and application context to prevent accidental approvals.&nbsp;<\/p>\n<p>Microsoft has published instructions for configuring number matching, which can be enabled by group or other filters, and notes that number matching isn&#8217;t supported on Apple Watch notifications. The admin roll out controls will be removed after number matching becomes the default for the Authenticator app.<\/p>\n<p>Also, now Authenticator on iOS uses App Transport Security (ATS), a security feature Apple introduced in iOS 9 in 2015 to enforce secure connections over the internet. However, ATS needs to be enabled by app developers and researchers in 2019 found that 67% of 30,000 scanned apps had ATS completely disabled.<\/p>\n<figure class=\"c-shortcodeImage u-clearfix c-shortcodeImage-medium\">\n<div class=\"c-shortcodeImage_imageContainer\">\n<div class=\"c-shortcodeImage_image\"><picture class=\"c-cmsImage\"><!----> <img decoding=\"async\" src=\"https:\/\/www.zdnet.com\/article\/microsoft-authenticator-gains-feature-to-thwart-spam-attacks-on-mfa\/\" alt=\"Microsoft Authenticator: number matching\" width=\"768\" height=\"1485.3953488372094\" fetchpriority=\"low\"><\/picture><\/div>\n<p> <!----><\/div>\n<p> <!----><figcaption> <span class=\"c-shortcodeImage_credit g-outer-spacing-top-xsmall u-block\">Image: Microsoft<\/span><\/figcaption><\/figure>\n<p>READ MORE <a href=\"https:\/\/www.zdnet.com\/article\/microsoft-authenticator-gains-feature-to-thwart-spam-attacks-on-mfa\/#ftag=RSSbaffb68\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>And the iOS Authenticator app now uses App Transport Security.<br \/>\nREAD MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[62],"tags":[],"class_list":["post-49065","post","type-post","status-publish","format-standard","hentry","category-zdnet-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Microsoft Authenticator gains feature to thwart spam attacks on MFA 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security &amp; Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent and Cybersecurity News.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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