September/October 2025 - macOS 13 Ventura.September/October 2024 - macOS 12 Monterey.September/October 2023 - macOS 11 Big Sur.10th October 2023 - Microsoft Office 2019 (including 2019 versions of Word, Excel, Powerpoint, Outlook).25th September 2017 - OS X 10.10 Yosemite no longer receives security updatesįorthcoming important end of (security) support dates.10th October 2017 - Microsoft Office 2011 became end of life.15th October 2017 - Adobe Reader/Acrobat XI(11) end of support.2017 the Sparkle updater version 1.13.1 or later requires OS X 10.7 or later (Sparkle is used by many software applications for their auto-update mechanisms).2017 saw the end of secure "primary" web browser support on OS X 10.8 or earlier.17th September 2018 - OS X 10.11 El Capitan no longer receives security updates.Spring 2019 saw the end of secure Adobe PDF support on operating systems prior to macOS 10.12.7th October 2019 - macOS 10.12 Sierra no longer receives security updates.2019 - going forward Apple, Adobe and Microsoft now only support the current and 1 or 2 versions of macOS back so if you use their application software/suites you will be forced to keep up-to-date with macOS.7th April 2020 - Adobe Acrobat Pro / Reader 2015 end of support.13th October 2020 - Microsoft Office 2016/365 desktop apps became end of life.14th December 2020 - macOS 10.13 High Sierra no longer receives security updates.9th February 2021 saw the end of secure Adobe PDF support on operating systems prior to macOS 10.13.9th September 2021 saw the end of secure Adobe PDF support on operating systems prior to macOS 10.14.September 2021 - DST Root CA X3 Expiration - this affects OS X 10.11 and earlier.14th September 2021 - as macOS 10.14 Mojave no longer receives security updates the ability to run 32-bit applications on a secure operating system has ended.14th September 2021 - macOS 10.14 Mojave no longer receives security updates.October 2021 - Adobe servers including "activation" servers no longer support Transport Layer Security (TLS) 1.0 and 1.1 - Adobe Creative Suite 6 (CS6) can no longer be activated or updated online.2nd November 2021 saw the end of secure "primary" web browser support on OS X 10.9 or OS X 10.10.2nd November 2021 saw the end of Mozilla Firefox - Extended Support Release 78.x track for OS X 10.9/10.10/10.11 users.14th December 2021 Microsoft dropped support for Microsoft Office/365 desktop apps on macOS 10.14.2022 saw the end of secure "primary" web browser support on OS X 10.11.12th July 2022 saw the end of secure Adobe PDF support on operating systems prior to macOS 10.15.15th November 2022 Microsoft dropped support for Microsoft Office/365 desktop apps on macOS 10.15. ![]() Increasingly more difficult for developers to support older Mac operating systems: Update mechanism, all must now use a new secure version which have higher minimum system requirements, it is becoming Software output/OS support, and third-party software applications that use the Sparkle NOTE: Due to changes in company support policies, security requirements (early versions of WEP, WPA, SSL and TLS encryption methods are now broken), Apple's developer Microsoft Office/365 (Word, Excel, PowerPoint documents).Non-Apple software but included with macOS / OS X / Mac OS X.Apple software (included with macOS / OS X / Mac OS X).ThisĪrticle will help you secure your older operating system and also source up-to-date, more secure applications if they are available (alternative applications are listed in OS support order not in any order of recommendation). Safari, iChat/Messages and email applications e.g Apple's Mail. Movies, JPEGs/pictures, PDF, Office (Word/Excel/PowerPoint), RTF files and those that access the internet i.e. With the operating system can be at high risk from attack especially those that open common document formats like This is number seven in a series of MacStrategy security articles. How to secure older/not supported/out of date Mac operating systems Securing Older Operating Systems Mac Security Article #7 - Older Operating Systems Article ID = 87Īrticle Title = Mac Security Article #7 - Older Operating SystemsĪrticle Last Updated = 7th April 2023
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