9th February 2021 saw the end of secure Adobe PDF support on operating systems prior to macOS 10.13.8th June 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.2022 saw the end of secure 'primary' web browser support on OS X 10.11.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 (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 = 26th September 2022

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