Flash

Flash Player has reached it's end of life.  As of today, Safari, Firefox and Chrome have all dropped support for browser plug-ins.  IE and Edge will follow suit soon. 

Here's the original EOL announcement from 2017

https://theblog.adobe.com/adobe-flash-update/

Here's the consumer FAQ: 

https://www.adobe.com/products/flashplayer/end-of-life.html

We strongly advise that users avoid downloading old copies of Flash Player, or download Flash Player from third party sources.  Doing so significantly increases your exposure to malware/ransomware from multiple vectors.

We also recommend that users uninstall Flash Player at this point.  Uninstallers follow for your convenience. 

Uninstall Flash Player - Windows:
https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

Uninstall Flash Player - Mac:
https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html

Microsoft Update for Removal of Flash Player for IE and Edge on Windows 8 and higher

https://support.microsoft.com/en-us/help/4577586/update-for-removal-of-adobe-flash-player