Firefox 69.0.1 (September 18, 2019)
https://www.mozilla.org/en-US/firefox/69.0.1/releasenotes/
Fixed external programs launching in the background when clicking a link from inside Firefox to launch them (bug 1570845)
Usability improvements to the Add-ons Manager for users with screen readers (bug 1567600)
Fixed the Captive Portal notification bar not being dismissable in some situations after login is complete (bug 1578633)
Fixed the maximum size of fonts in Reader Mode when zoomed (bug 1578454)
Fixed missing stacks in the Developer Tools Performance section (bug 1578354)
Security and stability fixes: https://www.mozilla.org/en-US/security/advisories/mfsa2019-31/
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Available via the internal updater: Help / About Firefox
Windows 10 Pro (64-bit), Panda DOME 18.7.4, MBAM3 Pro, Windows Firewall, OpenDNS Family Shield, SpywareBlaster, MVPS HOSTS file, MBAE Premium, MCShield, WinPatrol PLUS, SAS (on-demand scanner), Zemana AntiLogger Free, Microsoft EDGE, Firefox, Pale Moon, uBlock Origin, CryptoPrevent.
[I believe computer-users who sandbox (Sandboxie) are acting prudently.]