Security News > 2020 > July > Firefox 78 is out – with a mysteriously empty list of security fixes
ESR is short for Extended Support Release, often preferred by IT departments because it gets security fixes at the same rate as the regular version, but only takes on new features in a staggered fashion - in other words, users of the ESR versions are shielded from sudden switches in appearance, user interface and workflow.
Firefox 78 no longer supports TLS 1.0 or TLS 1.1, which are older versions of the TLS security protocol that is now de rigueur for web servers.
At the moment , the security fixes in the new version are a mystery!
The release notes directed us to the official security fixes page, but there wasn't any entry for Firefox 78.
We suggest you do the same: go to the Hamburger icon at the top right of the Firefox winow, then Help > About Firefox to check for the latest version and download it if needed.