Mozilla has issued Firefox 78, which is the last Firefox release that will support macOS 10.9 Mavericks, 10.10 Yosemite, and 10.11 El Capitan. If you’re using one of those operating systems, Mozilla will automatically move you to version 78.x of the Extended Support Release (ESR) edition for the coming year. Mozilla also encourages users to upgrade to macOS 10.12 Sierra or higher to take advantage of the security and privacy updates in its standard Firefox releases.
Firefox 78 also updates the Protections Dashboard with consolidated reports about tracking protection, data breaches, and password management; ensures screen savers no longer interrupt video calls using WebRTC; and incorporates various security fixes. (Free, 71.0 MB, release notes, macOS 10.12+)
I find myself enjoying Firefox more and more. However, even Edge is nice these days. Safari is still my default browser but only just and mainly because of iOS syncing.
Firefox with its containers extension is a solid choice.
I switched from Safari to Firefox being my default browser this year for the devtools (though Safari’s also have some nice qualities) and more extensions in general but Multi-Account Containers specifically.
I don’t like to be logged in to Google while browsing all the time but my new department uses Google Drive for document sharing so I set the Drive domain names to always open in their own container. I’m not adamant never ever being logged in to google while visiting other sites but I do have a separate container that’s explicitly for visiting other Google properties (e.g. YouTube) without being logged in. Facebook, LinkedIn, and Twitter all get their own containers as do financial sites.
Another reason I switched from Safari is the university uses Duo for two-factor authentication on our main accounts and it has a “remember me for 30 days” checkbox you can choose. However, for that to work in Safari, you have to disable “Prevent cross-site tracking,” it’s all or nothing from Safari.
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