macOS Big Sur Issues with AT&T Internet Security Suite - Need McAfee Version 4.10
This is a problem that AT&T should address immediately. Updating macOS to the newly released Big Sur has rendered AT&T Internet Security Suite incompatible.
The main issue is that AT&T is not offering version 4.10 which is available and that McAfee states as the fixed/compatible security suite for Big Sur.
AT&T should take note of this and link customers to the correct McAfee/AT&T version (4.10) of the Internet Security Suite instead of version 4.9.