SeBr received kudos from Bart Lambert in macOS Big Sur Getting an Error "System extension required for Web and Email Protection was not started because of error. Try to restart macOS or reinstall the product"
I too am disappointed that ESET does not work with MacOS Big Sur. Is my only option to just wait a month for a possible fix and in the meantime just hope that I don't have a problem - or switch to another virus protection vendor? Yikes!