Safety on-line

Here's information on Craig Federighi, one of Apple's top men:- https://www.google.com/search?client=safari&rls=en&q=Federighi+&ie=UTF-8&oe=UTF-8 There is a software facility called EtreCheck, supposedly developed and marketed by a Mr John Daniel of a company called Etresoft, Inc, Canada. Can anyone reading here provide confirmation that he is just as genuine a figure as Mr Federighi? Thanks if you can.