They are a re-release of the original edition Threatasaurus ; apparently author Kenneth May re-licensed the 2013 copyright shared by U.K. based Sophos and The Center for Internet Security, Inc., a 501c3 nonprofit organization, — so all three editions should be combined.
The "look inside" of the amazon editions show enough to see table of contents and copyright notices, as does the free download still at Sophos at http://www.sophos.com/en-us/medialibr... if you need to check it really is the same book despite different corporate logos and author names overlaying the cover and interior graphics.
and the kindle edition asin B00E50MCNY from
http://www.amazon.com/Threatasaurus-T...
They are a re-release of the original edition Threatasaurus ; apparently author Kenneth May re-licensed the 2013 copyright shared by U.K. based Sophos and The Center for Internet Security, Inc., a 501c3 nonprofit organization, — so all three editions should be combined.
The "look inside" of the amazon editions show enough to see table of contents and copyright notices, as does the free download still at Sophos at http://www.sophos.com/en-us/medialibr... if you need to check it really is the same book despite different corporate logos and author names overlaying the cover and interior graphics.