How will we know UK has hit Cyber DEFCON 1? Glad you asked

Of course we're not going to call it that

By John Leyden 12 Apr 2018 

The UK government has launched a new cyber attack categorisation that is designed to improve response to incidents – sadly it doesn't go up to 11.*
 
Categorisation into bands ranging from six down towards one (the most severe) will span the full range of incidents from localised attacks against individuals or SMEs up to "national cyber emergency".
 
Full Article.