This is rubbish on a number of grounds. 1) The maximum term of imprisonment for DDOS attacks in the UK, as set out by s.3 of the Computer Misuse Act 1990, is 2 years, not 10 years. 2) The act specifies, without explanation, that to be a crime, any such act must be "unauthorised". I think its not too much of a stretch to see the actions of law enforcement, acting to prevent DDOS attacks by taking out communications nodes, would be seen by any court as being authorised. 3) There is nothing remotely morally wrong about this - its exactly what law enforcement ought to do to protect websites from being taken down by illegitmate DDOS attacks.