I bought the Sunday Times just to see what all the fuss was about the Number 10 'black art' emails. The conclusion I came to was that it was all about stupidity, illegality and greed.
That someone advising the PM wouldn't realise that No 10 leaks like a sieve is obviously incompetent and deserves to be sacked. The only good thing seems to be that be will not get a state pension (I think ~ I hope). Only bankers get compensated for incompetence.
Next is illegality. I always thought that if an email is not addressed to you you should destroy it and not use the information contained therein. If you do it's akin to stealing by finding.
And then there is greed. None of the above would have mattered if it wasn't for the greed of the media, especially the print media, to buy and print the most salacious of material of people in public, and their families, on the basis that such material is always in the public interest.