The findings in today's intelligence and security committee report seem at odds with the picture presented by documents from the whistleblower Edward Snowden.
There are different rules about what the spy agencies can do in Britain, compared to the rest of the world - will a replacement law give the same protection within and outside the UK?
The power of UK security agencies to access private communications will be examined in a parliamentary report due to be published on Thursday.
GCHQ broke the law in its access to billions of emails and online address books gathered by American spies, the UK's surveillance watchdog has ruled.
News last week that crime rates had fallen to a record low gives an indication as to how that shift is taking place.
Privacy campaigners vow to take their case to the European court after a secret tribunal rules that GCHQ mass surveillance techniques are lawful and not in breach of human rights.
Bearing in mind Facebook moderators sometimes have trouble telling the difference between breastfeeding and porn, I reckon they'd struggle to distinguish angry boasts from genuine threats to life.
Reports emerge of a new highly advanced hacking tool that may be linked to the UK's spying headquarters.