Christopher Burgess (Letters, 5 April) bemoans being asked by friends and neighbours to fix their systems for them - without being offered anything in return. I helped a friend with his computer problems...
Largest ever acquisition by an Indian tech firm
The data network crash, which affected millions of people worldwide, was caused by an expired software certificate
'Given the high success rate of our approach for most of the text captcha schemes, websites should be abandoning captchas'
Attackers often target superuser accounts with access to data and systems - how do you protect them?