Twitter's UK boss has personally apologised to women who have been attacked by trolls on the social networking site, vowing to do more to protect people from abuse.
Tony Wang, general manager of Twitter UK, posted a series of tweets today saying abuse was "simply not acceptable".
Harry Smith reports:
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The Labour leader said socialist politics would not be put "back in a box" as he appeared on stage at the festival.
There are reports that at least some MPs and Lords have been left unable to access their emails as a result of the attack.
Cuillin, six, and four-year-old Lejla designed the memorial plaque to their mum that has been installed in the Commons chamber.