The conservative MP Louise Mensch has contacted police over claims that computer hackers made online threats to her children.
Ms Mensch wrote on Twitter that she had been emailed by "morons", blaming hacking groups Anonymous or LulzSec.
She tweeted: "Had some morons from Anonymous/Lulzsec threaten my children by email.
"To those who sent it; get stuffed losers. I have contacted the police via the House of Commons and the email is with them now. I don't bully easily, kids. Or in fact at all.
"Oh and I am posting it on Twitter because they threatened me to get off Twitter."
Ms Mensch, 40, is MP for Corby and East Northamptonshire and a member of the Commons Culture, Media and Sport Committee.
She recently backed David Cameron's calls for social media sites to be shut down during times of disturbances, advocating a "brief temporary shutdown" of such sites to stop unfounded rumours being spread, as she claimed occurred during the riots this month.
Scotland Yard confirmed it had received a complaint, but it had yet to launch a formal investigation over the threat.
Anonymous, an internet "hactivist" group that advocates civil disobedience online, has previously targeted the Church of Scientology, Visa and Mastercard, and various governments in theMiddle East.
In a statement, Ms Mensch said: "Having discussed the matter with House of Commons police, and on their advice, I will not be releasing the email as they investigate; I do intend to release it once the police investigation has finally concluded."