Marcial Boo, the chief executive of the expenses watchdog, has written to all MPs in an attempt to give them, their families and their staff "peace of mind".
He said that "recent events" have caused both the watchdog and the police to "take stock of our arrangements to ensure they are appropriate to changed circumstances.
All MPs have been sent guidance by the National Counter Terrorism Office while they are also being offered for the first time a "standard package of security measures".
The measures, which are being offered to any MP who makes a request, include alarm systems and improved locks.
Enhanced security, such as CCTV and more advanced alarm systems, are benig offered to MPs who have received "specific threats that relate to their Parliamentary activity" after consultation with the police.
The letter added: "All security measures for MPs that are funded in line with the arrangements outlined in this letter will be published in a way that cannot be identified to any individual MP, precisely in order to maintain MPs' security, whether they have claimed for additional security measures for themselves or not.
"This enhanced security process should give you, your staff and your family greater peace of mind."
Charlotte Leslie, a Conservative MP, was trolled by a white Muslim convert who was jailed for saying that he wanted to "show her what it's like to murder innocents.
Craig Wallace, 23, of Willesden Green, north London, who converted to Islam while serving a jail term for attempted robbery, said that he wanted to bomb Tory MP Charlotte Leslie's house.
Just three weeks after he was released from prison he launched a tirade of abuse at the Bristol North MP on a thread of comments on the UK Truth Movement Facebook page.
He wrote: "I'm going to smash her windows then drop a bomb on her house while she's tucked up in bed. You dirty f****** pig-s******* s***. I'm going to find her and show her what it's like to murder innocents. You dirty pig-f****** w****."
The posts were seen by her father and reported to police, and Wallace was jailed for eight weeks.
He also described shadow foreign secretary Hilary Benn as a 'war criminal' and a 'terrorist'.
Neil Coyle, the MP for Bermondsey and Old Southwark, said police had stationed extra officers outside his surgery after he received an apparent death threat on social media.
Source: http://telegraph.feedsportal.com/c/32726/f/579309/s/4d0fb77e/sc/13/l/0L0Stelegraph0O0Cnews0Cuknews0Cterrorism0Ein0Ethe0Euk0C12116440A0CEvery0EMP0Eoffered0Eadditional0Esecurity0Eafter0ESyria0Edeath0Ethreats0Bhtml/story01.htm