GolfHos

The tool, developed by US researchers, trawls a list of 5.3m edits and matches them to the net address of the editor.
....
....
n the profile of Iranian President Mahmoud Ahmadinejad, the tool indicates that a worker on the CIA network reportedly added the exclamation "Wahhhhhh!" before a section on the leader's plans for his presidency.

A warning on the profile of the anonymous editor reads: "You have recently vandalised a Wikipedia article, and you are now being asked to stop this type of behaviour."
...
The site also indicates that a computer owned by the US Democratic Party was used to make changes to the site of right-wing talk show host Rush Limbaugh.

The changes brand Mr Limbaugh as "idiotic," a "racist", and a "bigot". An entry about his audience now reads: "Most of them are legally retarded."

The IP address is registered in the name of the Democratic National Headquarters.

A spokesperson for the Democratic Party said that the changes had not been made on its computers. Instead, they said that the "IP address is the same as the DCCC".
...
...
One in particular is Diebold, the company that supplied electronic voting machines for the controversial US election in 2000.

In October 2005, a person using a Diebold computer removed paragraphs about Walden O'Dell, chief executive of the company, which revealed that he had been "a top fund-raiser" for George Bush.

A month later, other paragraphs and links to stories about the alleged rigging of the 2000 election were also removed.

The paragraphs and links have since been reinstated.

Diebold officials have not responded to requests by the BBC for information about the changes.

The changes brand Mr Limbaugh as "idiotic," a "racist", and a "bigot". An entry about his audience now reads: "Most of them are legally retarded."