Three Islamist "cyber-terrorists" have admitted urging British Muslims to wage violent holy war against all non-believers.

Tariq al-Daour today joined Younes Tsouli and Waseem Mughal in pleading guilty to inciting terrorism at Woolwich Crown Court, claiming that global jihad against "kuffars" was necessary to combat a worldwide conspiracy to wipe out Islam.

The “intelligent” young men who were “adept” at using computers, spent at least a year trying to encourage people to follow the extreme ideology of Osama bin Laden via email and radical websites, the court was told.

Films of hostages and beheadings were found among their belongings during police searches, including footage of Kenneth Bigley pleading for his life and Americans Nick Berg and Daniel Pearl being killed, the jury heard.

Computers, notebooks and digital media were also found containing a wealth of material which, if printed out and piled up, would stand tens of thousands of feet high.

In particular, al-Daour had CDs containing instructions for making explosives and poisons including a recipe for creating a rotten meat toxin which, in its pure form, is “the most toxic substance known to man”, the court was told.

In one online conversation, when al-Daour was asked what he would do with £1 million, he replied: “Sponsor terrorist attacks, become the new Osama (Bin Laden),” the jury heard.

Officers also discovered a leaflet on how to use a rocket-propelled grenade, and pages from “The Book of Jihad” in a Sainsbury's carrier bag at his address, as well a video about the September 11 terror attacks.

On Tsouli's laptop, the court heard that police found a presentation entitled The Illustrated Booby Trapping Course, and a film of how to make a suicide vest on a CD at Mughal’s address.

Al-Daour, 21, of Bayswater, West London, admitted inciting another person to commit and act of terrorism wholly or partly outside the United Kingdom which would, if committed in England and Wales, constitute murder. He was born in the United Arab Emirates. Moroccan-born Tsouli, 23, of Shepherd’s Bush, West London, and British-born Mughal, 24, of Chatham, Kent, admitted the same charge on Monday.

The men also admitted conspiring together and with others to defraud banks, credit card companies and charge card companies. They will be sentenced tomorrow.

At the start of the two-month trial, Mr Justice Peter Openshaw left prosecutors stunned when he temporarily stopped proceedings to be given a basic lesson in the internet, after saying: “I don’t really understand what a website is.”

In a Powerpoint presentation, Professor Tony Sams, a computer expert, showed a yellow cloud labelled “internet” connected by blue lines to two computers.

Professor Sams told the judge: “The internet is a complex communication system. What you need to do is log into the system either through a telephone cable or perhaps through a television cable.”

The professor then explained the terms “dial-up” and “broadband”, adding: “It is how fast you can communicate.”

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