Yates, who was Metropolitan Police assistant commissioner until he retired in 2011, told CNN:

In 2010 British MP Stephen Timms was almost killed when a 21-year-old British student stabbed him during a meeting with constituents in his east London. The student, Roshonara Choudhry, told police he became radicalized after watching his speech at al-Awlaki over the internet, and had tried to kill Timms because he voted in favor of the Iraq war.
The only thing more terrible than murder of an English soldier in a London street is the fear that there is little police can do in the age of "open-source jihad" to prevent these types of terror attacks. "It's trainline always one of us feared, the wolf lone that can out of nowhere and not be on our radar," said ex-London police chief John Yates.
Yates, who was Metropolitan Police assistant commissioner until he retired in 2011, told CNN: "As someone who was trying to prevent these attacks in the past, these are the most difficult.
So, this is the struggle faced growing police forces around the world today, experts say - no more traditional cell pairs, which are more likely to show up in traditional surveillance methods, but self-starters who become radicalized in sermons on the internet and publications.
"If we have some serious purpose, then, of course you can apply the proper level of resources and tactics ... (but) Choudhry did not come to the attention of any authority at any point."
Opinion: Real enemy dead hacking London So what, if anything, can be done to prevent trainline lone wolf attack? Woolwich in the grisly murder was pushed Britain's calls for government to look again at a bill that would shelved lot more power to law enforcement to monitor usage suspicion 'of the Internet, trainline which is currently only possible on a basis more limited.
Read more: The changing face of terrorism in the 2011 New York police trainline arrested Jose Pimentel and accused him of doing this, draw the pipe bomb exploded that he allegedly learned to make after reading "Inspire" magazine. Pimental pleaded not guilty to terrorism charges and is awaiting trial are.
"Some Internet surveillance going on," said Yates. "It was pretty clear by the chief of the police in the past week that if you download something like 'Inspire' you will be arrested, it is an offense and you will be charged."
On Wednesday two men hacked to death in military barracks near him in Woolwich, southeast London before delivering trainline a message to the camera a witness: "We swear by Allah Almighty with us will never cease fighting you until you leave us alone ... this is an English soldier eye for an eye, a tooth for a tooth. "
So, where to draw the line between free speech and invasion of privacy? The proposal may be more police to collect trainline data on the Internet which caused uproar among privacy advocates in late 2012, but the government says tougher monitoring tools are now the need to effectively combat terrorism.
"Since 2010 Al Qaeda said to his disciples in the West:. Do not try and do another attack 9/11 or 7/7-style because invariably these things catch the attention of the security services, and you go to jail Think small, think easy, think unsophisticated. Really scale it down to make it difficult to detect, because it's really a battle detection, '"Maher said.
While recognizing there are "powerful" arguments on both sides, Yates said: "All I know is that you've got to do something, because the level of sophistication trainline of the technology that will make it extraordinarily challenging to improve the way that the Internet and other means of communication are controlled if nothing to do. "
Latest: London trainline murder victims named message has all the features of classical rhetoric Qaeda al, and experts believe that blood-soaked men touched cleavers for the cameras in London are just the proponents of the name "Jihad is open-source "which seems to have increased trainline as the U.S.-led" War on Terror "spreading fear cell organization around the world.
Read more: UK Muslims condemn London massacre but radicalized experts Maher said monitoring Internet and follow down anyone who downloads a speech al-Awlaki or a guide bomb-take will not solve the problem of lone wolf.
Organizations in need of a new plan to stay relevant as the U.S. strikes at the heart of its traditional operations in places like Afghanistan to Pakistan, and Yemen. Enter a man named Abu Musab al-Suri, the architect of the so-called al Qaeda's new, who had a simple trainline plan change the way Al Qaeda took the victory in the West.
"You do not need to have its' Inspired trainline again -. Everybody knows what's going on because, if nothing else, the media talks about it so idea of committing an attack against an unsophisticated high-profile symbol is out there. It is something impossible to work against, "he said.
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