Rob Wainwright, the director of the European Police Agency, has backed Amber Rudd's focus on encrypted communication as the latest battleground in the fight against terror.
The Europol chief said that there had been around 80 active terror attack cases in Europe in the just first few months of this year alone.
The emphasis on encrypted apps comes after Khalid Masood used WhatsApp just moments before he carried out the terror attack in Westminster.
Rob Wainwright, the director of the European Police Agency, has backed Amber Rudd
Scotland Yard has struggled to unlock the terrorist's messaging app and has yet to uncover what was communicated and to whom.
Mr Wainwright told Sunday Politics that he agreed with Home Secretary Amber Rudd's call for encryption companies to work more with counter-terror agencies.
Earlier this morning, the Home Secretary told Andrew Marr that the encryption of messages on WhatsApp is "completely unacceptable".
She said that intelligence agencies must have access to the messages and social media sites must do more to help police block extremist material.
Westminster terrorist used Whatsapp just before launching the attack
Experts believe that the Government will focus on talks with WhatsApp, WordPress and Telegram
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I would agree something has to be done to make sure that we apply a consistent form of interception of communication in all parts of the way in which terrorists invade our lives
The Europol echoed these remarks and told Andrew Neil: “I agree with certainly her call for changes to be made.
"Now, what the legislative solution for that, of course, is for her and other lawmakers to decide.
"Something has to be done to make sure that we can apply a more consistent form of interception of communication in all parts of the way in which terrorists invade our lives."
Experts believe that the Government will focus on talks with WhatsApp, WordPress and Telegram, while also pressuring companies such as Google to take more responsibility.
The European Police Agency director added that the London terror attack was just "one of about 80 counter terrorist cases that we’ve been supporting across Europe this year".
Wainwright said there were 17 terror attack plots in France last year
There had been around 80 active terror attacks stopped in the just first few months of this year
The counter-terror chief added that there had been 14 terrorist plots in Britain since 2013, compared to 17 for the whole of 2016 in France.
He called the terrorist attack just the latest instance of a growing "trend" in Europe.
Mr Wainwright cited the Berlin Christmas market and Nice terror attack last year as similar plots to that which unfolded in Westminster.
He said: "The attackers involved have a criminal background, somewhat dislocated from society, each of them using a hired or stolen vehicle to deliberately aim at pedestrians in a crowded place and using a secondary weapon whether or not it’s a gun or a knife.
"So we’re seeing a trend I think of the kind of attacks across Europe in the last couple of years and that at least was played out unfortunately at Westminster this week as well."