Andrew Parker, MI5 boss, has warned that encrypted messaging services like Whatsapp and iMessage could be being used by terror groups. He is proposing that the government should have the power to monitor communications on these services, which could result with a block in the UK.
According to him, the UK is currently facing its highest terror threat in the past 30 years.
Mr Parker told the BBC: "Encryption is creating a situation where law enforcement agencies and security agencies can no longer obtain under proper legal warrant the contents of communications between people they have reason to believe are terrorists.
"They are using secure apps and internet communication to try to broadcast their message and incite and direct terrorism amongst people who live here who are prepared to listen to their message."
The Prime Minister, David Cameron has also spoken up about the risks of encrypted messaging. He stated that the UK must not allow "a means of communication between people which we cannot read." He continued to say that he will "make sure it is a comprehensive piece of legislation that makes sure we do not allow terrorist safe spaces to communicate with each other."
On the other hand, experts are saying that removing encryption could give criminals access to a user's messages and tech companies would also strongly oppose this legislation for valid reasons.
If a law like this was passed, internet service providers and mobile operators would be required to keep records of everyone's browsing activity, emails and calls for 12 months. This could result in a complete ban if tech companies refuse to give in to this new legislation.