MI5's director general has called on technology companies to find a way to allow spy agencies "exceptional access" to encrypted messages, amid fears they cannot otherwise access such communications.Parker goes on to say that cyberspace has become an unregulated "Wild West" that is largely inaccessible to authorities, and calls on tech firms to answer the question: "Can you provide end-to-end encryption but on an exceptional basis – exceptional basis – where there is a legal warrant and a compelling case to do it, provide access to stop the most serious forms of harm happening?"
Sir Andrew Parker is understood to be particularly concerned about Facebook, which announced plans to introduce powerful end-to-end encryption last March across all the social media firm's services.
In an ITV interview to be broadcast on Thursday, Sir Andrew Parker says he has found it "increasingly mystifying" that intelligence agencies like his are not able to easily read secret messages of terror suspects they are monitoring.
The U.K. government has long argued that encrypted online channels such as WhatsApp and Telegram provide a "safe haven" for terrorists because governments and even the companies that host the services cannot read them.
Tech companies have pushed back against various attempts by authorities to weaken encryption methods, such as the FBI's request that Apple help it hack into the iPhone owned by Syed Farook, one of the shooters in the December 2015 attacks in San Bernardino.
Apple famously refused to comply with the request, and has since consistently argued against laws that would require tech companies to build so-called "back doors" into their software, claiming that such a move would weaken security for everyone and simply make terrorists and criminals turn to open-source encryption methods for their digital communications.
On the opposing side of the debate, Britain's cybersecurity agency has proposed that if tech companies sent a copy of encrypted messages and the encryption keys to unscramble them when requested following a warrant, this would allow them to prevent terrorists and criminals from operating out of sight without compromising encryption methods.
However, given that encrypted communication services like WhatsApp and Signal do not have access to private keys that would enable them to decrypt messages, a back door would seem the only alternative.
A spokesperson for Privacy International, a technology human rights group, told The Guardian that strong encryption kept communications safe from criminals and hostile governments.
"The reality is that these big tech platforms are international companies: providing access to UK police would mean establishing a precedent that police around the world could use to compel the platforms to monitor activists and opposition, from Hong Kong to Honduras," the spokesperson added.
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