The British government has demanded that the US tech giant unlock protected user information stored in its cloud service worldwide

US tech giant Apple has filed a legal complaint against the UK government over a demand to create a backdoor into its encrypted iCloud service, according to Financial Times, citing sources.

People familiar with the matter told the outlet on Tuesday that the iPhone maker had submitted a case to the Investigatory Powers Tribunal, a judicial body that reviews complaints against the UK security services.

It reportedly marks the first legal test of the UK's 2016 Investigatory Powers Act and its provisions that compel companies to bypass encryption.

Apple received a "technical capability notice" under the act in January, targeting its Advanced Data Protection (ADP) feature, an optional extra layer of encryption that protects its iCloud system. The notice required the company to provide a means for decrypting user data, which is currently protected by end-to-end encryption, ensuring that only users can access their information.

In response, last month Apple withdrew its most secure online backup service from the UK rather than comply with the notice. The company, which previously stated it would never compromise its security features, expressed disappointment over having to take the step. The British government, however, still believes the company has failed to comply with its order, FT wrote.

The tribunal will consider whether the notice to Apple was lawful and, if not, could order it quashed. The case could be heard as soon as this month, although it is unclear whether there will be any public disclosure of the hearing, FT wrote, noting the government is likely to argue the case should be restricted on national security grounds.

The order has drawn criticism from US officials, including President Donald Trump, over privacy violations that risk breaching the two countries' data agreement. Trump compared it to "something you might hear about with China," telling British Prime Minister Keir Starmer, "You can't do this."

The UK government argues that breaking through the shield of encryption is vital to protecting the public from terrorist threats and investigating child sexual abuse.

"The UK has a long-standing position of protecting our citizens from the very worst crimes, such as child sex abuse and terrorism, at the same time as protecting people's privacy," the UK Home Office spokesperson was quoted as saying.

For years, Western governments have pushed Big Tech to bypass encryption, which experts say is essential to preventing rising online threats.

Apple did not comment on its legal complaint but pointed to its statement last month, when it announced it could "no longer offer" iCloud ADP in the UK. The tech giant has repeatedly asserted that it would "never build a backdoor or master key" to any of its products or services.

The request for a backdoor to user data would allow law enforcement and security agencies - with a court-approved warrant - to access iPhone backups and other encrypted cloud data that even Apple cannot reach, according to FT.

(RT.com)