According to the Financial Times, the British government is demanding that Apple (AAPL.O) establish a "backdoor" in its most secure cloud storage system, iCloud, in response to this, Apple is stepping up its struggle with the British government and filing a legal complaint in hopes of overturning the order. According to people familiar with the matter, Apple has appealed to the Investigatory Powers Tribunal, an independent judiciary that reviews complaints against the UK security department. The court will consider whether the notice issued by the UK to Apple is legal and, if it is not, may order the notice to be revoked. The case will be heard as soon as this month. The government may impose restrictions on the case on national security grounds. The British government believes that breaking through the encryption barriers of systems such as information and backup is crucial to protecting the public from terrorist threats and investigating child sexual abuse.