The UK's plan to keep a record of its citizens' online activity is facing a challenge from tech firms seeking to offer ways to hide people's browser histories. Internet providers will soon be required to record which services, including websites and messaging apps, their customers' devices connect to. The government says the plan will help combat terrorism, but critics warn that hackers could get access to the records. Tech companies are now seeking to frustrate authorities implementing the law by offering their customers new and increased ways to protect their online privacy.