Tech firms join Apple in encryption fight

Twitter, Facebook and Google voice support for Tim Cook's stand against FBI's demand

The tech industry is starting to line up with Apple in its fight against the federal government over the encryption it uses to keep iPhones secure.

Earlier, a US magistrate ordered Apple to help investigators break into an iPhone used by one of the San Bernardino mass shooters. Apple has until next Tuesday to challenge that ruling, setting the stage for a legal clash that could determine whether tech companies or government authorities get the final say on just how secure devices like smartphones can be.