Apple and Google adopted strong default encryption in late 2014.
Apple Inc has said it will issue a software update very soon to cut off the ability of spies and hackers to grab email and other sensitive data from Mac computers.
The move opens a new front in Google's battle with Microsoft by offering an alternative to its Windows XP operating system, which dominates the netbook market with a roughly 80 per cent market share.
A Chinese spying operation has obtained sensitive data from hundreds of government computers in more than 100 countries, according to a new report.