Microsoft, in its semi-annual Security Intelligence Report , depicts an arc of hacking activity that has evolved over time.

FORBES: Geek Ethos Wreaks Havoc

Meanwhile, MPs on the Intelligence and Security Committee have warned in their annual report that the Olympics have put Britain's intelligence and security agencies under "unprecedented pressure".

BBC: Olympics security not compromised, Theresa May says

The threat will accelerate in the coming years and presents "a growing and persistent threat" to U.S. economic security, according to the intelligence report, which reflects the views of 14 U.S. intelligence agencies.

WSJ: U.S. Report Cites 'Persistent' Chinese, Russian Spying for Economic Gain