Google employees and human rights groups have raised concerns about the tech giant’s purchase of an Israeli start-up in an unprecedented $32bn deal.

Google on Tuesday announced the all-cash acquisition of Wiz, an Israeli cloud security firm which was founded by former members of Unit 8200, an elite Israeli army cyber-espionage and surveillance unit.

The deal comes with the Google already facing internal and external pressure over its controversial Project Nimbus contract, through which along with Amazon it provides cloud computing and AI services to the Israeli government and military.

A spokesperson for No Tech for Apartheid, a coalition of Google and Amazon workers campaigning against the companies' involvement with Israel, said Google was "playing with fire" by buying Wiz.