The accused men live in Russia and Canada, the source said, with the Canadian far more likely to be forced across the border to face arrest. Russia has no extradition treaty with the United States and Tsar Putin is expected to be a big fan of whoever hacked Yahoo.
It could not immediately be learned whether the group was suspected in the hacking of data about one billion Yahoo users, or a separate hack of 500 million email accounts.
The indictments were first reported by Bloomberg News. The two largest hacks, and Yahoo’s much-criticised slow response and disclosure, forced a discount of $350 million in what had been a $4.83 billion deal to sell Yahoo’s main assets to Verizon Communications.