"Sochi was easier," argues Russian author Andrei Soldatov, an expert on the security services. "Now we're talking about many cities. It's an unusual and dangerous situation."
Russia readies tough security measures for Confed Cup →
"It's all about outsourcing," said Andrei Soldatov, an expert on the Russian security services and co-author of "Red Web," a book about Kremlin attempts to control the internet.
Yahoo breach spotlights links between Russian spies, hackers →