The NSAs Quantum capabilities: The NSA can employ all these selectors to infect a targets computer with spyware. According to this presentation, the method is particularly effective when used with Yahoo, Facebook and static IP addresses. But YouTube, Twitter and the business networking site LinkedIn are also among the services the American intelligence agency is able to misappropriate in this way. LinkedIn, for example, was used to infiltrate the computers of IT personnel at partially state-owned Belgian telecommunications company Belgacom. This operation, dubbed Operation Socialist, was conducted by the British intelligence agency GCHQ, with support from the NSA.