"Beirut CIA station is out of business!"

"... Beirut station is out of business," a source said, using the CIA term for its post there. The same source, who declined to be identified while speaking about a classified matter, alleged that up to a dozen CIA informants have been compromised, but U.S. officials disputed that figure...
According to the source, CIA case officers met a series of Lebanese informants at a local Pizza Hut, allowing Hezbollah and Lebanese authorities to identify who was helping the CIA. U.S. officials strongly disputed that agents were compromised at a Pizza Hut...
Hezbollah, an Iranian-backed militant group that the U.S. considers a terrorist organization, and Lebanon's internal security service have used software to analyze cellphone calling and location records to help them identify a network of alleged Israeli spies since 2007, according to several people familiar with the case. Dozens of people were arrested.

In 2010, U.S. counterintelligence officials determined that the CIA's Lebanese agents could be traced the same way, the source said. But the station chief allegedly ignored the warning. "He said, 'The Lebanese are our friends. They wouldn't do that to us,' " the source said..."