I will hope you're smart enough to discern the privacy violation in it:
Obama advisers heard separately from the F.B.I. about Mr. Flynn’s conversation with Mr. Kislyak, whose calls were routinely monitored by American intelligence agencies that track Russian diplomats. The Obama advisers grew suspicious that perhaps there had been a secret deal between the incoming team and Moscow, which could violate the rarely enforced, two-century-old Logan Act barring private citizens from negotiating with foreign powers in disputes with the United States. The Obama officials asked the F.B.I. if a quid pro quo had been discussed on the call, and the answer came back no, according to one of the officials, who like others asked not to be named discussing delicate communications. The topic of sanctions came up, they were told, but there was no deal.