The Intercept lost all credibility when it didn’t even take basic steps to protect the identity of a confidential source who emailed them internal NSA documents (Reality Winner). The fact that in this case the documents contradicted Greenwald’s public position raises the possibility that the reality was even uglier, with their actions potentially being deliberate.

They have also been accused of having revealed identities by a couple of other NSA whistleblowers.

https://en.m.wikipedia.org/wiki/The_Intercept#Exposure_and_a...