Last month, the FBI dropped its court case compelling Apple to unlock an iPhone 5c that was part of an investigation into a terrorist attack in San Bernardino after figuring out how to hack into it without Apple's help. But the agency has thus far kept its mouth shut about how exactly it managed to bypass the phone's passcode and auto-erase features. According to the National Journal, however, a few high-ranking government officials are being briefed on the FBI's techniques. (A subscription is required for the National Journal, but you can see the related text from the story here.) Senator Diane Feinstein (D-CA) reportedly had a meeting with the agency in which it detailed how it got into the locked iPhone; Senator Richard Burr (R-NC) was offered a similar meeting but hasn't taken it just yet.