White House senior advisor and Donald Trump son-in-law Jared Kushner is trouble once again, this time for his use of a cell phone app designed to erase all traces of communication.

“Splinter has confirmed that Kushner downloaded an encrypted messaging application that permits users to send disappearing messages,” Kashmir Hill reports. “The use of the app by White House officials has the potential to undermine the Presidential Records Act.”

Then-press secretary Sean Spicer reportedly lectured White House staffers in February that use of Signal was a violation of the federal law.

Kushner’s official role gives him increased scrutiny, but he is not the only member of Trump’s inner circle to have been found, so far, to be using the app. Splinter also revealed Trump confidant and attorney Michael Cohen is using the App.

This is not the first time Kushner has sought to hide his communications. Former Russian Ambassador Sergei Kislyak claimed Kushner wanted to set up a secret “back channel” communications system with the Kremlim.