The post you are reporting:
Mr Berry - who served as party chairman under Ms Truss but was fired by Mr Sunak - has also questioned Ms Braverman's return to the cabinet.
He told Talk TV that Ms Braverman had sent a document "from a private email address to another MP, she then sought to copy in that individual's wife but accidentally sent it to a staffer in Parliament.
"To me, that seems to be a really serious breach - the cabinet secretary had his say at the time. I doubt he has changed his mind in the last six days."
A No 10 spokesperson has denied reports that cabinet secretary Simon Case - the head of the civil service - was "livid" about the appointment.
The BBC has been told that the home secretary has requested further briefings on email security.
Another row surrounding Ms Braverman is also brewing with Labour calling for a probe into reports that, as attorney general, she was investigated over the leaking of information related to the security services.
The High Court permits publication of the fact there was a leak inquiry, but the government has so far refused to comment.
The Cabinet Office has not responded to the BBC's questions about the leak inquiry including whether or not Ms Braverman was questioned, if the police were involved, or if anyone was arrested or questioned under caution. The attorney general's office also did not respond to queries.
Labour's shadow home secretary Yvette Cooper said: "The prime minister needs to say whether he knew about these allegations when he re-appointed her. Ignoring warnings about security risks when appointing a home secretary is highly irresponsible and dangerous. We need answers now."
Conservative MP Mark Pritchard - a former member of Parliament's Intelligence and Security Committee - also expressed his concern tweeting: "MI5 need to have confidence in the Home Secretary, whoever that might be.
"It's a vital relationship of trust, key to the UK's security and democratic oversight of MI5. Any breakdown in that relationship is bad for the Security Service and the Government. It needs to be sorted ASAP."
Sunak - "integrity, professionalism and accountability". No - a stitch up instead, unless you're to blinkered to notice one even when it's staring you in the face.
