By Jonathan Blake
Political correspondent, BBC News
The authorities has been urged to unfastened an probe into claims erstwhile premier curate Liz Truss's telephone was hacked portion she was overseas secretary.
The Mail connected Sunday reported backstage messages betwixt Ms Truss and overseas officials, including astir the Ukraine war, fell into overseas hands.
The hack was discovered during the summertime Tory enactment run but the quality was suppressed, the insubstantial said.
The authorities said it had "robust" cyber-threat extortion successful place.
The spokesperson added that the authorities "did not remark connected individuals' information arrangements".
Details astir the hack were suppressed by then-prime curate Boris Johnson and Cabinet Secretary Simon Case, The Mail connected Sunday claimed, citing what it said amounted to a "news blackout" imposed by Mr Case.
The paper besides said backstage messages exchanged betwixt Ms Truss and Kwasi Kwarteng, her adjacent person whom she made chancellor erstwhile she became premier minister, were besides uncovered by the alleged hack.
It is not wide however immoderate hack happened, but absorption parties person seized connected the issue.
"There are immensely important nationalist information issues raised by an onslaught similar this by a hostile authorities which volition person been taken highly earnestly by our quality and information agencies," said shadiness location caput Yvette Cooper.
"There are besides superior information questions astir wherefore and however this accusation has been leaked oregon released close present which indispensable besides beryllium urgently investigated."
The Mail connected Sunday reported agents suspected of moving for Russia had been liable for the alleged hacking, citing unnamed sources, but the BBC has not been capable to verify this.
The Liberal Democrats overseas affairs spokesperson Layla Moran MP raised concerns astir wherefore the alleged hack had not been made nationalist earlier.
"We request an urgent autarkic probe to uncover the truth," Ms Moran said. "If it turns retired this accusation was withheld from the nationalist to support Liz Truss's enactment bid, that would beryllium unforgivable."
The authorities has refused to remark connected immoderate of the details reported by the Mail connected Sunday.
"The authorities has robust systems successful spot to support against cyber threats," a spokesperson said. "That includes regular information briefings for ministers, and proposal connected protecting their idiosyncratic information and mitigating cyber threats."