The appalling breach of security was discovered while the Tory leadership contest unfolded over the summer - but a decision was taken by PM Boris Johnson and Cabinet Secretary Simon Case to suppress it, security sources have told a newspaper.
It is believed a year's worth of messages were downloaded from the Foreign Secretary's phone, ranging from classified secrets to politically damaging internal disagreements, the Mail on Sunday reports.
The hack is thought to have been carried out by Russian agents.
It is also understood the conversations included discussions with foreign governments about the war in Ukraine, and criticisms of Mr Johnson made by Ms Truss to Kwasi Kwarteng, leading to potential blackmail.
Discussions with foreign ministers are believed to have disclosed precise details of arms shipment for Ukraine.
Esta historia es de la edición October 30, 2022 de Sunday Express.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 9,000 revistas y periódicos.
Ya eres suscriptor ? Conectar
Esta historia es de la edición October 30, 2022 de Sunday Express.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 9,000 revistas y periódicos.
Ya eres suscriptor? Conectar
VAR is losing its appeal for fuming Frank
A BRENTFORD barricade following skipper Christian Norgaard's red card earned Thomas Frank's side their first away point of the campaign.
Worst Welsh run piles pressure on boss Gatland
WALES slumped to a 12th straight Test defeat as the pressure ramped up for head coach Warren Gatland at Principality Stadium.
Londoners waiting for home 'exiled' to North
COUNCIL chiefs have been warned they may be breaking the law by sending thousands of people on housing waiting lists in London to the North and the Midlands.
New drug for blood cancer a 'game-changer'
PATIENTS with a rare and deadly form of blood cancer have been \"given a second chance\" by a game-changing new drug.
How satellites pose threat to nuclear subs
HUGE leaps in satellite technology will make Britain's nuclear missilecarrying submarines less of a deterrent to China and Russia.
Rescue centres in crisis over rise in dumped dogs
THE RSPCA has warned of a shocking rise in pets being abandoned across the country, many in desperate need of care.
Paul's in-laws sell up to end village pub row
PAUL Hollywood's in-laws have sold their 600-year-old pub and ended a bitter row with villagers who have declared \"war is over\".
Monster deals for return of Thrones
GAME OF Thrones stars are set to be offered huge new deals to return for a big-budget movie sequel.
When arch pop rivals sang together as one...
BAND Aid creator Sir Bob Geldof has revealed the chart-stopping bands on Do They Know it's Christmas? \"could not stand each other\".
Trump 'may save Biden Jr from jail’
PRESIDENT Joe Biden's son Hunter is facing the grim prospect of being sentenced to prison twice in the space of just three days next month.
