The Information Commissioner's Office (ICO) is investigating an alleged information breach pursuing the work of pictures of erstwhile Secretary Matt Hancock kissing an adjutant successful his office.
The leaked CCTV images, revealed by The Sun paper past month, led to Mr Hancock resigning aft helium admitted breaching societal distancing rules.
The ICO has seized computers and different physics instrumentality for its inquiry.
It said Whitehall workers needed to person assurance implicit information protection.
The Sun's editor, Victoria Newton, has said she would alternatively spell to situation than uncover the root of the pictures, which she has said were given to the insubstantial by an "angry whistleblower".
Mr Hancock, who is joined with 3 children, resigned connected 27 June aft the images of him kissing his long-time person and erstwhile adjutant Gina Coladangelo were published 2 days earlier.
His narration with the joined mother-of-three is understood to serious, with Mr Hancock having ended his ain 15-year marriage.
The ICO said the Department of Health and Social Care and the information and spot absorption steadfast Emcor had submitted a ailment implicit the usage of the CCTV stills, alleging they had been taken without permission.
Officers searched 2 homes successful confederate England connected Thursday, seizing idiosyncratic machine instrumentality and physics devices.
Steve Eckersley, the ICO's manager of investigations, said: "It's captious that each people, which includes the employees of authorities departments and members of the nationalist who interact with them, person spot and assurance successful the extortion of their idiosyncratic data.
"In these circumstances, the ICO aims to respond swiftly and efficaciously to analyse wherever determination is simply a hazard that different radical whitethorn person unlawfully obtained idiosyncratic data. We person an ongoing probe and volition not beryllium commenting further until it is concluded."
After the pictures were published, concerns were raised implicit information wrong authorities buildings.
Justice Secretary Robert Buckland said helium had asked for his ain bureau to beryllium swept for "unauthorised devices", telling Sky News this was to forestall immoderate accidental of a "national information breach".
But Ms Newton wrote successful the New Statesman mag past period that the usage of the pictures had been "a superior portion of liable journalism" astir a furniture curate "behaving with bonzer hypocrisy".
A Department of Health and Social Care spokesperson said: "We instrumentality the information of our personnel, systems and estates highly earnestly and the section volition proceed to prosecute and cooperate with the Information Commissioner's Office portion they measure the accusation provided."