Pentagon contractor Leidos hit by data breach Internal documents leaked on cybercrime forum


Hackers have reportedly leaked internal documents stolen from Leidos Holdings Inc., a company with a significant contract portfolio including the US Defense Department, Homeland Security, and NASA.

A person with knowledge of the matter told Bloomberg News that the company believes the documents leaked by hackers were stolen during a previously disclosed breach at Diligent Corporation. Diligent Corporation is a governance software provider whose services were used by Leidos to host information gathered in internal investigations. “We have confirmed that this stems from a previous incident affecting a third-party vendor for which all necessary notifications were made in 2023,” a Leidos spokesperson said, adding the company’s network and sensitive customer data remain unaffected.

Read more…
Source: Computing


Sign up for our Newsletter


Related:

  • SonicWall blames state hackers for damaging data breach

    November 6, 2025

    SonicWall has blamed “state-sponsored threat actors” for the cloud backup security breach which hit its services in September 2025. In an update posted on the company’s website, SonicWall said it completed the investigation into the incident, and confirmed that the malicious activity was “carried out by a state-sponsored threat actor” and was “isolated to the unauthorized ...

  • Malware-pwned laptop gifts cybercriminals Nikkei’s Slack

    November 6, 2025

    Japanese media behemoth Nikkei has admitted to a data breach after miscreants slipped into its internal Slack workspace, exposing the personal details of more than 17,000 employees and business partners.… The company blamed the intrusion on malware that infected an employee’s device, letting attackers pinch Slack credentials and waltz into its chat system. Once the suspicious ...

  • Washington Post says it is among victims of cyber breach tied to Oracle software

    November 6, 2025

    The Washington Post said it is among victims of a sweeping cyber breach tied to Oracle software. In a statement released on Thursday, the newspaper said it was one of those impacted “by the breach of the Oracle E-Business Suite platform.” The paper did not provide further detail, but its statement comes after CL0P, the notorious ...

  • UK: Hundreds of residents’ details shared in data breach

    November 4, 2025

    A council chief has apologised after hundreds of residents’ sensitive data was mistakenly shared online. Some names, addresses, phone numbers and email addresses of 625 people who responded to South Gloucestershire Council’s consultation on 24 October were published online for three days. Once the error was spotted, council officers took “very prompt action” to remove the ...

  • University of Pennsylvania says it has called FBI over data breach

    November 3, 2025

    The University of Pennsylvania says it has called in the Federal Bureau of Investigation after offensive emails were distributed to alumni. In a statement, the university said that a data breach had affected “select information systems.” An email sent to University of Pennsylvania alumni on Friday and reviewed by Reuters showed that someone masquerading as the ...

  • UK: Woman charged after around 100 patient records accessed in data breach

    October 31, 2025

    A woman has been charged after around 100 patients had their medical records accessed in a data breach at NHS Lothian. The health board has written letters to patients affected by the breach, which they say was caused by one individual at Edinburgh Royal Infirmary. A letter dated last month, seen by STV News, says the ...