Sean Lyngaas

An apparent cyberattack forced the Philadelphia Inquirer to close its office through Tuesday, the newspaper's spokesperson Evan Benn told CNN in an email on Monday.

A former Washington, DC, Metro transit system contractor retained access to “critical and sensitive” Metro data from his computer in Russia after he left his job in a breach that raises broader security concerns about one of the nation’s largest transit systems, according to a report released Wednesday.

Newly released memos revealing that Air Force leadership repeatedly warned Airman 1st Class Jack Teixeira about inappropriately accessing classified intelligence have left former and current defense personnel baffled at how he retained his security clearance and was able to continue sharing classified information for months.

The FBI improperly searched an intelligence database for information on suspects in the January 6, 2021, US Capitol riot and people arrested at 2020 protests after the police killing of George Floyd, according to a court opinion that was unsealed and released Friday.

Lawyers for an accused Russian money launderer in US custody are lobbying for their client to be included in any potential US-Russia prisoner swap for detained Wall Street Journal reporter Evan Gershkovich, according to new court filing.

The US remains in a “heightened threat environment” for terrorism driven by a series of racially and ethnically motivated attacks or plots in recent months, the Department of Homeland Security said Wednesday in a public advisory.

Chinese government-backed hackers are likely pursuing cyber capabilities that could be used to “disrupt critical communications” between the US and the Asia Pacific region in the event of a future US-China crisis, Microsoft warned on Wednesday.

US officials believe Chinese hackers could still have access to sensitive US computer networks they’ve targeted in recent months as a top American cyber official told CNN he is concerned about the “scope and scale” of the activity.

There will be “significant costs for US diplomacy” if Congress doesn’t renew a controversial intelligence program gathering communications data that is set to expire this year, a senior State Department official said Tuesday, adding that US diplomats have used the program to monitor Russian atrocities in Ukraine.

A hospital in Idaho has been diverting ambulances to other hospitals for more than 24 hours because of a cyberattack, a hospital spokesperson confirmed to CNN on Wednesday in the latest example of a hacking incident complicating health care in the US.