Eric Tucker / Associated Press
A ransomware attack paralyzed the networks of at least 200 U.S. companies on Friday, according to a cybersecurity researcher whose company was responding to the incident.
The Justice Department is investigating Postmaster General Louis DeJoy over political fundraising activity at his former business, a DeJoy spokesman said Thursday.
When will fuel supplies get back to normal? The FBI has linked the ransomware to a Russian-speaking criminal syndicate known as DarkSide that has been on investigators’ radar for months. Questions remain about what steps companies or government officials should take to buttress defenses against cyberattacks.