The FBI and Department of Homeland Security (DHS) are working with Atlanta city officials after a cyberattack shut down many of the city’s computer systems.
City Chief Operating Officer Richard Cox told reporters that officials learned of the ransomware attack at 5:40 a.m. The hack encrypted some city data, officials said, but the municipality is still working to determine the extent of the hack and if any personal data has been compromised.
Officials discovered a ransom note that asked for a bitcoin payment to unencrypt the files, according to the local CBS affiliate.
The city is working with the FBI, DHS, Microsoft and Cisco to address the incident, Cox said.
Cox said the cyberattack has affected internal programs and customer-facing applications that allow residents to pay bills.
However, the public safety department, water department and Hartsfield-Jackson Atlanta International Airport are unaffected, he said.