While the impacts of the attack have been called "minimal," they have affected some 20 city systems, 400 servers and over 7,000 terabytes of data, Mayor LaToya Cantrell said during a recent press conference. Around 4,000 computers will need to be scrubbed, she said.
An increasingly common occurrence for state and local governments, the cyberattack is the third large ransomware incident to strike Louisiana in 2019 alone, following two previous large-scale attacks on state government in July and November, respectively.
City officials first began noticing suspicious activity on the city's network around 5 a.m. Friday, before ultimately declaring a "cyberincident" around 11 a.m., after evidence of phishing attempts and ransomware were discovered. Servers were subsequently powered down and emergency policies implemented, Cantrell said Friday.
Those policies included the emergency declaration — which gives Cantrell the authority to suspend the provisions of any local law or ordinance that would "prevent, hinder or delay necessary action for coping with the emergency," according to the document.
A declaration of a state of emergency has been filed with the Civil District Court in connection with today’s cyber security event. pic.twitter.com/OQXDGv7JS4 — The City Of New Orleans (@CityOfNOLA) December 13, 2019
At the same time, the city officials are now working together with the Louisiana National Guard and cybersecurity teams at both the state and federal level, said Kim LaGrue, the city's CIO, during a Sunday press conference.
"A digital forensic investigation is still in progress," said LaGrue. "There is much that we are still learning about this attack. The mechanisms [that were used] and what was significantly compromised. We expect that data loss will be very minimal."
Officials said this weekend that while ransomware was present in the city's system, they were so far unaware of a ransom.
As of Monday, the city had declared that its city hall would be open for normal business hours. Though nola.gov services are still down, a temporary website has been set up to help residents with services, Cantrell said Sunday. Public safety services were largely unaffected by the attack.
City Hall will be open tomorrow, Monday, Dec. 16, for normal business hours. All City employees are expected to report to work as normal on Monday. pic.twitter.com/VMGOrKMavV — Mayor LaToya Cantrell (@mayorcantrell) December 16, 2019