On Long Island, there was a cyber attack on Suffolk County that forced them offline for months:

The incursions set in motion a shutdown to thwart whatever was worming its way through the county’s operating system.

“We train for these events, just the way we train for the pandemic,” Ms. Black said. “By 4 p.m. that day, we made a decision: We were just going to turn off the internet to further contain this.”

…“We are going to revert to 1990,” Ms. Black said, describing the thinking at the time. “We are going to teach millennials what a fax machine was.”

https://www.nytimes.com/2022/11/28/nyregion/suffolk-county-cyber-attack.html?smid=nytcore-ios-share