I assume she was already investigating some of the folks involved like Sidney Powell
Emails and other records first reported this month by The Washington Post and also obtained by The Associated Press show that Powell was involved in arranging for a team from data solutions company SullivanStrickler to travel to the county’s elections office.
Info on the breech came out last year
https://apnews.com/article/2022-midterm-elections-voting-donald-trump-georgia-6c5483c82b47cf402136b39e72326309
I assume she was already investigating some of the folks involved like Sidney Powell
Local election officials, by law, are bound to keep election machines secure
Probably this part of the GA election code. After this incident they replaced the machines that were copied.
https://rules.sos.ga.gov/gac/183-1-12