Some gems from this article:
Investigation Finds Jena Griswold and Her Office Violated State Security Protocols, Resulting in Password Leak
https://www.westword.com/news/colorado-official-violated-security-protocols-leading-to-leak-report-22748944
1. The office used to keep its voting systems inventory, including equipment passwords, in a Microsoft Access database. But in August 2021, a former employee responsible for maintaining the inventory recommended that it be migrated into an Excel file instead.
2. In the Excel file, the former employee created hidden tabs that she used as "scratch paper" to help clean up the inventory on the visible tabs, says the report, whose authors interviewed past and present employees. The hidden tabs included the passwords. The former employee "never told anyone that there were hidden (tabs) in the" file, as they did not "serve any team-wide purpose," the report notes.
3. No one on the VS Team appeared to know that (tabs) could be hidden.