9NEWS: Passwords for Colorado’s voting computers were visible online for months.

Colorado’s Democratic Secretary of State Jena Griswold found out on Oct. 24. Her office only started changing the leaked passwords after the issue was made public.

Voting machines used by county clerks are listed on a spreadsheet on the Colorado Secretary of State’s website. The machines are listed by serial number, county, model and vendor.

Until last week, there was a hidden tab at the bottom of the spreadsheet that, when unhidden, showed one of two passwords needed to make changes to each computer.

Visit 9NEWS for more.