The Denver district attorney has launched an investigation into how a spreadsheet of voting system passwords ended up on the Colorado secretary of state’s website earlier this year. The DA’s office on Monday would not divulge additional details of the probe beyond confirming an open investigation.

The Colorado Secretary of State’s Office has hired a new law firm to investigate how passwords to Colorado’s voting machines ended up online. Attorneys Beth Quinn and J. Mark Baird with the law firm Baird Quinn LLC will look into the security breach.

Colorado officials confirmed passwords to election equipment have been updated more than a week after partial passwords were posted online.

Colorado's Secretary of State, Jena Griswold, refuses to resign over a password leak, and an external investigation is pending post-election.

Last month, the Colorado Secretary of State’s Office said it inadvertently posted a spreadsheet to its website with a hidden tab including voting system passwords.

The Denver district attorney’s office has opened an investigation into the leak of voting system passwords that were posted to a Colorado state website in June before being taken down last month