Auditor Timothy M. O'Brien, CPA, was elected as Denver's 24th Auditor to serve as a check and balance on Denver’s “strong mayor” form of municipal government.
Denver, CO
Joined October 2016
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During a Denver City Council budget hearing, a resident thanked Auditor O’Brien for including the Transportation and Mobility Special Revenue Fund in the 2027 Audit Plan.
Your voice matters. Your input helps shape accountability in Denver.
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The Civil Service Commission is in a better position to process police, fire, and Public Safety candidates consistently and securely, according to a follow-up report from Denver Auditor Timothy M. O’Brien, CPA.
Read more: denvergov.org/Government/Age…
ALT Press release headline: police, fire candidate-hiring process strengthened.
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Thank you to everyone who voted to approve this measure and to those who support our office every day. We're proud of the work we do and of the positive impact we have on people's lives.
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9News asked Auditor O’Brien about the stalled City Budget Process audit, as the city has not provided requested documents.
“What we are asking for is what supports the budget document, the narrative that goes with the budget, and how did you get there.”
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Accountability That Lasts.
An audit plan is more than a list of what we intend to examine. It reflects a standard for how independent oversight should work.
The people who hold public office change. The standard for accountability should not.
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Accountability that lasts. Behind the scenes.
Denver’s 2027 Audit Plan examines the systems, resources, and operations that keep city government running.
Accountability matters behind the scenes, too.
Explore the full 2027 Audit Plan: denvergov.org/Government/Age…
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Accountability that lasts. Where Denver moves.
From sidewalks to airport trains and infrastructure projects, Denver’s 2027 Audit Plan examines the systems and investments that keep our city moving.
Explore the full 2027 Audit Plan: denvergov.org/Government/Age…
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Accountability that lasts. Where Denver lives.
Denver’s 2027 Audit Plan focuses on city services that affect residents’ everyday lives.
Explore the full 2027 Audit Plan: denvergov.org/Government/Age…
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This concludes the Artificial Intelligence Governance discussion.
Read the full report: denvergov.org/Government/Age…
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Auditors made 23 recommendations to strengthen AI oversight, risk management, monitoring, and data protection.
✅Technology Services and the airport agreed to all 23.
#AIGovernanceAudit
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Denver International Airport has no formal AI governance framework.
Auditors found:
⚠️ AI risks are not formally assessed.
⚠️ Vendor oversight lacks AI-specific controls.
⚠️ AI-use monitoring and data-loss prevention need improvement.
#AIGovernanceAudit
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Auditors found weaknesses in the city’s AI governance:
⚠️ Risk-management processes lack formal documentation.
⚠️ AI inventories are incomplete or inaccurate.
⚠️ Data-loss prevention controls were not applied to all city computers.
#AIGovernanceAudit
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Now on Denver’s independent Audit Committee agenda: Artificial Intelligence Governance.
Auditors examined how the city and Denver International Airport oversee AI use, manage risks, and protect data.
#AIGovernanceAudit
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This concludes the @DenverMuseumNS Follow-Up discussion.
Read the full report: denvergov.org/Government/Age…
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City and board oversight have improved, but accountability gaps remain.
⚠️ City-museum agreements are not finalized.
⚠️ The process for determining annual city funding remains undocumented.
⚠️ Some board governance policies remain incomplete.
#DenverMuseumNSFollowup
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✅ The museum fully implemented all 8 emergency preparedness recommendations.
The @DenverMuseumNS strengthened its emergency plans, evacuation procedures, staff training, and drills to better protect visitors, employees, and its collections.
#DenverMuseumNSFollowup
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The museum has improved collections management and physical key controls.
However, gaps remain in inventory training, data monitoring, and access reviews.
⚠️ These weaknesses could affect record accuracy and the security of collections.
#DenverMuseumNSFollowup
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The October 2026 independent Audit Committee meeting is underway
Now on Denver’s independent Audit Committee agenda: the @DenverMuseumNS Follow-Up.
Auditors reviewed 35 recommendations from our 2024 audit
✅ 20 fully implemented
🟡 10 partially implemented
❌ 5 not implemented
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Accountability That Lasts.
The 2027 Audit Plan reflects a standard for independent oversight: professional, independent, objective, and connected to the community.
The people in office may change. The standard for accountability should not.
Watch the video
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