Vaudit, a San Francisco-based AI-powered ad auditing platform, has raised $7.3 million in a seed funding round led by Mucker Capital, with participation from AVV, AppWorks, Plug and Play, and Kyber Knight. The company, formerly known as BlokID, also appointed Piotr Korzeniowski as Chief Operating Officer to drive growth and product development.
Vaudit raises $7.3M in seed funding led by Mucker Capital.
AI audit engine monitors $150M+ in annualized ad spend.
Detects up to 30% monthly overcharges in digital campaigns.
Serves 1,000+ clients, including Accenture, HP, and SAP.
Piotr Korzeniowski named COO to scale operations.
Addresses ad fraud, estimated at $28.6B in U.S. losses.
Vaudit’s real-time AI audit engine monitors digital advertising campaigns 24/7, identifying billing anomalies and generating legally defensible evidence to recover wasted ad spend. The platform has audited over 558 million advertising events, uncovering up to 30% in monthly overcharges for clients. As Michael Hahn, Founder and CEO of Vaudit, stated, “We’re excited to partner with adtech veterans like Omar and Binh to pioneer a new standard in digital advertising accountability. The online advertising industry has normalized waste and fraud for far too long, with clicks that don’t track, campaigns that overspend, and billing that goes unverified.”
The oversubscribed $7.3 million round, bringing Vaudit’s total funding to $8.5 million after a $1.25 million pre-seed, includes notable adtech investors like Omar Hamoui, founder of AdMob (acquired by Google for $750M), and Binh Tran, co-founder of Klout (acquired for $200M). Omar Hamoui, Partner at Mucker Capital, noted, “Vaudit is solving a huge problem that sits quietly in nearly every marketing budget. Digital advertising has become too complex and too opaque. Mike and the Vaudit team are building a category-defining tool that will bring much-needed clarity and financial discipline to a space long overdue for accountability.”
Piotr Korzeniowski, appointed as COO, brings extensive adtech experience, having scaled Clearcode to a $10 million exit and Piwik PRO to $14 million in ARR. He emphasized, “While fraud prevention in adtech is an established category, no one has truly looked at the bill—scrutinizing whether platforms actually deliver on what they were set up to do. Vaudit addresses that blind spot. I’m excited to help shape the product and scale the business on the solid foundation Mike and the team have built.” The funding will enhance Vaudit’s agentic workflows, optimize ad spend, and refine AI models for precise anomaly detection.
Serving over 1,000 clients, including Accenture, HP, Huawei, and SAP, Vaudit acts as an embedded audit layer, reconciling ad spend with actual billing from platforms like Google and Meta. With ad fraud losses reaching $28.6 billion in the U.S. last year, Vaudit’s platform empowers businesses to dispute overcharges and recover funds, setting a new standard for transparency in digital advertising.
Vaudit’s innovative approach and strong backing position it to redefine adtech accountability. By leveraging AI to ensure transparency and efficiency, the company addresses a critical need in an industry plagued by waste, delivering measurable value to its growing client base.
Vaudit is a real-time AI audit engine that detects and documents digital media waste, empowering businesses to challenge billing discrepancies and take action on inaccurate spend. Founded by adtech veteran Michael Hahn, Vaudit enables brands and agencies to recover lost value, verify spend, and bring transparency to performance marketing.
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