Arielle Garcia
Chief Strategy Officer at Check My Ads Institute
Co-founding Check My Ads Institute and leading high-profile campaigns that expose how programmatic advertising funds disinformation, pressuring major brands and platforms to adopt stronger brand safety and supply chain transparency standards.
Last updated May 30, 2026 by the ATDb Editorial Team
Arielle Garcia is the Chief Strategy Officer and co-founder of Check My Ads Institute, the advertising industry's most prominent watchdog organization dedicated to exposing how programmatic advertising funds disinformation, extremism, and harmful content. Alongside co-founder Nandini Jammi, Garcia has redefined what brand safety advocacy looks like — moving it from a passive compliance checkbox to an active, public accountability campaign that names brands, platforms, and ad tech intermediaries by name. Her work has directly influenced policy changes at major platforms and prompted significant advertiser pullbacks from problematic content ecosystems. Before co-founding Check My Ads, Garcia built deep expertise inside the advertising industry, working in programmatic and media roles that gave her firsthand knowledge of how the digital ad supply chain operates — and where its accountability gaps lie. That insider perspective has made her a uniquely credible critic, capable of translating complex ad tech infrastructure into public narratives that resonate with both industry insiders and mainstream audiences. Her campaigns have targeted major platforms including Twitter/X and have pressured global brands to scrutinize their supply path more rigorously. Garcia has become one of the most cited voices on the intersection of ad tech, media integrity, and platform accountability. She is a frequent speaker and commentator on topics including programmatic transparency, the monetization of misinformation, and the responsibilities of the advertising industry in shaping the information ecosystem. Her influence extends beyond watchdog activism into genuine standards-setting, as her public pressure campaigns have contributed to industry-wide conversations about supply chain transparency and ethical advertising practices.
Privacy Officer / Programmatic Advertising Professional
Various media and ad tech companies (Prior to 2021)
- Co-founded Check My Ads Institute, the AdTech industry's leading independent watchdog organization
- Led campaigns that pressured major advertisers to pull spending from Twitter/X following policy and moderation changes under Elon Musk
- Exposed programmatic advertising funding of disinformation sites, resulting in measurable policy changes at ad tech platforms
- Established Check My Ads as a credible industry voice influencing brand safety standards across the programmatic ecosystem
- Regular contributor and author at Check My Ads Institute (checkmyads.org)