The Media Trust

The Media Trust, founded in 2005 and based in McLean, Virginia, works a corner of the attack surface that most security tools don’t reach: the third-party ad-tech and content supply chain that runs on top of publishers’ and advertisers’ own websites and apps. Malicious actors have long used the ad ecosystem — a chain of ad exchanges, tag managers, creative assets, and real-time bidding partners that publishers themselves don’t fully control — to deliver malware, redirects, and scams to site visitors, a technique known as malvertising. The Media Trust continuously monitors that supply chain and blocks malicious ad creative and redirects in real time, alongside data-governance scanning (catching unauthorized data collection embedded in third-party tags) and creative QA automation.

The company’s reach is substantial for its size: it describes itself as trusted by the majority of digital media leaders, spanning publishers, ad-tech platforms, mobile app developers, commerce media, and advertisers. That claim was reinforced in January 2026 by a publicly announced expansion of its partnership with Microsoft, extending its threat detection and mitigation coverage to Microsoft’s own owned-and-operated publisher properties — a concrete, independently reportable data point rather than a vague marketing statement.

Financially, The Media Trust has operated for two decades on relatively modest disclosed funding ($4M raised in a single 2011 round), which suggests a company that reached sustainability through revenue rather than continued venture funding — consistent with roughly 68 employees serving a large customer base in a narrow, specialized niche.

For security and trust-and-safety teams at publishers or ad platforms, The Media Trust addresses a genuine gap: standard web application firewalls and endpoint tools don’t see malicious activity injected through the ad-serving chain, because it often bypasses the publisher’s own code entirely.