Executive Summary
Magnite (formerly Rubicon Project) is the largest independent sell-side advertising platform, formed from the 2020 merger of Rubicon Project and Telaria. Operating as a major SSP with 4.7B daily impressions globally, Magnite powers programmatic advertising across CTV, display, and video. While positioning itself as a transparent, publisher-focused platform, runtime analysis reveals 21.7% pre-consent tracking and their own website deploys 13+ third-party trackers before user consent. The company openly discloses data selling for targeted advertising and claims 90-day retention with GPC support.
Revenue Threat Profile
4 COLLAPSE VECTORSHow this vendor creates financial exposure. Each score (0-100) reflects observed runtime behavior and documented business practices.
CAC Subsidization
As a major SSP processing billions of impressions daily, Magnite sits at a critical junction in the ad tech supply chain. Measurement corruption can occur when bid stream data leaks advertiser intent signals before campaigns execute, enabling competitors to intercept demand signals.
Signal Corruption
Magnite's integration with 75+ data partners and 86.5M advertisers creates extensive data flow pathways. Publisher inventory data, audience segments, and pricing signals traverse their infrastructure, creating potential for demand signal leakage to competing buyers or platforms.
Legal Tail Risk
With 3K+ direct integrations and operations in 190 countries, Magnite's technical footprint represents significant attack surface. Their acquisition history (SpotX, SpringServe) means legacy codebases and integration points that may harbor security inconsistencies.
GTM Attack Surface
Despite GDPR compliance claims and Data Privacy Framework participation, 21.7% of Rubicon detections show pre-consent firing. Their own website exhibits consent banner violations by loading 13+ tracking vendors before user interaction, contradicting their stated privacy commitments.