Surveillance Risks in Ad-Based Technologies (citizenlab.ca)

• Real-time bidding protocol vulnerabilities
• Cross-platform data aggregation methods
• Regulatory challenges for GDPR enforcement

"A new study reveals how advertising technology infrastructure is leveraged for unauthorized mass surveillance and profiling. Real-time bidding (RTB) protocols are exploited to harvest user data across platforms, creating persistent digital dossiers. This mechanism bypasses traditional security boundaries and poses a direct risk to user anonymity and European digital autonomy frameworks."