Thousands of major sites are taking silent anti-ad-blocking measures

It’s no secret that ad blockers are putting a dent in advertising-based business models on the web. This has produced a range of reactions, from relatively polite whitelisting asks to dynamic redeployment of ads to avoid blocking. A new study finds that nearly a third of the top 10,000 sites on the web are taking ad blocking countermeasures, many silent and highly sophisticated.