Malvertising is a thorn in the side of legitimate publishers that rely on ads to generate revenue online.

Malvertising involves the abuse of online advertising to spread malware. The typically involves injecting malicious code or malware-laden advertisements into legitimate online advertising networks.

Malicious adverts served through advertising networks can end up being displayed on legitimate websites through pop-ups, drive-by downloads, or redirects to exploit kits. Visitors become diverted to fraudulent domains, phishing pages, and malware payloads as a result of the cybercrime tactic.

The New York Times, the London Stock Exchange, Forbes, The Onion, and The Daily Mail have all fallen prey to malvertising campaigns in the past.

Cheq, an online ad verification specialist, estimates that marketers will lose $23 billion this year in online ad spending because of fraud. However, advertising networks are increasingly aware of the problem and are attempting to filter out bad ads.

But there’s still more work to be done in order to protect the legitimate advertising ecosystem, according to a new study released on Tuesday by media and publisher protection specialist Confiant.

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