Ad quality, malvertising, and brand safety

In this lesson you will

Explain creative-borne risks: malvertising, auto-redirects, and heavy creatives.
Map defenses and the link between supply-chain hygiene and ad quality: clean ads.txt / sellers.json / schain reduces the unauthorized paths that carry bad ads.

A bad ad does not just annoy users, it can redirect them to a scam or hijack the page. And the door it walks through is almost always an unauthorized supply path. Supply-chain hygiene is ad-quality control.

The creative-borne risks

Malvertising: an ad carrying malicious code.
Auto-redirects: an ad that forcibly navigates the user away from the page.
Heavy creatives: oversized ads that slow the page and burn data.

Key idea

Clean ads.txt, sellers.json, and schain reduce the unauthorized paths that carry bad ads. Unauthorized and deep-reseller paths are where bad demand sneaks in, because no one is accountable for them. Tightening your supply chain (SPO) is also a brand-safety control.

Quick check

How can cleaning up your ads.txt reduce malvertising?

Note

In an audit, UNAUTHORIZED findings and high reseller / hop counts quantify exactly this exposure. Run one and read the number.

Key concepts

Malvertising and auto-redirectsHeavy creativesSupply-chain hygiene as an ad-quality controlUnauthorized paths as the opening for bad demand

Going deeper

To really lock this in: trace a malvertising incident back to the unauthorized reseller path that admitted it.

Where this leads

ANALYZE

UNAUTHORIZED findings and high reseller / hop counts are the openings bad demand exploits. Run an audit and quantify the exposure.

Open →

DEBUG

Craft an ads.txt with an unauthorized reseller and show the flagged path.

Open →