Glossary

Malvertising

The practice of injecting malicious code into legitimate online advertising networks, so that ads served on trusted, high-traffic websites redirect visitors to exploit kits or phishing pages. It is dangerous precisely because the website itself is not compromised — the malicious content flows through a legitimate ad exchange.

Recent coverage mentioning Malvertising

DA

HIGH

Data Breach

Infostealers Target Anthropic Claude Users via Session Theft

Threat actors are employing various infostealers to compromise Anthropic Claude user accounts via session theft, posing significant risks.

Runtime Rebel Intel

4 min read · Sep 1, 2026

MA

HIGH

Malware

Vidar Stealer & XMRig Campaign Leverages Malvertising, AMSI Bypass

Financially motivated campaign delivers Vidar stealer and XMRig miner via malvertising for cracked software, targeting consumers and SMBs globally.

Runtime Rebel Intel

5 min read · Aug 9, 2026

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