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Cloudflare details four malicious JavaScript campaigns found on storefronts—affiliate-commission hijacking, clickless affiliate theft, a remote-code backdoor, and a paid-traffic cloaker—that VirusTotal and URLScan largely missed, arguing behavioral ML analysis beats signature scanning for gated, conditionally executing scripts. The detection pipeline combines a graph neural network, a lightweight LLM on Workers AI, and a weighted frontier-model voting ensemble with human review. It is a vendor post promoting Cloudflare Client-Side Security, so evidence is detailed but conclusions favor the product.