How we train AI to uncover malicious JavaScript intent and make web surfing safer

Cloudflare introduces an AI-powered enhancement to Page Shield that detects malicious JavaScript intent—including Magecart, cryptomining, and generic malware—by parsing code into syntax trees and classifying it with a graph neural network. The post explains training and evaluation at scale (handling obfuscation, imbalanced data, and offline validation), deployment safeguards (staging/shadow mode), efficiency via AST-based caching, and relevance for meeting PCI DSS v4 client-side security requirements.