# Malicious JavaScript

Published articles for Malicious JavaScript.

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## When scanners miss the attack: how Cloudflare Client-Side Security protects storefronts

DevFeed: [When scanners miss the attack: how Cloudflare Client-Side Security protects storefronts](<https://devfeed.tech/articles/when-scanners-miss-the-attack-how-cloudflare-client-side-security-protects-storefronts-31481.md>)

Original publisher: [Read original article](<https://blog.cloudflare.com/client-side-security-finds-4-malicious-campaigns/>)

Author: Denzil Correa

Published: 2026-09-16T20:06:17Z

Content type: article

Language: en

Sources: [Cloudflare Blog](<https://devfeed.tech/sources/cloudflare-blog.md>)

Topics: [Cloudflare](<https://devfeed.tech/topics/cloudflare.md>), [Machine Learning, Security Attacks](<https://devfeed.tech/topics/machine-learning-security-attacks.md>), [Security](<https://devfeed.tech/topics/security.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [application-security](<https://devfeed.tech/tags/application-security.md>), [attacks](<https://devfeed.tech/tags/attacks.md>), [client-side-security](<https://devfeed.tech/tags/client-side-security.md>), [cloudflare](<https://devfeed.tech/tags/cloudflare.md>), [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [developer-platform](<https://devfeed.tech/tags/developer-platform.md>), [developers](<https://devfeed.tech/tags/developers.md>), [ecommerce](<https://devfeed.tech/tags/ecommerce.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [machine-learning](<https://devfeed.tech/tags/machine-learning.md>), [malicious-javascript](<https://devfeed.tech/tags/malicious-javascript.md>), [page-shield](<https://devfeed.tech/tags/page-shield.md>), [security](<https://devfeed.tech/tags/security.md>), [security-research](<https://devfeed.tech/tags/security-research.md>), [virustotal](<https://devfeed.tech/tags/virustotal.md>), [workers-ai](<https://devfeed.tech/tags/workers-ai.md>)

### AI overview

Cloudflare describes how its Client-Side Security machine learning model detected four malicious JavaScript operations involving eight payloads in live storefront traffic. The post says humans verified the findings after automated detection, while most payloads were absent from VirusTotal and received no malicious verdict from URLScan.

### Source excerpt

A modern storefront can look healthy while malicious JavaScript quietly siphons revenue, hijacks clicks, or rewrites analytics. See how Cloudflare's machine learning models surface evasive client-side attacks for analyst investigation.