JavaScript developers face increasingly sophisticated injection threats in 2025, including supply chain attacks, prototype pollution, and AI prompt injections, which bypass traditional defenses. A comprehensive guide offers framework-specific strategies and emphasizes layered, context-aware security practices to mitigate modern web vulnerabilities. #Polyfillio #SupplyChainAttack
Keypoints
- Attackers have evolved techniques like prototype pollution and AI-driven prompt injections to exploit JavaScript frameworks.
- The Polyfill.io supply chain attack demonstrated how malicious code can infiltrate trusted libraries, compromising major websites.
- Traditional security measures, such as innerHTML sanitization, are no longer sufficient against modern injection tactics.
- Framework developers recommend using sanitization libraries like DOMPurify to protect against DOM-based XSS vulnerabilities.
- Adopting a store raw, encode on output principle and understanding WebAssembly security implications are essential for comprehensive defense.
Read More: https://thehackernews.com/2025/07/why-react-didnt-kill-xss-new-javascript.html