polyfill-io
Safeguard articles tagged "polyfill-io" — guides, analysis, and best practices for software supply chain and application security.
4 articles
polyfill.io (2024): What Happens When a CDN Domain Changes Hands
A factual account of the 2024 polyfill.io incident, in which a widely embedded JavaScript CDN domain was acquired and began serving malicious code to a large number of websites.
Polyfill.io supply chain attack
How a domain sale turned a trusted CDN into a malware vector for 100,000+ sites — and what the polyfill.io incident teaches defenders about third-party script risk.
Anatomy of the polyfill.io CDN Compromise
In June 2024, a single acquired domain turned a free CDN trusted by over 100,000 sites into a live malware injection point — with no dependency update required.
Polyfill.io CDN Supply Chain Attack: 100K+ Sites
After a domain handover, polyfill.io began serving malware to more than 100,000 sites. Here is the attack chain and what the incident teaches us.
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