Cybercrime Polyfill Supply Chain Attack Impacting 100k Sites Linked to North Korea The 2024 incident was initially linked to China, but an infostealer infection has now revealed North Korean involvement. Eduard KovacsMarch 12, 2026
Malware & Threats Over 380k Hosts Still Referencing Malicious Polyfill Domain: Censys Censys has discovered more than 380,000 hosts, including major platforms, still referencing the malicious polyfill.io domain. Ionut ArghireJuly 3, 2024
Malware & Threats Polyfill Domain Shut Down as Owner Disputes Accusations of Malicious Activity Namecheap shut down polyfill.io amid reports of malicious activity, but the Chinese owner claims it has good intentions. Ionut ArghireJune 28, 2024