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384,000 Sites Pull Code From Sketchy Code Library Recently Bought By Chinese Firm


An anonymous reader quotes a report from Ars Technica: More than 384,000 websites are linking to a site that was caught last week performing a supply-chain attack that redirected visitors to malicious sites, researchers said. For years, the JavaScript code, hosted at polyfill[.]com, was a legitimate...

On June 25, researchers from security firm Sansec reported that code hosted on the polyfill domain had been changed to redirect users to adult- and gambling-themed websites. Even then, content delivery networks such as Cloudflare began automatically replacing pollyfill links with domains leading to safe mirror sites. The findings underscore the power of supply-chain attacks, which can spread malware to thousands or millions of people simply by infecting a common source they all rely on.

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