Cybersecurity researchers have identified a set of 13 malicious Composer theme packages on Packagist that are designed to inject JavaScript into Vietnamese movie and comic streaming sites that install those libraries and initiate the deployment of spyware aimed at unpatched iOS devices.

“The injected code runs two operations against a site’s visitors: a mobile ad-fraud and gambling-redirect chain, and, on iPhones, a WebKit-to-kernel exploit chain that installs spyware,” Socket security researcher Kush Pandya said.

The activity is assessed to be part of a campaign that was first documented by the application security company back in March 2026 that leveraged six malicious Packagist packages posing as OphimCMS themes to redirect…