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Trojans Embedded in .svg Files

ID: 2b142c32-b53b-5ba7-b3fe-032f4dcd78c5

STIX ID: report--2b142c32-b53b-5ba7-b3fe-032f4dcd78c5

Feed Name: Schneier on Security

Threat Score
35/100

Date Published: 2025-08-15

Date Updated: 2026-04-19

Author: Bruce Schneier

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Blog post reporting that porn sites are embedding heavily obfuscated JavaScript in .svg images (via a custom JSFuck variant) which decodes into a chain of scripts culminating in Trojan.JS.Likejack; the trojan silently causes browsers of logged-in Facebook users to 'like' specified posts, a social-manipulation campaign noted as not being a new technique.

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