Brown Note: Basilisk fractals, and their audible, etc., equivalents, which is to say, various forms of sensory input that can take advantage of cognitive bugs to actually crash your mind – and, at least theoretically, can implant thought-virus programming, although that capability’s never yet been seen in the wild. Most modern (artificial or modified) cognitive architectures include protection against known basilisk hacks, but known is, regrettably, often less than all. And baselines are still vulnerable, as are people who don’t keep up to date with Cognitive Threats Monthly. Apply your service packs, kids!
Doing it with a thought-virus that is implanted into the mind using regular educational axiom feeds or other mind-editing tech is too trivial to even mention.