Google released a 1MB AI model that quickly catches malware disguised as PDFs. Magika is an open source file detection system. It doesn't trust file extensions. Instead, it reads the actual content to figure out what a file really is.That means malware disguised as a PDF gets caught. Hidden scripts inside images get flagged. Fake extensions don't fool it.It runs on a single CPU and classifies files in about 5ms. It supports 200+ file types and hits ~99% accuracy across ~100M training samples.It