Rename any .exe to .pdf right now. Email it to yourself. Your email client will probably show a PDF icon. That file extension is a label anyone can type. Your operating system still trusts it. Attackers know this. Google processes hundreds of billions of files per week across Gmail, Drive, and Safe Browsing. They built a tool years ago to see through fake extensions. It's called Magika, they open-sourced it, and the way it works is worth understanding. For 50 years, the standard for detecting…