JavaScript was running in the browser until Ryan Dahl decided to create Node.js. Nowadays it is a big platform, and it can run also WebAssembly. This is just a

JavaScript was running in the browser until Ryan Dahl decided to create Node.js. Nowadays it is a big platform, and it can run also WebAssembly. This is just another step in that direction where is the OS the one running that code. Does it have problems? Yes. Adding more complexity to the kernel will open new attack vectors for breaking its security. But that is true for any added layer, even in the hardware which complexity has brought Meltdown and Spectre. Running JavaScript in your kernel is a lot riskier than running it in your app. The good news is that WebAssembly is created with sandboxing in mind. I hope they have learned some lessons (https://en.wikipedia.org/wiki/Java_security https://en.wikipedia.org/wiki/Java_security).