Any examples of a Meltdown or Specter attack through the browser?

Question

JavaScript

Google gives out so far only theoretical examples of attack possibilities, and also a screenshot with a dump of mozilla passwords flashed on someone's twitter. But is there some kind of Proof-of-concept so that you can run it in your browser and check if the contents of some memory area were calculated or not?

Answer 1

Pray to the gods that it would not come to the implementation of a specific and accessible to everyone, the Internet will change dramatically.

Answer 2

Specter in JavaScript is (allows you to receive data from the browser), but not in the public domain.

Answer 3

Chinese checker for Specter on js
https://xlab.tencent.com/special/spectre/spectre_c...