All the big browser attacks require exploit chains, and this is a component for creating an exploit chain. The best exploit chains can go all the way from a web

All the big browser attacks require exploit chains, and this is a component for creating an exploit chain. The best exploit chains can go all the way from a web page's JS to complete root access (this was achieved on Chromebooks at one point in the last couple years, using webassembly as one of the hops in the chain)