We do not know what firms have come under attack via a Typer Mismatch Bug,
a zero-day attack, that urged Google to patch their browser JS-engine.
Threat is inherent on using a browser monoculture (Google Chrome/Chromium),
inside another mono-culture, i.e., Windows 10 (latest version)
It was Kaspersky's Boris Larin to report this so-called PuzzleMaker attack.
Re:
https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/JS (JavaScript) will be world's biggest can of code-worms ever for some time to come.

polonus