the point is that there is a LinkedIn page. But all employees are directors or VP's - not a single engineer that works at Rsecurity.

Unlikely that they are a front to a US operation. But very likely that it's a start-up that leverages the currently toxic climate in order to get themselves in the news. Making half baked attribution claims is a perfect way to do so. One might even say that not doing so would be leaving money on the table.