I work at a large tech company and we are routinely made aware of phishing scams on LinkedIn using our name – either fake profiles pretending to be an employee or even impersonating one of our actual employees.
People have:
* Tried to sell our product to others, despite not being affiliated with us
* Acted as recruiters for our company
* Tried to get jobs at other companies pretending to have an employment history with us
It's frustrating that we cannot do anything other than report it to LinkedIn, who may or may not take it down eventually.
The next time you are answering a LinkedIn DM, remember that anyone is allowed to write anything on there. None of it is verified.