Name changed as this is massively outing of my bosses are reading! Also, more of a WWYD than an AIBU but posting for traffic.
I'm a senior HR person in my organisation; am currently supervising the investigation of misconduct by a maverick member of staff.
Said member of staff has now started researching my life including making threats to contact my universities and professional body to suggest I've fraudulently claimed qualifications and don't deserve professional membership. FWIW I am legitimately very well qualified.
I'm not concerned about him looking at my qualifications but I am nervous about what he might do next to 'discredit' me ("bring you down" was the actual phrase used). I've deleted my social media (sadly, I have a lot of family abroad and it's easy to keep in contact) and reported to my boss.
I really don't know what to do next. I know what the policies are about grievances etc but I'm not sure what it would achieve and I don't want to stoke the fire- I suspect he has mental health problems. That being said he's manipulative, condescending (especially to young women) and I feel I have a responsibility to raise it more formally so it's recorded and can be reported to future employees.
I feel like I should know better than to get upset about this- I've don't nothing wrong and just need to pull my big girl pants up!