My last place a girl reported a WhatsApp group I was in for inappropriate behaviour. Said all sorts of stuff which was all a load of rubbish about a group she wasn’t in. The group was literally for a few of us who lived close to each other to organise stuff to do outside of work and was rarely actually posted in.
Anyway management lost their minds, emails to all staff were sent, big threats were made “investigations” started, any bloke was getting sideways looks, rumours and tension abound. I got knobbled by management as some sort of ringleader (I wasn’t even a group admin). We all offered to show them the group messages because there was nothing to hide but they didn’t want to know.
Anyway all came out that she had heard something from someone who heard something from someone who heard something etc and none of it even pertained to our work place or even the decade we were in. It all quietly disappeared with no apology for us, no disciplinary for the person who made it up and nobody ever attended a work social or Christmas party ever again.