this has been a challenge before the Metoo movement, the movement just gave it public notice. Sadly we are also seeing it in women's sports.
Even more sadly is that fake charges take away from the real ones. A local company had a fake charge years ago. The manager told me, it cost the company $50,000. $42,000 in lawyer fees,, $8000 settlement. The company could have pushed farther and proven innocent. However fact is even if the accuser was told to pay all expenses, she didn't have the money. So would have cost company more not to settle.
And of course once someone is accused, most everyone believes the charges and shuns the accused. Sadly the charges have never really been narrowed down to what is harassment and what isn't.