Technically, libel and slander are grounds for a civil suit, not criminal. Death threats and impersonation/identity theft are criminal but can be pursued civilly as well. Victims need to start lawyering up and getting rulings that bankrupt the trolls, and put them under restraining orders for their internet activity. If they persist put them under court orders barring them from accessing the internet, and throw them in jail for criminal contempt if they violate the court orders.
The standard of proof for civil suits is significantly lower than beyond a reasonable doubt, so the main barrier is getting internet sites and ISPs to release information that can identify the anonymous offenders.
And once again, this is not a feminist issue. Doxxing an SWATting are rampant against males as well. From Wikipedia:
* In the past, there have been swatting incidents at the homes of Ashton Kutcher, Tom Cruise, Chris Brown, Miley Cyrus, Justin Bieber and Clint Eastwood.
Brian Krebs has suffered various harassments for several years now, as documented here: https://krebsonsecurity.com/20...
Basically once you reach a certain level of fame or notoriety on the internet, you are likely to piss off someone who thinks it's fun to engage in these kinds of activities.