The next time this happens tell that screener that you want to see the airline GSC that is on duty. They are the (generally) english speaking airline employee that is their to monitor the "goings on" at the security check points. If this procedure is improper they will advise the screener that they may not do this. If they agree to it then at least you can blame the airline as well and perhaps get some type of compensation. And finally, if this doesn't work then commence with the moaning and groaning. I think you should also throw a few grinding motions from your pelvic area when they get near you. That will be the quickest you've ever been groped I guarantee!!!