I don't get it. I worked with many female developers, female CTOs, female IT directors. In 10 years I've not seen any harassment towards them. I've never even heard general statements from male developers, like "women can't code".
Am I oblivious, or maybe a different sub-industry?
If you're close to any of them, it may be interesting to ask them. A lot of women in technology (and women in general, and also people in general) choose to not talk much about bad experiences, for many reasons, so there is an underreporting effect - and a lot of harassment also isn't in obvious forms witnessed by other people. Some women are fortunate to not have had a lot of problems, of course - but if you ask a few, especially ones who speak or write publicly about their work, you'll probably hear some painful stories.
So true. In a similar but infinitely more serious vein, men often don't hear about women's experiences of violence at the hands of men. Unless you're a particularly approachable man, you might, like me, be surprised at how many women you know have been touched by this problem.
I'm not sure if this statistic is global, but for actual abuse, one in four women has been a victim. If the rate is so high for close-up abuse, you can imagine how it will be when you add online anonimity to the problem.