I've read all your comments on the various threads and a central theme seems to be the following question: how does sexism fit into all of this, isn't this just harassment/stalking? It's a fair question. Recall that sexism is discrimination based on sex OR behavior that fosters stereotypical/hurtful attitudes and roles. The attacker did both here. He attempted to drown out the technical ability of the victim by, during her technical presentation, spamming pictures that quite literally turned her into an object. This is a manifestation of classic behavior where men value women for their appearance only and everything else is ignored. Had that attacker had his/her way, this would have been the reality; all the attention would have been on her appearance and no attention would have been paid towards her technical presentation. His/her goal could not be more clear. To tie the goal back to sexism: what the attacker wanted is both a distinguishing treatment based on her sex (the first definition) AND a behavior that encourages ignoring the technical ability of women in favor of focusing on their appearance (the second definition).

I hope this makes my use of the word sexism clear. I welcome further communication here in this thread or at my personal email, which can be found in my profile.