These PowerPoint presentations can be viewed with Slideshare.net and also downloaded. I do request that you ask permission before using them, but will almost always extend permission.
Note: There is some overlap in presentations in that some of the same slides are used in different presentations
Online Safety 3.0: A presentation for teachers at international schools
Online Safety 3.0: A presentation for parents and teachers
Digital Citizenship and Media Literacy: A presentation for high school and middle school students