Rob Farrow wrote a really useful paper that covers 3 codes of ethics https://files.eric.ed.gov/fulltext/EJ1103941.pdf but I would also like to put in a good word for https://aoir.org/ethics/ who have done sterling work that reflects the moving playing field of Internet Ethics.
Next I’m going to make a radical suggestion that may or may not work in your context:) I found that a really good way to engage students in critiquing systems and tech from ethical and human perspectives was to find some systems/platforms of which they had personal and sometimes shared experience. I have done this with Information Systems students at Masters level and Business School Y1 UG students from various programmes. In the first case we looked at systems like the Uni registration system, Turnitin, Blackboard and found that personal experiences sharpened their critique especially when shared – Turnitin was particularly provocative. Of course this may not be popular with Uni administrators 🙂 In the second case, we used the Facebook platform as the subject of critique along with supporting exercises that did not require all students to be logged in or friend us. If it was today, I’d probably choose Instagram or Whatsapp. Discussing why we didn’t require all to join was quite generative.