Audio missing from today's recording (Lecture 4, 17.09.2021)

Unfortunately, the recording of today's lecture (Lecture 4) did not include any audio. Hence, I will not publish it. I'm really sorry about this, but there's unfortunately nothing else I can do. I have been in contact with the IT department to help figure out what caused the issue. Hopefully things will be sorted by next week.

With that said, today's lecture was very similar to last year's Lecture 4 on the same topic (i.e., MACs and integrity, etc.) and this lecture is freely available here (2020) (together with all the other lectures). So if you didn't attend today's lecture in person, please consult last year's recording. Also feel free to send me any questions you might have, either by email or (even better) the discussion page on Canvas.