Fallen far, or maybe we are just more aware now, but anyway, I don't think that a lecture in ethics at university will fix things. That's:

(A) way too late, and

(B) without a strong character to begin with, this lecture will simply become a "necessary chore" for students, and basically go in one ear, and out the other ear. (Does that saying/phrase translate to English?)

By the time people start their undergrad, if they are not already at least trying to act ethically, that ship has sailed for most. Their upbringing and education did not manage to drill that into them before. I see it as more of an early childhood and parenting topic. If the parents are not leading by example and teaching their children ethics, then the children are often just going with the flow, not swimming against the current to uphold ideals. Why would they, if the other way is easier. I think it is rare, that people adopt ethics that they have not grown up with / raised according to.

So I would advocate ethics as a mandatory subject at school, if not primary school already.