Comment by gspencley

I replied to someone else with the same response. I'll repeat it here. The point of my reply wasn't to do with MFA codes, specifically, but the fact that MALWARE can take screenshots in order to harvest things, such as MFA codes or anything else. Preventing screenshots is likely, in my opinion, a defence against malware harvesting anything that way. Your online banking can present a lot of sensitive information visually that could be used for things like identity theft etc.

And yes, there are other ways that malware can harvest information and if your device has been root-kitted you're screwed no matter what. But the fact that there are 100 ways to attack you doesn't mean the banks don't see value in trying to prevent 50 of them.