A German bank was investigated in 2010 [0] for allegedly planting discriminating evidence on the PC of a manager who they wanted to get rid of. I don't know exactly the outcome of this, but that bank was involved in a lot of scandals at that time.
Officers of Wells Fargo, Credit Suisse, and HSBC all seem to get away with a very great deal.
I had gathered that HSBC, in particular, was (in the past, and maybe still?) the favored financial conduit of CIA projects, making investigating anything there what is called a "career-limiting activity" for any incautious FBI agent.
[0] https://www.businessinsider.com/details-on-the-wild-allegati...