Actually it's kind of the opposite. Right now the banks know how easy it is for someone to end up getting scammed, so they try to be really strict on picking up on potentially fraudulent transactions precisely because they can't trust endpoint security.

If they have something like this in place, they will have greater confidence in the transaction being genuine and less likely to block it. In this case, for such a large amount of money, relative to the size of your account, they might still be very cautious about it, but it would be less likely to cause an issue.