I wouldn’t say the banks or the top echelons of Greek society are entirely at fault here but they’re unquestionably part of the problem and should bear the costs of cleaning the mess up based on their ability to pay. What Greece really needs is to sort its tax system out, had they done that a while ago they wouldn’t be in the mess they’re in now :
Ask and you shall receive. Sadly it’s not banking-related, may not be effective and IMO contains a faint whiff of desperation about it but still, it’s something.
That’s more just panicking at speculators ganging up on the German financial system than new regulation. What the Germans really need is new and effective government regulation and oversight of their financial markets like the recently-passed Finanzmarktstabilisierungsergänzungsgesetz bill.