Put simply, trust is hard to gain but easy to forfeit. In addition, where a central bank takes on the task of lending to governments it neutralises the disciplining effect of the capital markets. Bad fiscal policy is not penalised while good fiscal policy is not rewarded through lower financing costs.
The Bundesbank has used its protective measures to successfully fend off the attacks aimed at it so far. Last year alone, we intercepted around 10,000 e-mails infected with malware and stopped a hundred thousand unauthorised attempts to access the Bundesbank infrastructure.