Criminal liability for market manipulation and insider trading is significantly determined by the provisions of European law and is implemented in national regulations. There are often cross-border issues involved, so that foreign law must be taken into account. The public prosecutor's office can make use of the resources of the Federal Financial Supervisory Authority in its investigations. Assets are frozen in early stages of the proceedings. Investors pursue compensation claims parallel to the criminal trial. In this situation, in addition to extensive legal knowledge, coordination in the various fields of defence is necessary to defend against the charges.