Method for Secure Operation of a Computer Unit, Software Application and Computer Unit

A method for operating a computer unit having a processor on which a software application can run, wherein the method comprises the following steps:

• upon invoking the software application on the computer unit or upon carrying out a transaction with the software application, the step of checking whether the computer unit has been restarted since the last invoking of the software application;
• carrying out a first form of authentication for starting the software application or for carrying out the transaction with the software application if the computer unit has not been restarted since the last invoking of the software application;
• and
• carrying out a second form of authentication for starting the software application or for carrying out the transaction with the software application if the computer unit has been restarted since the last invoking of the software application.

A software application which is designed for running on the processor of a computer unit, wherein the software application is further designed for:

• upon invoking the software application or upon carrying out a transaction with the software application on the computer unit, checking whether the computer unit has been restarted since the last invoking of the software application;
• requesting a first form of authentication for starting the software application or for carrying out the transaction with the software application if the computer unit has not been restarted since the last invoking of the software application;
• and
• requesting a second form of authentication for starting the software application or for carrying out the transaction with the software application if the computer unit has been restarted since the last invoking of the software application.