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Method and device for defending against attacks to systems comprising a plug and play function

  • US 8,418,248 B2
  • Filed: 02/25/2009
  • Issued: 04/09/2013
  • Est. Priority Date: 03/11/2008
  • Status: Active Grant
First Claim
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1. A method for recognizing attacks on at least one interface of an automated self-service machine, to which at least one peripheral device of the automated self-service machine is connected, the method comprising:

  • monitoring of the interface to detect changes at the interface;

    if changes occur, calculating a probability of an unauthorized attack on the interface based on the type of change;

    wherein one or more of the following events is taken into consideration in calculating the probability;

    a reliability of a serial number of the at least one peripheral device connected to the interface;

    a reliability of a maker/product combination for the at least one peripheral device;

    a reliability of a device class of the at least one peripheral device;

    a reliable number of devices from a device class of the at least one peripheral device;

    a time interval between removing a device from and connecting a device to the interface;

    a device path or type of connection;

    a time of day at which a device is connected to or removed from the interface; and

    a mode for the automated self-service machine when a device is connected to or removed from the interface, including a customer operation mode or a service mode;

    and wherein if the probability is beyond a defined threshold, defensive measures are introduced.

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