Abstract
Physical security systems - for example locking systems, access control or burglar alarm systems - are increasingly digitally networked. Digital security usually does not keep up with the quality of physical security. Attacks where the physical world can be accessed from the network - unlocking doors, activating access authorizations, triggering false alarms, etc. - are no longer only seen in Hollywood movies. The consequences can sometimes be dramatic for users and operators of the systems. It is not just a matter of failing to achieve the actual protection objective, such as ensuring security against burglary or theft. The availability of the systems is also under attack: Doors can no longer be opened, production downtimes occur and false alarms necessitate shutdowns. To make matters worse, not only has the software in the security systems been successfully attacked recently, the computers in the door locks or cameras are often taken over completely and integrated into botnets for network overload attacks.
Photo credit: Autor OT, Frank Rieger auf der re:publica 2019, Quelle Wikipedia, CC Creative Commons
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