Security system for improving the security of information technology control systems

摘要

Securing device (100), which is designed to perform a backup of a control device (200), comprising - an interface (104) which is coupled to the control device (200); - A transmission device (102) which is adapted to read via the interface (104) data from the control device (200) and / or write data to the control device (200); - a memory device (108, 116), which is adapted to store the data read from the control device (104); A backup control device (102) which is designed to instruct the transmission device (102) to read out at least part of a program memory (208) of the control device (200) as first program backup data (120) and to instruct the memory device (108, 116) the first program backup data (120) being non-volatile, wherein the backup controller (102) is also adapted to instruct the transmitter (202) to use at least a portion of a program memory (208) of the controller (200) as further program backup data (122, 122a) read; - a comparator (102) adapted to compare the first program backup data (120) and the further program backup data (122, 122a); and - a warning device (102) configured to issue a warning if the comparison device (102) determines that the first program backup data (120) and the further program backup data (122, 122a) differ.