Backup System for enhancing the security of information technological control facilities

摘要

A backup device (100) is adapted to conduct a backup of a control device (200), with an interface (104), which may be coupled with the control device (200); a transmission unit (102), adapted to read data from the control device (200) via the interface (104) and/or write data to the control device (200) via the interface (104); a memory unit (108, 116), adapted to store the data read from the control device (104); a backup control unit (102) adapted to instruct the transmission unit (102), to read at least part of a program memory (208) of the control device (200) as first program backup data (120), and to instruct the memory unit (108, 116) to store the first program backup data (120) in a non-volatile way, wherein the backup control unit (102) is further adapted to instruct the transmission unit (202) to read at least part of a program memory (208) of the control device (200) as further program backup data (122, 122a); a comparison unit (102) adapted to compare the first program backup data (120) and the further program backup data (122, 122a); and a warning unit (102) adapted to release a warning, if the comparison unit (102) determines that the first program backup data (120) and the further program backup data (122, 122a) differ.