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The Role of Modern Cryptology for IT Security IT Security The world is getting smaller as a result of expanding global networks. The internet community is becoming bigger and bigger, and there are increasing opportunities for exchanging information and doing business worldwide. Home banking, e-commerce, e-government etc. offer great potential for innovation. The internet is in principle an open medium. Nevertheless it has to be ensured that internet applications like, for instance, a digitalized financial transaction or a digitalized administrative act are legally binding and cannot be forged or manipulated. Generally, information technology (IT) applications require security measures. Data has to be protected against loss, unauthorized access or manipulation. Countermeasures against viruses, Trojan horses, denial of service attacks etc. have to be implemented. The realization of IT security in practice must be based on an analysis of the entire system concerned, including the environment of the IT. Once implemented, it requires continuous monitoring and supporting management. |
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