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Computer science --- Computer architecture. Operating systems --- Information systems --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- DES (data encryption standard) --- informatica --- maatschappij --- informatiesystemen --- informatica management --- OS (operating system) --- computernetwerken

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ETRICS: Security Remains a Moving Target Welcome to the proceedingsof ETRICS2006.C- sidering the progress of IT technologies, security is still one of the most vibrant and developing areas in computer science. ETRICS marks both the end of the six-year Priority Program (SPP 1079) of the German ResearchFoundation (DFG) and a call for intensi?edresearchonsystem-orientedsecurityand privacy issues. Protecting information and services from malicious use is essential for their deployment and acc- tance. While the main protection goals denoting con?dentiality, integrity and availability are of a G¨ unter Muller ¨ general nature, their relevance, realization and - forcement vary depending upon the underlying - chitectures, technologies and applications. By ca- gorizingthetechnologicaldevelopmentaccordingto yesterday,today and tomorrow ,three time spans result: Yesterday, mainframe computing achieved security by means of mechanisms to prevent unauthorized access to data and thus safeguard con?dentiality. Themodelofsecuritymechanismsoriginatedinthe conceptofamedievalcastle,wherethegatewasthe access point and the crest on the shield was the ac- Gerhard Schneider cess credential. Security takes the form of physical and logical access control, where authentication is carried out by a ?rewall and achieved by, e.g., passwords and biometry. Aut- rization is even less sophisticated than in a castle and usually carried out by simple access control lists.

Computer science --- Computer architecture. Operating systems --- Information systems --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- DES (data encryption standard) --- informatica --- maatschappij --- informatiesystemen --- informatica management --- OS (operating system) --- computernetwerken

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Ubiquitous computing --- Computer security --- Computer Science --- Engineering & Applied Sciences --- Computer science. --- Computer communication systems. --- Software engineering. --- Operating systems (Computers). --- Data encryption (Computer science). --- Computers and civilization. --- Computer Science. --- Data Encryption. --- Computer Communication Networks. --- Software Engineering. --- Operating Systems. --- Information Systems Applications (incl. Internet). --- Computers and Society. --- Cryptology. --- Computer operating systems --- Computers --- Disk operating systems --- Systems software --- Computer software engineering --- Engineering --- Informatics --- Science --- Data encoding (Computer science) --- Encryption of data (Computer science) --- Cryptography --- Operating systems --- Application software. --- Civilization and computers --- Civilization --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Distributed processing

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