Computer science Forensics δημιουργήθηκε με σκοπό να βοηθήσει διαφόρων ειδών έρευνες της αστυνομίας για γρήγορη και αξιόπιστη συλλογή ψηφιακών δεδομένων από τα ηλεκτρονικά μέσα (Ηλεκτρονικούς Υπολογιστές, κινητά τηλέφωνα, printers etc. a) of the suspect and their presentation in court.
The Open Computer Forensics Architecture is a program created by the Dutch police to accelerate police research, automate the collection of digital data and enable police researchers to have ongoing access to the data of the case that has been found so far.
Open Computer Forensics Architecture has been developed on Linux and requires good knowledge of SQL language and knowledge of Computer Forensics in general.
By connecting Open Computer Forensics Architecture to the suspect's computer, it's easy to find and retrieve digital data that can be presented to court as evidence.
With OCFA's specialized use, data can be obtained that show information about a document or information that the suspect has attempted to delete. This data is called Meta Data.
Communication between the departments within the OCFA is determined by a communication system consisting of two levels.
At the first level there is the counter systemchangeof messages centered on the OCFA Anycast Relay which is responsible for message caching and undelivered message storage and for load balancing between same-type segments within OCFA. At the second level the OCFA XML Router distributes the evidence to appropriate sections of the OCFA. To distribute the data the XML Router sees where the meta data was recorded from the previous sections.
Although OCFA is simple to use, its capabilities are highlighted in its specialized use and architecture.
The last tool of OCFA is the OCFA Data Store Module. This tool processes the elements (data and meta data) and stores the useful information in a database. OCFA can be downloaded by anyone who wishes from the σελίδα http://ocfa.sourceforge.net/ if it is free of charge.
Sources: http://ocfa.sourceforge.net/index-old.html http://www.forensicswiki.org/wiki/Open_Computer_Forensics_Architecture
From Danish Giannis and Gerasimos Kounadi @Wikibooks
