Computer Forensics was created to help various kinds of police investigations to quickly and reliably collect digital data from the suspect's electronic media (PCs, mobile phones, printers, etc.) and their presentation to the court.
The Open Computer Forensics Architecture is a program created by the Dutch police to speed up police investigation, automate the process of collecting digital data and enable police investigators to have continuous access in the facts of the case that have been found up to that time.
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 the Open Computer Forensics Architecture to the suspect's computer, it can be easily found and recovery ψηφιακών δεδομένων τα οποία μπορούν να παρουσιαστούν στο δικαστήριο σαν αποδεικτικά data.
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 messaging system with centre 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 the appropriate OCFA segments .For the distribution of 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 OCFA tool is the OCFA Data Store Module. This tool processes the data and meta data and stores the useful information in a database. OCFA can be downloaded by anyone who wants it from the page 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
