Computer science Forensics was created with the aim of assisting various types of police investigations for fast and reliable collection of digital data from electronic media (Electronic Computers, mobile phones, printers, etc.) 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 systemchangeς μηνυμάτων με κέντρο το OCFA Anycast Relay το οποίο είναι υπεύθυνο για την προσωρινή αποθήκευση μηνυμάτων και αποθήκευση μηνυμάτων που δεν έχουν παραδοθεί και για την εξισορρόπηση loady between segments of the same type within the OCFA. At the second level the OCFA XML Router distributes the evidence to the appropriate segments of the OCFA. To distribute the data the XML Router sees where the meta data was recorded by the previous segments.
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
