Since March 2012, I work as a digital forensics examiner, I examine cases such as copyright infringements, data breaches, hacking (defacing, malware to steal bitcoins, cryptomalware, malware to steal sensitive data e.g. bank passwords), tax evasion, money laundering, web fraud and financial fraud. I have used commercial software including FTK, X-Ways, Nuix workstation, Magnet Axiom, Oxygen, UFED Physical Analyzer.
Moreover, I develop my own tools when there is a need. In addition, I have gained extensive experience with recovering RAID storage devices without having prior information about the configuration parameters. The file systems of DVR recorders is also another area that I worked. Regarding log analysis, I am able to work efficiently with large data sets consisting of millions of records. Finally, because of the numerous tax evasion cases I worked over the years, I have gained deep knowledge of Microsoft SQL storage internals.
Concerning my education, I studied Electrical and Computer Engineering at Democritus University of Thrace, Greece. My master thesis examined statistical properties of popular internet applications. I also carried out stressing tests in network interface cards and saturated links to find out distinct patterns using Fourier techniques.
Regarding programming, I have developed tools for parsing documented and undocumented data structures from raw sources, for instance, accessing directly the hard disk data. When there is a need, I use python to automate tedious tasks. Concerning, electronic fraud cases, I implemented scripts to gather open source data to help the investigators locate the offending records, for example analyzing and visualizing email headers.
Concerning web and Gui development, I use Flask (a python framework) as backend, and for the latter PyQT and GTK3+. In addition, I have developed software for xml transformation and pdf reports generation using xsl. Regarding backend storage, I used MySQL, MSSQL and Redis. I have worked in collaborative and individual software projects using git as a source code versioning system. I try to accommodate best practices in projects implementation such as writing idiomatic code, unit testing, DRY principle, continuous integration and deployment. Concerning cloud services, I am familiar with Google cloud platform where this site is actually hosted.