Obsidian: A scalable and efficient framework for NetFlow obfuscation

This extended abstract briefly introduces Obsidian, a scalable and efficient Python implementation of the extended version of the (k, j)-obfuscation technique. Obsidian improves the previous version by supporting the incremental obfuscation of network flows. This extension enables the obfuscation of larger datasets of network flows as required by networking research. As such it has been evaluated with billions of flows generated by the border router of a commercial Autonomous System (AS).