Katharina Kohls David Rupprecht Thorsten Holz Christina Pöpper Lost traffic encryption: fingerprinting LTE/4G traffic on layer two. 249-260 2019 WiSec https://doi.org/10.1145/3317549.3323416 https://www.wikidata.org/entity/Q130841469 conf/wisec/2019 db/conf/wisec/wisec2019.html#KohlsRHP19