The national character of donkeys

Title: Caracterul naţional al măgarilor (The national character of donkeys) Originally published: Din Ţara Măgarilor. Însemnări, Bucharest, Agenţia I. Brănişteanu, 1916 Language: Romanian. The excerpts used are from Cristian Preda, ed., Din Ţara Măgarilor. Însemnări, (Bucharest: Nemira, 1998), pp. 46–51. About the author Ştefan M. Zeletin (born Ştefan Motaş) [1882, Burdusaci (Bacău county) – 1934, Bucharest]: economist and political theorist. His family belonged to the local freepeasantry. He..

Flow Level Data Mining of DNS Query Streams for Email Worm Detection

Abstract. Email worms remain a major network security concern, as they increasingly attack systems with intensity using more advanced social engineering tricks. Their extremely high prevalence clearly indicates that current network defence mechanisms are intrinsically incapable of mitigating email worms, and thereby reducing unwanted email traffic traversing the Internet. In this paper we study the effect email worms have on the flow-level characteristics of DNS query streams a user machine generates. We propose a method based on unsupervised learning and time series analysis to early detect email worms on the local name server, which is located topologically near the infected machine. We evaluate our method against an email worm DNS query stream dataset that consists of 68 email worm instances and show that it exhibits remarkable accuracy in detecting various email worm instances 1

From the Earth to the Sky and Back

Data communication is a key issue in the planned European space mission. A description is given of the interconnection approach for end-to-end communication, concentrating on the models and protocols to be adopted for integrating networks with heterogeneous technologies and applications with diverse characteristics. A review is presented of the mission environment, and approaches for providing end-to-end communication between application processes residing in systems located in the sky and on the ground that are based on the OSI RM (open systems interconnection reference model) protocols and telemetry/telecommand protocols are described. A number of possible approaches dealing with end-to-end communication when the physical connectivity between the sky and the ground is missing as a result of system topology are outlined