Paper/Speech Details of Conference Program for the 25th NISPAcee Annual Conference Program Overview II. e-Government Author(s) Tamas Szadeczky Budapest University of Technology and Economics Budapest Hungary Som Zoltán, Zoltán Polgár, National University of Public Service, Budapest, Hungary Title Communication Security of e-Government Services File Paper files are available only for conference participants, please login first. Presenter Tamas Szadeczky Abstract The government is the largest data processor of a country. Their data processing activities are authorized by the law and hopefully done according the data protection regulation. It is typically the responsibility of the local data protection authority to overview this process. Although they are in charge of the legal issues, they hardly ever deal with the best practices of the information security. The paper is about a comparative research of the communication security of e-Government services in Germany and Hungary. The focus point of the research is to analyze the cryptographic security algorithms and protocols which encrypt the communication in the relations of the citizen and a governmental body. This includes the general e-Government portals, central authorities and specialized services, like taxation and criminal record extracts. The actuality of the topic lies on the fact that the security of the citizen’s personal data, used, stored and transferred by the governmental bodies can be in danger. Two examples are the loss of 25 million UK citizen’s personal data in 2007 because of a failure of the UK Customs Service and the compromise of 191 million US citizen’s personal data, stored in the Voter Database in 2015. The goal of the research is to provide the best practice, usable for governmental communication, based on international standards and current practices.