1. Cappelli, D.M., Moore, A.P., Trzeciak, R.F.: The CERT Guide to Insider Threats: How to Prevent, Detect, and Respond to Information Technology Crimes (Theft, Sabotage, Fraud). Addison-Wesley, Upper Saddle River, New Jersey (2012)
2. Hunker, J., Probst, C.W.: Insiders and insider threats-an overview of definitions and mitigation techniques. J. Wirel. Mob. Netw. Ubiquitous Comput. Dependable Appl. 2(1), 4–27 (2011)
3. Legg, P.A., et al.: Towards a conceptual model and reasoning structure for insider threat detection. J. Wirel. Mob. Netw. Ubiquitous Comput. Dependable Appl.cations 4(4), 20–37 (2013)
4. Ponemon Institute: Privileged user abuse & the insider threat. http://www.trustedcs.com/resources/whitepapers/Ponemon-RaytheonPrivilegedUserAbuseResearchReport.pdf (2014). Accessed 06 Jan 2015
5. Jiang, J., et al.: Prediction and detection of malicious insiders’ motivation based on sentiment profile on webpages and emails. In: IEEE Military Communications Conference, pp. 1–6. IEEE, Los Angeles, CA, USA (2018)