title: Risk analysis of information security in a mobile instant messaging and presence system for healthcare.
abstract: BACKGROUND
  Instant messaging (IM) is suited for immediate communication because messages are delivered almost in real time. Results from studies of IM use in enterprise work settings make us believe that IM based services may prove useful also within the healthcare sector. However, today's public instant messaging services do not have the level of information security required for adoption of IM in healthcare. We proposed MedIMob, our own architecture for a secure enterprise IM service for use in healthcare. MedIMob supports IM clients on mobile devices in addition to desktop based clients.
  
  
  METHODS
  Security threats were identified in a risk analysis of the MedIMob architecture. The risk analysis process consists of context identification, threat identification, analysis of consequences and likelihood, risk evaluation, and proposals for risk treatment.
  
  
  RESULTS
  The risk analysis revealed a number of potential threats to the information security of a service like this. Many of the identified threats are general when dealing with mobile devices and sensitive data; others are threats which are more specific to our service and architecture. Individual threats identified in the risks analysis are discussed and possible counter measures presented.
  
  
  CONCLUSIONS
  The risk analysis showed that most of the proposed risk treatment measures must be implemented to obtain an acceptable risk level; among others blocking much of the additional functionality of the smartphone. To conclude on the usefulness of this IM service, it will be evaluated in a trial study of the human-computer interaction. Further work also includes an improved design of the proposed MedIMob architecture.
authors.affiliation: Norwegian Centre for Telemedicine, University Hospital of North Norway, P.O. Box 35, NO-9038 Tromsø, Norway.
authors.forename: Erlend
authors.initials: E
authors.lastname: Bønes
authors.forename: Per
authors.initials: P
authors.lastname: Hasvold
authors.forename: Eva
authors.initials: E
authors.lastname: Henriksen
authors.forename: Thomas
authors.initials: T
authors.lastname: Strandenaes
mesh_terms: D016494:Computer Security; D003695:Delivery of Health Care; D034742:Electronic Mail; D006751:Hospital Information Systems; D008490:Medical Informatics; D009664:Norway; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D017216:Telemedicine