Increasing the popularity of SIP based services (VoIP, IPTV, IMS infrastructure) lead to concerns about its ‎security. The main signaling protocol of next generation networks and VoIP systems is Session Initiation Protocol ‎‎(SIP). Inherent vulnerabilities of SIP, misconfiguration of its related components and also its implementation ‎deficiencies cause some security concerns in SIP based infra...

In this paper, we present results from an online survey with 1,510 participants and an interview study with 31 participants on (secure) mobile instant messaging. Our goal was to uncover how much of a role security and privacy played in people’s decisions to use a mobile instant messenger. In the interview study, we recruited a balanced sample of ITsecurity experts and non-experts, as well as an...

We consider a model for network platform competition between the current “Best Effort” (BE) network and a hypothetical “Next Generation Network” (NGN). We suppose there are indirect network externalities between content providers (CPs) and users of each platform. Moreover, we suppose that NGN users can access BE content, thus there is a cross-platform, indirect network externality. This feature...

Mobile phones are already approaching penetration rates of close to 80 per cent in some parts of the world. Mobile payments, or “m-payments”, are expected to become an important part of retail payments. M-payments are defined as payments that are carried out via mobile phone. M-commerce as a wide area could be divided into mobile E-commerce and M-trade area. Different models of mobile payments ...

The requirement to monitor the chemical quality of water has become one of the major issues in environmental analytics. Ionmobility spectrometry (IMS), a fast, sensitive method traditionally used in security and military applications, is also suitable for environmental analysis and detection of organic pollutants from aqueous matrices, when combined with advantageous methods to isolate analytes...

background and objectives: the significant rise in food borne infections is mainly caused by campylobacter spp., salmonella serovars and verotoxigenic escherichia coli . as the emerging food borne pathogens cause disease, more studies have been conducted for rapid detection of these pathogens. the combination of immunomagnetic separation and polymerase chain reaction (ims-pcr) is the most accur...

As the multimedia services are gaining popularity, the operators are seeking new architectures, such as IP Multimedia Subsystem (IMS), that would allow provision of these services with sufficient level of quality and security. In the future, however, it is not anymore so clear who is an operator, because the ubiquitous communication visions enables every player to interact in multitude of ways ...