Despite the claimed benefits of e-voting initiatives, wider adoption of e-voting mechanisms and implementation processes is slower than expected. Several technical, social, and cultural challenges hinder generability and applicability of e-voting. Amongst them, the evaluation and harmonization of e-voting systems, given different legal and statutory frameworks, is still an important challenge to overcome. Yet, only a few works have addressed this topic in the field. This article aims to contribute to further understanding this unexplored topic by applying a practical evaluation framework to Helios Voting, one of the most widely used e-voting tools to date. Our framework, strongly based on the technical and security requirements issued by the Council of Europe in 2017, is a valuable source of information for election officials, researchers and voters to understand the strengths and weaknesses of Helios Voting and, as a result, to improve decision-making processes regarding the type and size of elections that can be securely handled by Helios Voting. The ultimate goal of our paper is to conceptually and practically support the gradual, secure and protocolized expansion of e-voting.

The ever-increasing number of smart devices connected to the internet poses an unprecedented security challenge. This article presents the implementation of an Intrusion Detection System (IDS) based on the deployment of different one-class classifiers to prevent attacks over the Internet of Things (IoT) protocol Message Queuing Telemetry Transport (MQTT). The utilization of real data sets has allowed us to train the one-class algorithms, showing a remarkable performance in detecting attacks.

The implantation of Remote Electronic Voting (REV) systems to Electoral Processes is happening at a slower pace than anticipated. One of the relevant factors explaining that reality is the lack of studies about the Cryptographic Schemes and Primitives applied to the existing REV solutions. In this paper, the authors review the main cryptographic schemes applied to date, as well as the most relevant Post Quantum research in the field. The aim is twofold: contribute to clarify the strengths and weaknesses of each scheme as well as expose the remaining challenges, as a necessary step towards a broader introduction of REV solutions in binding elections.

Intentional jamming and spoofing are growing concerns for communication and positioning systems based on Global Navigation Satellite System (GNSS). In the maritime sector, intentional interfering signals might induce poor performance of the GNSS receivers, that, in severe cases, are unable to provide reliable measurements. On board of vessels, the failure of the GNSS receiver propagates to multiple systems, like the Automatic Information System (AIS) transponder, the ship's gyro calibration system and the digital selective calling system. The AIS itself can suffer from failures due to interference in the VHF band, and the lack of bandwidth makes it difficult to introduce security any security mechanisms. The vulnerability to intentional interference as well as the availability of personal privacy devices easily sold over the Internet motivate attackers who intend to fraud services and get direct benefits.

E-voting implantation is happening at a slower pace than anticipated. A plethora of technical and social challenges hinder a deeper implementation. In this article, the problem is addressed by applying a practical evaluation framework to two of the most relevant e-voting tools: Helios Voting and iVote from Scytl. The framework is strongly based on the technical requirements issued by the Council of Europe in 2017. The authors believe it can constitute a useful source of information for election officials, researchers and even voters. The final purpose is contributing to a gradual, secure and protocolized expansion of e-voting in Europe; more so in the present times, with mounting geo-political challenges and tensions.