The development of IoT has penetrated various sectors. The development of IoT devices continues to increase and is predicted to reach 75 billion by 2025. However, the development of IoT devices is not followed by security developments. Therefore, IoT devices can become gateways for cyber attacks, including brute force and sniffing attacks. Authentication mechanisms can be used to ward off attacks. However, the implementation of authentication mechanisms on IoT devices is challenging. IoT devices are dominated by constraint devices that have limited computing. Thus, conventional authentication mechanisms are not suitable for use. Two-factor authentication using RFID and fingerprint can be a solution in providing an authentication mechanism. Previous studies have proposed a two-factor authentication mechanism using RFID and fingerprint. However, previous research did not pay attention to message exchange security issues and did not provide mutual authentication. This research proposes a secure mutual authentication protocol using two-factor RFID and fingerprint using MQTT protocol. Two processes support the authentication process: the registration process and authentication. The proposed protocol is tested based on biometric security by measuring the false acceptance rate (FAR) and false rejection rate (FRR) on the fingerprint, measuring brute force attacks, and measuring sniffing attacks. The test results obtained the most optimal FAR and FRR at the 80\% threshold. Then the equal error rate (ERR) on FAR and FRR is around 59.5\%. Then, testing brute force and sniffing attacks found that the proposed protocol is resistant to both attacks.

The objective of this paper is to introduce a scheme of comprehensive-factor authentication in edge computing, focusing on a case study of time attendance in smart environments. This authentication scheme deploys all possible factors to maximize security while maintaining usability at a specific smart context. The factors used include three classic elements: something you know, something you have, and something you are, plus an additional location factor. The usability issue involves the ability to reduce time used and to minimize the human actions required throughout the authentication process. The results show that all factors should be authenticated at once in background, and a user can successfully complete the authentication process by performing one or two actions simultaneously. Since user role in a smart environment can be more complicated than roles in other smart offices, role classification at an early stage is highly recommended. The case study reveals that the same setting can require varying levels of security and usability for each user.

Cyber-physical Systems can be defined as a complex networked control system, which normally develop by combining several physical components with the cyber space. Cyber Physical System are already a part of our daily life. As its already being a part of everyone life, CPS also have great potential security threats and can be vulnerable to various cyber-attacks without showing any sign directly to component failure. To protect user security and privacy is a fundamental concern of any kind of system; either it’s a simple web application or supplicated professional system. Digital Multifactor authentication is one of the best ways to make secure authentication. It covers many different areas of a Cyberconnected world, including online payments, communications, access right management, etc. Most of the time, Multifactor authentication is little complex as it requires extra step from users. This paper will discuss the evolution from single authentication to Multi-Factor Authentication (MFA) starting from Single-Factor Authentication (SFA) and through Two-Factor Authentication (2FA). This paper seeks to analyze and evaluate the most prominent authentication techniques based on accuracy, cost, and feasibility of implementation. We also suggest several authentication schemes which incorporate with Multifactor authentication for CPS.

Two-factor authentication (2FA) is commonly used in Internet of Things (IoT) authentication to provide multi-layer protection. Tokens, often known as One-Time Passwords (OTP), are used to offer additional information. While this technique provides flexible verification and an additional layer of security, it still has a number of security issues. This is because it relies on third-party services to produce tokens or OTPs, which leads to serious information leakage issues. Additionally, relying on a third party to provide authentication tokens significantly increases the risk of exposure and attacks, as tokens can be stolen via Man-In-The-Middle (MITM) attacks. In trying to rectify this issue, in this paper, we propose and develop a blockchain-based two-factor authentication method for web-based access to sensor data. The proposed method provides a lightweight and usercentric authentication that makes use of Ethereum blockchain and smart contracts technologies. Then we provided performance and security analysis of our system. Based on the evaluation results, our method has proven to be effective and has the ability to facilitate reliable authentication.

Two-factor authentication (2FA) offers very important security enhancement to traditional username-password authentication, while in many cases incurring undesirable user burdens (e.g., entering a one-time verification code sent to a phone via SMS). Some zero-effort authentication techniques (e.g., Sound-Proof) have been proposed to relieve such burdens without degrading security, but are vulnerable to prediction attacks and co-existence attacks. This paper proposes ABLE, a zeroeffort 2FA approach based on co-location detection leveraging environmental Bluetooth Low Energy (BLE) signal characteristics. In this approach, a laptop on which the user tries to authenticate to a web server, and the user’s smartphone placed nearby which is trusted by the server, both collect and send a record of environmental BLE signal characteristics to the server. The server decides whether the two devices are colocated by evaluating the similarity of the two records, and makes the authentication decision. ABLE is constructed based on the fact that only two devices in close proximity share similar environmental signal characteristics, which distinguishes a legitimate user device from potential adversaries. Due to its location-sensitive nature, combining favorable features brought with the BLE protocol, ABLE is gifted with good resistance to attacks that threaten existing zero-effort authentication schemes. ABLE is not only immune to remote attackers, but also achieves an accuracy over 90\% even against co-present attackers.

The development of IoT has penetrated various sectors. The development of IoT devices continues to increase and is predicted to reach 75 billion by 2025. However, the development of IoT devices is not followed by security developments. Therefore, IoT devices can become gateways for cyber attacks, including brute force and sniffing attacks. Authentication mechanisms can be used to ward off attacks. However, the implementation of authentication mechanisms on IoT devices is challenging. IoT devices are dominated by constraint devices that have limited computing. Thus, conventional authentication mechanisms are not suitable for use. Two-factor authentication using RFID and fingerprint can be a solution in providing an authentication mechanism. Previous studies have proposed a twofactor authentication mechanism using RFID and fingerprint. However, previous research did not pay attention to message exchange security issues and did not provide mutual authentication. This research proposes a secure mutual authentication protocol using two-factor RFID and fingerprint using MQTT protocol. Two processes support the authentication process: the registration process and authentication. The proposed protocol is tested based on biometric security by measuring the false acceptance rate (FAR) and false rejection rate (FRR) on the fingerprint, measuring brute force attacks, and measuring sniffing attacks. The test results obtained the most optimal FAR and FRR at the 80\% threshold. Then the equal error rate (ERR) on FAR and FRR is around 59.5\%. Then, testing brute force and sniffing attacks found that the proposed protocol is resistant to both attacks.

Increasing number of online services have brought great convenience to users, and remote user authentication schemes have been widely used to verify the legitimacy of the authorized users. However, most of the existing authentication schemes are based on password, in which users need to remember the complex passwords and change them frequently. In addition, the great majority of authentication schemes have security defects. Through the analysis of the scheme proposed by Haq et al., we find that it is difficult to resist the key compromise impersonation attack. Therefore, an improved two-factor multiserver authentication scheme without password is proposed. The perfect combination of the user s biological characteristics and the PUF s physical characteristics enhances the practicality and efficiency of the solution. Security analysis of the proposed scheme shows that it can resist various known security attacks.

This work proposes a two-factor authentication method by integrating the second factor into the authentication service in system with a centralized user s database. This approach made it possible to achieve the universality of the process and reduce the authentication time. In this case, the compromise of the first factor becomes inexpedient. Simulation showed that the rest of the authentication parameters meet the requirements defined by international standards for two-factor authentication procedures.

There are three critical aspects of cyber security: authentication, safety, and secrecy. Consumers have access to a wide range of alternatives for improving the safety of passwordbased login systems. With two-factor authentication, the majority of this was done. Two-factor authentication combines singlefactor authentication processes. Two-factor authentication is becoming increasingly common and widely accepted in today’s technological age due to the growing need for privacy and security. Customized security measures are more effective and bought if they are easy to use and implement. For increased website and mobile app security, this study examines the consequences of using a three- factor authentication scheme. This post will present an app we built that might provide a good three-factor authentication approach without losing the convenience.

Privacy Policies and Measurement - With increased reliance of digital storage for personal, financial, medical, and policy information, a greater demand for robust digital authentication and cybersecurity protection measures results. Current security options include alpha-numeric passwords, two factor authentication, and bio-metric options such as fingerprint or facial recognition. However, all of these methods are not without their drawbacks. This projects leverages the fact that the use of physical handwritten signatures is still prevalent in society, and the thoroughly trained process and motions of handwritten signatures is unique for every individual. Thus, a writing stylus that can authenticate its user via inertial signature detection is proposed, which classifies inertial measurement features for user identification. The current prototype consists of two triaxial accelerometers, one mounted at each of the stylus’ terminal ends. Features extracted from how the pen is held, stroke styles, and writing speed can affect the stylus tip accelerations which leads to a unique signature detection and to deter forgery attacks. Novel, manual spatiotemporal features relating to such metrics were proposed and a multi-layer perceptron was utilized for binary classification. Results of a preliminary user study are promising with overall accuracy of 95.7\%, sensitivity of 100\%, and recall rate of 90\%.

Multifactor Authentication - Internet connected Children s toys are a type of IoT devices that the security community should pay particular attention. A cyber-predator may interact with or gather confidential data about children without being physically present if IoT toys are hacked. Authentication to verify user identity is essential for all internetconnected applications, where relying on single authentication is not considered safe, especially in children s applications. Children often use easy-to-guess passwords in smart applications associated with the Internet of Things (IoT) for children s toys. In this paper, we propose to activate multi-factor authentication on the IoTs for children s toys connected to the internet using companion applications. When changing the user s behaviour (by IP address, GPS, OS version, and browser), the child s identity must be verified by two-factor authentication to prevent unauthorized access to preserve the child s safety and privacy. This paper introduces multi-authentication mechanisms: a password and another authentication type, either mobile phone SMS, security token, digital certificate, or biometric authentication.

Multifactor Authentication - Cyber-physical Systems can be defined as a complex networked control system, which normally develop by combining several physical components with the cyber space. Cyber Physical System are already a part of our daily life. As its already being a part of everyone life, CPS also have great potential security threats and can be vulnerable to various cyber-attacks without showing any sign directly to component failure. To protect user security and privacy is a fundamental concern of any kind of system; either it’s a simple web application or supplicated professional system. Digital Multifactor authentication is one of the best ways to make secure authentication. It covers many different areas of a Cyberconnected world, including online payments, communications, access right management, etc. Most of the time, Multifactor authentication is little complex as it requires extra step from users. This paper will discuss the evolution from single authentication to Multi-Factor Authentication (MFA) starting from Single-Factor Authentication (SFA) and through Two-Factor Authentication (2FA). This paper seeks to analyze and evaluate the most prominent authentication techniques based on accuracy, cost, and feasibility of implementation. We also suggest several authentication schemes which incorporate with Multifactor authentication for CPS.

Multifactor Authentication - Authentication is one of the primary problems with system security. The key component of the access control process to prevent unauthorised users from accessing data and resources is authentication, which may be described as the act of verifying a user s identity. The validity of the user cannot be guaranteed by a static technique of authentication. This led to the development of more cutting-edge authentication techniques. To increase the system s security, two factor authentication was initially deployed, followed by multi factor authentication. Later, adaptive authentication was added and it also had some problems. When authenticating a user in this study, an unique collection of user features was taken into account. A performance optimization technique was included since this research takes many user factors into account, and it improved performance by 25\%.

Multifactor Authentication - Authentication is a mandatory factor in network security since decades. Conventional authentication schemes failed to improve system’s security, performance and scalability thus, two-factor, three factor and multifactor authentication schemes are developed. As technology grows, from single server authentication to multiserver authentication schemes and protocols are emerged. Single to multifactor authentication can be used as per the aspect and field of study. Different aspects may use different cryptographic schemes, key agreement to improve security, performance and scalability.

Security and Controls with Data privacy in Internet of Things (IoT) devices is not only a present and future technology that is projected to connect a multitude of devices, but it is also a critical survival factor for IoT to thrive. As the quantity of communications increases, massive amounts of data are expected to be generated, posing a threat to both physical device and data security. In the Internet of Things architecture, small and low-powered devices are widespread. Due to their complexity, traditional encryption methods and algorithms are computationally expensive, requiring numerous rounds to encrypt and decode, squandering the limited energy available on devices. A simpler cryptographic method, on the other hand, may compromise the intended confidentiality and integrity. This study examines two lightweight encryption algorithms for Android devices: AES and RSA. On the other hand, the traditional AES approach generates preset encryption keys that the sender and receiver share. As a result, the key may be obtained quickly. In this paper, we present an improved AES approach for generating dynamic keys.

The increasing number of vehicles registered demands for safe and secure carparks due to increase in vehicle theft. The current Automatic Number Plate Recognition (ANPR) systems is a single authentication system and hence it is not secure. Therefore, this research has developed a double authentication system by combing ANPR with a Quick Response (QR) code system to create ANPR-DAS that improves the security at a carpark. It has yielded an accuracy of up to 93% and prevents car theft at a car park.

Service-oriented architecture (SOA) is a widely adopted architecture that uses web services, which have become increasingly important in the development and integration of applications. Its purpose is to allow information system technologies to interact by exchanging messages between sender and recipient using the simple object access protocol (SOAP), an XML document, or the HTTP protocol. We will attempt to provide an overview and analysis of standards in the field of web service security, specifically SOAP messages, using Kerberos authentication, which is a computer network security protocol that provides users with high security for requests between two or more hosts located in an unreliable location such as the internet.Everything that has to do with Kerberos has to deal with systems that rely on data authentication.

The development of IoT has penetrated various sectors. The development of IoT devices continues to increase and is predicted to reach 75 billion by 2025. However, the development of IoT devices is not followed by security developments. Therefore, IoT devices can become gateways for cyber attacks, including brute force and sniffing attacks. Authentication mechanisms can be used to ward off attacks. However, the implementation of authentication mechanisms on IoT devices is challenging. IoT devices are dominated by constraint devices that have limited computing. Thus, conventional authentication mechanisms are not suitable for use. Two-factor authentication using RFID and fingerprint can be a solution in providing an authentication mechanism. Previous studies have proposed a two-factor authentication mechanism using RFID and fingerprint. However, previous research did not pay attention to message exchange security issues and did not provide mutual authentication. This research proposes a secure mutual authentication protocol using two-factor RFID and fingerprint using MQTT protocol. Two processes support the authentication process: the registration process and authentication. The proposed protocol is tested based on biometric security by measuring the false acceptance rate (FAR) and false rejection rate (FRR) on the fingerprint, measuring brute force attacks, and measuring sniffing attacks. The test results obtained the most optimal FAR and FRR at the 80% threshold. Then the equal error rate (ERR) on FAR and FRR is around 59.5%. Then, testing brute force and sniffing attacks found that the proposed protocol is resistant to both attacks.

Cyber-physical Systems can be defined as a complex networked control system, which normally develop by combining several physical components with the cyber space. Cyber Physical System are already a part of our daily life. As its already being a part of everyone life, CPS also have great potential security threats and can be vulnerable to various cyber-attacks without showing any sign directly to component failure. To protect user security and privacy is a fundamental concern of any kind of system; either it’s a simple web application or supplicated professional system. Digital Multifactor authentication is one of the best ways to make secure authentication. It covers many different areas of a Cyber-connected world, including online payments, communications, access right management, etc. Most of the time, Multifactor authentication is little complex as it requires extra step from users. This paper will discuss the evolution from single authentication to Multi-Factor Authentication (MFA) starting from Single-Factor Authentication (SFA) and through Two-Factor Authentication (2FA). This paper seeks to analyze and evaluate the most prominent authentication techniques based on accuracy, cost, and feasibility of implementation. We also suggest several authentication schemes which incorporate with Multifactor authentication for CPS.