Man-in-the-Middle Attack and Prevention MeasuresGrabovica, Nikolina (Avtor) Jurišić, Aleksandar (Mentor) Man-in-the-Middle attackkeyprotocolDNS spoofingARP cache poisoningWi-FisecuritySpoofBlockerhash-and-signComputational Diffie-HellmanRSAdigital signaturesignature schemeMan-in-the-Middle (MITM) attacks present a big threat to the online security because adversaries have the ability to intercept, store and use personal information, such as personal identification numbers (e.g. passport numbers), credit card numbers, passwords, etc. We will demonstrate how some messages between two parties of the protocol (devices) can be intercepted using Domain name system (DNS) spoofing and Address Resolution Protocol (ARP) cache poisoning attacks, if the communication is carried out in a certain vulnerable environment. We will introduce preventive measures against different MITM attacks, and propose a new tool called SpoofBlocker to detect and prevent MITM-spoofing-based attacks. We will also study new methods for preventing forgery in signature schemes. Two presented hash-and-sign signatures schemes that are based on RSA and Computational Diffie-Hellman (CDH) constructions imposed the adversary’s forgeries in a certain small set of categories and then used selectively-secure techniques to perform adaptively-secure signature schemes.20232023-08-22 08:55:39Magistrsko delo/naloga148415VisID: 35350COBISS_ID: 163560707sl