Blockchain-based decentralized identifier in metaverse environment for secure and privacy-preserving authentication with improved key management and cryptosystem

The majority of economic, financial, artistic, social, and governmental activities in the current digital era from private correspondence to extensive organisational operations are intricately linked to cyberspace. But this increasing reliance on digital technology has also resulted in a startling rise in cyberattacks that target both government and private organisations globally. Cyber threats can have serious financial, political, and even military repercussions by taking advantage of the weaknesses in wireless and networked technologies. Computer viruses, data breaches, denial-of-service (DoS) assaults, and other malevolent incursions intended to interfere with vital processes are common attack vectors. Organisations are using a variety of cybersecurity solutions that depend on real-time monitoring and dynamic threat intelligence to reduce such risks. Protecting sensitive data from sophisticated attackers is still a global concern, despite ongoing research efforts. The goal of this paper is to present a thorough analysis of current developments in cybersecurity, emphasising the advantages, disadvantages, and difficulties of various suggested defences. It also looks at how standard security frameworks have changed over time, how next-generation attack patterns have emerged, and how current trends are influencing cyber defence moving forward. The review's conclusions are meant to help practitioners and researchers create cybersecurity techniques that are more adaptable and robust.