Cyber forensics is the process of identifying, collecting, preserving, examining, and analysing digital evidence from computers, networks, mobile devices, servers, and other electronic systems. In the context of e-commerce, cyber forensics is particularly important because online businesses handle sensitive information such as customer details, passwords, payment information, transaction records, and business data. It helps investigate cybercrimes such as hacking, phishing, identity theft, credit-card fraud, malware attacks, data breaches, and unauthorised access. Cyber forensic experts examine digital records such as system logs, emails, browser history, transaction records, IP addresses, deleted files, and network traffic to determine what happened, how an attack occurred, and who may have been responsible. The evidence must be collected and preserved carefully so that its integrity is maintained and it can be used in legal proceedings. Network transaction security refers to protecting information exchanged between customers, e-commerce websites, payment gateways, banks, and other parties from interception, modification, theft, or unauthorised access. Several methods are used to secure network transactions. Encryption is one of the most important methods. It converts readable