Technological advancements have revolutionized various aspects of human life, facilitating communication, business operations, healthcare, education, and environmental monitoring. However, this increased reliance on technology has also led to a surge in cybercrime, including cyber scams. The "419 scam" or Nigerian scam has been a persistent problem for decades, encompassing frauds like advance fee scams, fake lotteries, and black money scams. Initially prevalent through postal mail and later via fax, the scam has now transitioned to email. This study aims to identify recent types of 419 scam emails, particularly after the covid 19 pandemic, and explore commonly used email subjects. Analysis of the sample 419 scam emails revealed trending scams like lucky winner, threat of exposure, business/partnership proposals, investment, cancer/long-term illness, fund, and compensation scams. Emerging scams included COVID-related, cryptocurrency, marketing contact, and software development scams. Irrespective of the scam type, scammers commonly employed email subjects such as 'Re', 'Good day', 'Greetings', 'Dear friend', 'Confirm', 'Attention', and 'Hello dear'. The severity of cybercrime, especially the 419 scams, cannot be overstated, as it erodes trust, causes financial losses, and hampers Nigeria's reputation and economic progress. Combatting cyber scams and enhancing cybersecurity measures are crucial to protect individuals and organizations from falling victim to these fraudulent schemes.

翻译：技术革新彻底改变了人类生活的方方面面，促进了通信、商业运营、医疗保健、教育及环境监测等领域的发展。然而，对技术的日益依赖也导致网络犯罪（包括网络诈骗）激增。"419骗局"（即尼日利亚骗局）数十年来持续构成危害，涉及预付费诈骗、虚假彩票诈骗及黑钱骗局等欺诈行为。该骗局最初通过邮政信件传播，后经传真扩散，如今已转向电子邮件渠道。本研究旨在识别近期（尤其是新冠疫情后）419诈骗邮件的类型，并探究其常用邮件主题。对样本419诈骗邮件的分析显示，热门骗局包括幸运中奖诈骗、曝光威胁诈骗、商业/合作提案诈骗、投资诈骗、癌症/慢性病诈骗、资金诈骗及补偿诈骗。新兴骗局涉及新冠疫情相关诈骗、加密货币诈骗、营销联系诈骗及软件开发诈骗。无论骗局类型如何，诈骗者普遍采用"Re"、"Good day"、"Greetings"、"Dear friend"、"Confirm"、"Attention"及"Hello dear"等邮件主题。网络犯罪（尤其是419骗局）的严重性不容低估，它不仅侵蚀信任、造成经济损失，更损害了尼日利亚的国家声誉与经济进步。打击网络诈骗、加强网络安全措施，对于保护个人与组织免遭此类欺诈行为侵害至关重要。