This essay examines the significant impact of COVID-19 on consumer behavior, particularly focusing on the rise of online fraud and changing purchasing patterns. The essay begins with an introduction to consumer behavior and its importance to businesses, and then identifies the core issue: increased criminal activities on social networks during the pandemic. It explores the rules governing consumer behavior, including the role of trademarks and consumer rights, while also analyzing various consumer behavior theories. The essay discusses the application of these concepts to the current situation, highlighting the increase in cybercrimes due to increased online activity. It also examines the actions consumers can take to protect themselves, such as verifying trademarks and collecting evidence before purchasing. The essay includes relevant data and concludes with a discussion of potential solutions and the importance of consumer awareness in the face of online fraud and changing market dynamics.