In recent years, the term "deepfake" has become increasingly popular in the tech world, with cybersecurity experts warning of its growing threat. Deepfakes are realistic images, audio or video content created with the help of machine learning and artificial intelligence techniques that manipulate or replace existing content to create convincing but false media. Deepfake technology can be used for a wide range of purposes, from harmless pranks to malicious activities such as fraud, blackmail, propaganda, or cyberbullying. In this article, we will explore the concept of deepfake, why and how it poses a threat to people, and the pros and cons of deepfake in terms of cybersecurity. Deepfake is a portmanteau of the words "deep learning" and "fake." It is a type of synthetic media that is created using deep learning algorithms, specifically generative adversarial networks (GANs), which learn to generate new data that is similar to existing data.