Vehicle Ad-hoc Networks (VANETs), which share traffic-related information between cars and infrastructure and aid to enhance driver safety and road safety, are capable of and viable for implementing Intelligent Transportation Systems (ITS). efficient traffic flow. Nonetheless, the confidentiality and privacy of such information is crucial for VANET due to the open wireless access channel. Attackers can compromise VANET security by capturing, intercepting, altering, replaying, or deleting traffic-related information. Thus, the hottest study field right now is assuring the security and privacy of traffic-related information in VANETs. Vehicle communication has been the subject of extensive effort in this situation. Yet, in terms of security needs, security assaults, and performance effectiveness, these duties fall short of adequately addressing security challenges.This white paper organises various authentication and privacy systems into categories and analyses their workings, advantages and disadvantages, security needs, threats, and performance metrics. Lastly, we chose the research inquiries that would be posted in the VANET security area.