The emerging wireless communication technology known as vehicle ad hoc
networks (VANETs) has the potential to both lower the risk of auto accidents
caused by drivers and offer a wide range of entertainment amenities. The
messages broadcast by a vehicle may be impacted by security threats due to the
open-access nature of VANETs. Because of this, VANET is susceptible to security
and privacy problems. In order to go beyond the obstacle, we investigate and
review some existing researches to secure communication in VANET. Additionally,
we provide overview, components in VANET in details