Cyber Security Plays an Important Role In the Field of Information Technology. This Paper Mainly Focuses on Challenges Faced By Cyber Security on the Latest Technologies. It Also Focuses on Latest About the Cyber Security Techniques, Ethics and the Trends Changing the Face of Cyber Security. Securing the Information Have Become One of the Biggest Challenges In the Present Day. Whenever We Think About the Cyber Security the First Thing That Comes to Our Mind Is ‘Cyber Crimes’ Which Are Increasing Immensely Day By Day. Various Governments and Companies Are Taking Many Measures In Order to Prevent These Cybercrimes. Besides Various Measures Cyber Security Is Still a Very Big Concern to Many.