4. Several major computer security breaches incidents in major businesses are reported every year. Identify such an IT security incidents and discuss them in more detail such as the nature of the incident, who was affected by it, its impact, its damages and costs, what was done to avoid such incidents in the future. 5. Internet browsers are the main gateway to accessing and using the Internet. Yet, if browsers are not used carefully, they become a major source of security threats to users. Research/review the five most common browser security threats, and how to handle or secure those threats. From your research, which Internet browser is the most secure. 6. Write the references you used in your responses.