CIS Critical Security Control 9: Email and Web Browser Protections

Email and web browsing are essential components of modern business communication, but they can also pose significant security risks. Cybercriminals can use these channels to deliver malware, phishing attacks, and other cyber threats that can compromise sensitive data and compromise network security. CIS Critical Security Control 9 provides guidelines to help organizations mitigate these risks and secure their email and web browsing environments.

The control is designed to safeguard against email and web-based threats by recommending a range of security strategies. These strategies include:

1. Email Filtering: One of the key recommendations of the control is the implementation of email filtering to protect against malicious content, spam, and phishing attacks. The filtering solution should use advanced analytics to identify and block email messages that are suspicious or contain known threats.

2. Web Content Filtering: Similar to email filtering, web content filtering can be used to restrict access to certain websites and prevent users from accessing malicious content or websites. Web content filtering can be implemented at the network level or at the endpoint level using web browser plug-ins.

3. Secure Email and Web Browsing Protocols: The control recommends using secure email and web browsing protocols to reduce the risk of data leaks or unauthorized access. Examples of secure protocols include HTTPS for web browsing and S/MIME for email.

4. User Education and Awareness: The control highlights the importance of user education and awareness in preventing risky behaviors such as clicking on suspicious links or downloading unauthorized software. User training can include simulated phishing attacks and other exercises to help employees recognize and avoid potential cyber threats.

5. Email and Web Usage Policies: Finally, the control recommends implementing email and web usage policies to regulate employee usage and enforce security protocols. These policies should outline acceptable use of email and web browsing and provide guidelines for reporting suspected security incidents.

By following the recommendations outlined in CIS Critical Security Control 9, organizations can reduce the risk of email and web-based threats and protect their networks and sensitive data. These strategies can help to create a culture of security awareness and empower employees to take an active role in maintaining a secure work environment.