How Azure customers can prevent subdomain takeover

The video tutorial discusses the risks and processes of subdomain takeovers, particularly focusing on CNAME records in DNS settings. It explains how attackers can exploit these vulnerabilities, especially when resources are deprovisioned but DNS records are left behind. The tutorial provides steps to identify and remove such vulnerabilities, highlights case studies like Microsoft's experience, and emphasizes the importance of understanding DNS and training developers to prevent these issues.

What is a common vulnerability that attackers exploit in DNS settings?

• Leftover CNAME records

• Open ports

• Expired SSL certificates

• Unused IP addresses

What is the first step in the process of a subdomain takeover?

• Updating the SSL certificate

• Assigning a new IP address

• Provisioning a cloud resource with a domain name

• Deleting the DNS zone

Which tool is mentioned as being discontinued for checking subdomain vulnerabilities?

• Sub Lister

• Sub Over

• Get Dangling DNS Records

• OWA amass

Why is it important to train developers in DNS concepts?

• To enhance user interface design

• To prevent subdomain takeovers

• To improve website speed

• To reduce server costs

What should organizations do after decommissioning a website?

• Redirect traffic to a new site

• Ensure all related DNS records are removed

• Increase the TTL value

• Leave the DNS settings unchanged