DNS logs are records generated by Domain Name System (DNS) servers that document every request made to translate domain names (like www.example.com) into IP addresses. These logs capture details such as the time of the request, the domain name queried, the source IP address, and the response from the DNS server. DNS logs are vital for cybersecurity because they help organizations monitor which websites or online resources are being accessed from within their network. By analyzing DNS logs, security teams can detect unusual or unauthorized activity, identify potential malware communications, and investigate security incidents more effectively.