Dynamic DNS emerges as go-to cyberattack facilitator

While dynamic DNS services have been around for many years, they’ve recently emerged as an integral tool in the arsenals of cybercriminal groups like Scattered Spider.

Dynamic DNS (DDNS) services automatically update a domain name’s DNS records in real-time when the Internet service provider changes the IP address. Real-time updating for DNS records wasn’t needed in the early days of the Internet when static IP addresses were the norm.

However, the massive growth of domains, IP addresses, and Internet-connected devices and resources over the last decade-plus has led organizations to use Dynamic Host Configuration Protocol (DHCP) to assign IP addresses dynamically. Instead of manually updating the DNS records every time, say, a file server or Internet of Things device is assigned a new IP address, DDNS providers automatically update the records on behalf of those organizations.

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