DNS Changes

The Security Challenge

Cybercriminals change DNS records to hijack domains and redirect traffic to malicious websites

The Internet and the Domain Name System (DNS) are continually changing; domains are constantly created and existing ones are frequently modified. Cybercriminals change DNS records to hijack domains and redirect traffic to malicious websites.

The redirected traffic bypasses their hosts leaving organizations unaware that traffic is being diverted. This leaves businesses and customers at great risk.

The Farsight Solution

DNS Changes channel

provides real-time visibility into changes made to DNS.

“Farsight’s DNS Changes is the authoritative source of changes in Internet infrastructure.”

Chief Scientist
Security Company

Whenever a new domain is created or a domain’s configuration changes, the DNS Changes channel highlights that change in real-time. This lets organizations easily monitor their DNS worldwide and alert on unauthorized changes due to operational accidents — or an attack.

The data is collected from the Farsight global DNS sensor array. The DNS Changes channel contains more than 200,000 observations per second to provide a holistic view of all DNS changes including:

Hostnames - also known as fully qualified domain names (FQDNs)
Name servers
DNSSEC records

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How Does It Work?

DNS Changes Identifies Domain Hijacking

A resource record (RR) is a single DNS record.
A resource record set (RRset) consists of all the resource records of a given type for a given rrname.

When the DNS Changes channel detects a never-before-seen RRset, it publishes that RRset to Channel 214 on SIE. It also annotates novel information about each RRset. These include individual RRs that have not been seen before and whether the RRset has changed from those previously seen for a Fully Qualified Domain Name (FQDN).

Data is presented as a time-stamped RRset, providing full context for observed changes as well as critical information for security investigators and operational change management.