Security News > 2023 > March > DNS abuse: Advice for incident responders

What DNS abuse techniques are employed by cyber adversaries and which organizations can help incident responders and security teams detect, mitigate and prevent them? The DNS Abuse Techniques Matrix published by FIRST provides answers.

Among its many special interest groups is the DNS Abuse SIG, which compiled the DNS Abuse Techniques Matrix.

"CERTs are confronted with reported DNS abuse on a continuous basis, and rely heavily on DNS analysis and infrastructure to protect their constituencies," the DNS Abuse SIG notes.

The document defines 21 DNS abuse techniques: DNS spoofing, local recursive resolver hijacking, DNS as a vector for DoS or a channel for command and control communication, malicious registration of second level domains, and others.

"We have organized this information under three spreadsheets covering these incident response actions. For example, during an incident involving DNS cache poisoning, the team can go to the mitigation tab and look at the row for DNS cache poisoning, to find which stakeholders they might be able to contact to help mitigate the incident."

The matrix does not include techniques that attackers may use in conjunction with DNS abuse techniques, nor does it currently cover all existing policy-related, governmental, and judicial avenues incident responders can explore while dealing with DNS abuse.

News URL

https://www.helpnetsecurity.com/2023/03/01/dns-abuse-advice-for-incident-responders/