Blog | KOR Labs

Bulletin: DNS Abuse Campaign Exploiting “Subdomain Cloaking”

NetBeacon Phishing November 27, 2025

8 min read

Bulletin: DNS Abuse Campaign Exploiting "Subdomain Cloaking"

As a follow up to our recent blog on the concentration of malicious phishing, we are publishing this blog to raise awareness of a recently observed (and ongoing) campaign which involves a specific type of malicious registration.

Encryption Research August 25, 2025

5 min read

Discovering the Discovery of Designated Resolvers

DNS encryption is gaining momentum with proposed standards such as DoT, DoH, and DoQ protecting DNS exchanges from external observers. In this blog, we look at the Discovery of Designated Resolvers (DDR) - a mechanism that allows clients to obtain encryption configurations of recursive resolvers.

INFERMAL Project: Analyzing Features of Malicious Domain Registrations

ICANN Research October 24, 2024

3 min read

INFERMAL Project: Analyzing Features of Malicious Domain Registrations

INFERMAL Project, funded by ICANN and conducted by KOR Labs, is dedicated to understanding the selection patterns behind cybercriminals' preferences for specific domain name registrars and top-level domains (TLDs) in their phishing operations.

Building a Resilient Domain Whitelist to Enhance Phishing Blocklist Accuracy

Blocklists Research September 08, 2024

6 min read

Building a Resilient Domain Whitelist to Enhance Phishing Blocklist Accuracy

Community-driven and automated methods for constructing phishing blocklists may occasionally result in false positives, erroneously flagging benign domains or URLs as malicious. This blog discusses how we address this problem.

The D(M)ARC Side of the Email Reporting System

Email Research August 15, 2024

5 min read

The D(M)ARC Side of the Email Reporting System

This blog post presents a large-scale study of DMARC to observe the user habits and preferences, consider the evolution of DMARC adoption in time, and understand how popular domains use DMARC.

NetBeacon Phishing July 30, 2024

5 min read

Phishing Attack Trends

Since collecting and publishing data on the number of unique domains used for phishing attacks and malware distribution as part of our NetBeacon MAP reporting, we've been on the lookout for any discernible patterns or trends. This blog post discusses one of those.

DNSAI February 29, 2024

2 min read

Measuring DNS Abuse is Difficult

This blog is a condensed overview from our full report titled "Why do different DNS Abuse measurement projects result in different numbers" and is meant to create a greater awareness of how DNS Abuse is measured.