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Automatically Detecting DNS Hijacking in Passive DNS

Unit 42's machine learning pipeline detected 6,729 DNS hijacking events between March and September 2024, hitting political parties, ISPs, and universities.

Unit 42 processes roughly 167 million new DNS records daily and applies a machine learning model using 74 features over 169 TB of passive DNS and geolocation data to flag hijacked domains. From March to September 2024 the pipeline screened over 29 billion records and classified 6,729 as DNS hijacking, averaging 38 detections per day; a new model detects hijacks in customer traffic within about 10 minutes. Notable cases include a Hungarian political party's hijacked domain, defacement of a large utility company and ISP, and university and research center domains repurposed for illicit gambling. DNS hijacking typically relies on stolen registrar or DNS provider credentials or cache poisoning, enabling MitM attacks, phishing, drive-by downloads, and scams.

Palo Alto Unit 42 · 29d agoResearch in the wild

Trends in Web Threats: Old Web Skimmer Still Active Today

Unit 42 detected 577,000 landing URL incidents in Q1 2022, with an old web skimmer family still actively stealing payment card data.

Palo Alto Unit 42 detected 577,275 landing URL incidents (116,643 unique) and 2,043,862 malicious host URL incidents (180,370 unique) between January and March 2022. Web threat volumes declined after the November 2021 holiday peak, but an old web skimmer family remained active. Business and economy sites overtook personal sites as the most common apparently benign entry points. Most malicious domains geolocated to the United States, Germany, and Russia, though proxy servers and VPNs obscure true locations.

Palo Alto Unit 42 · 29d agoResearch

Phishing Powers 80% of Attacks on US Companies: How SOCs Can Detect It Early

Phishing drives 80% of attacks on US companies; FBI recorded 158,436 BEC victims and over $20B in losses from 2013-2023.

A vendor-authored analysis claims phishing powers roughly 80% of attacks on US companies, citing FBI statistics of 158,436 business email compromise victims and more than $20 billion in reported losses between 2013 and 2023. It describes modern phishing using compromised infrastructure, redirect chains, dynamic pages, and adversary-in-the-middle techniques, including a recent campaign targeting tens of thousands of primarily US users. The piece promotes ANY.RUN Threat Intelligence Feeds and TI Reports, claiming 99% unique high-confidence IOCs, 21-minute faster MTTR, and 30% fewer Tier 2 escalations.

Cyber Security News · 7d agoPhishing & fraud