Threat Intelligence Researches. From Our Analysts.
Threat intelligence research from Brandefense: threat actors, malware, vulnerabilities and campaigns, with analysis you can use to prioritize defenses.
Malware Analysis Reports Technical Analysis of Stealc Malware Technical analysis of the Stealc stealer: how it infects systems, what it steals, detections, IoCs and mitigation tactics for security teams. 
APT Groups [Research Summary]: APT34’s New Backdoor – SideTwist Variant APT34 (OilRig) has a new SideTwist variant. See how the 2023 samples differ from the 2021 backdoor, how phishing delivers them and how to defend. 
Malware Analysis Reports Insurance Sector Targeted Malware Analysis Report on insurance sector malware: technical details, detections and IoCs from the analysis of a sample aimed at employees of insurers in Turkey. 
Malware Analysis Reports DarkSide Ransomware Technical Analysis Open Report Technical analysis of DarkSide ransomware: how the RaaS group operates, its double extortion model, how it infects systems, plus detections and IoCs. 
Malware Analysis Reports HermeticWiper Malware Technical Analysis Open Report Analysis of HermeticWiper destructive malware — wiper functionality, MBR corruption technique, deployment method chain, and forensic indicators from 
Malware Analysis Reports PetitPotam Vulnerability Analysis Open Report Learn what the PetitPotam vulnerability is, how the NTLM relay attack works, how CVE-2021-36942 is rated and how to mitigate it on AD CS systems. 
APT Groups [Research Summary]: SandWorm APT Group Intelligence Report Sandworm Team, also known as Unit 74455, is a Russian cyber espionage group that has been operating since 2009. They mainly target Ukrainian organizations. 
APT Groups European Focused Threat Actors – Who Actively Continue Their Strategies The main motivation of individual threat actors who carry out European-focused attacks is to earn financial gain. 
APT Groups European Focused Threat Actors – APT Groups It has been observed that the main motivation of individual threat actors who carry out European-focused attacks is to earn financial gain. 
APT Groups European Focused Threat Actors – Ransomware Groups Threat actors, some ransomware groups, that governments support usually organize longer-term operations in the interests of the state they are affiliated with. 
APT Groups Equation APT Group Equation Group profile: operations since 2001, zero-day exploits, hard drive firmware persistence, self-destructing malware and links to Stuxnet and Flame. 
APT Groups APT Groups Actively Involved During the Russia-Ukraine Cyber War Which APT groups took part in the Russia-Ukraine cyber war? See the groups named, what they hit in Ukraine, and why firewalls and antivirus fall short. All 14 pages
About The Blog.
Last updated June 9, 2026-
Articles on ransomware, APT groups, the dark web, digital risk protection, fraud, sector analysis and VIP security, written for security teams.
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New articles are added several times a month. The newest come first, and every article shows its publish date.
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Use the topic chips above the list to open one topic, or type a word in the search box. Each topic has its own page.
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Articles draw on public sources such as CISA advisories, MITRE ATT&CK and ENISA reports. Sources are listed at the end of an article when it cites them.
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The site feed at brandefense.io/feed/ lists new posts. The email sign-up box is on the All Resources and Reports pages.
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Brandefense is an AI-driven threat intelligence company. Its platform covers cyber threat intelligence, digital risk protection and external attack surface management. You can request a demo on your own domain from the Request A Demo page.
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The blog page shows 470 articles. You can open all of them or pick one topic, such as APT Groups, Dark Web, Ransomware or Fraud. Each article shows its publish date.
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The blog describes its articles as explained by the analysts who track threats. They cover threat actors, dark web activity, ransomware and digital risk. The newest articles appear first.
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Yes. APT Groups is one of the topic chips above the list, and it opens only the articles on that topic. The Knowledge Hub also holds profiles of threat groups.
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The surface web is the part of the internet that search engines list. The deep web is content that search engines do not list, such as pages behind a login. The dark web needs special software to reach. The blog has an article that explains the three layers in plain words.