APT Groups. From Our Analysts.
Profiles and analysis of APT groups and state-linked threat actors: who they target, which tools and techniques they use, and how to defend against them.
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. 
APT Groups Advanced Persistent Threats (APTs): Identifying and Combating Stealth Attacks Learn what an APT (advanced persistent threat) is, which warning signs to look for in traffic, data access, software and logs, and how to defend a… 
APT Groups Brandefense’s Perspective on Understanding APT: Decoding the Tactics of APT Groups Learn how APT groups break in, stay hidden and steal data, how they differ from common cyber attacks, and which steps help defend against them. 
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. 
APT Groups Lazarus APT Group (APT38) Lazarus APT is a North Korean state-sponsored group active since at least 2009. See its aliases, targets, history, tools and how to defend against it. 
APT Groups Mythic Leopard APT Group Mythic Leopard, also called APT36 and Transparent Tribe, is a suspected Pakistan-based group. See aliases, targets, timeline, tools and defenses. 
APT Groups Dynamite Panda APT Group Dynamite Panda is the name used for APT18, a threat group active since at least 2009. See its targets, malware, techniques and how to defend against… All 8 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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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 count at the top of the blog page shows the current total, and each topic chip shows how many articles that topic holds. 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.