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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.

All471 APT Groups94 Dark Web28 Digital Risk Protection122 Fraud14 Ransomware48 Sector Analysis34 VIP Security7
Cactus ransomware group APT card illustrating a stealth-focused cyber extortion threat targeting enterprisesAPT Groups Inside the Operations of Cactus: The Rise of a Stealth-Focused Ransomware Threat Cactus is a financially motivated ransomware group leveraging VPN vulnerabilities, encrypted tunneling, and double extortion tactics to target enterprises across the US, UK, and Europe. Jan 07, 20266 Min Operation ForumTroll APT card showing Russia-aligned influence and espionage threat actorAPT Groups Operation ForumTroll: What Is Confirmed About the Chrome Zero-Day (CVE-2025-2783) A deep-dive into Operation ForumTroll, a high-risk Russia-aligned threat actor conducting espionage, phishing, and influence operations across Eastern Europe. Jan 06, 20263 Min PlushDaemon APT card representing a China-aligned cyber espionage threat actorAPT Groups PlushDaemon APT: An In-Depth Analysis of a Stealthy China-Aligned Cyber Espionage Group PlushDaemon is a stealthy, China-aligned advanced persistent threat (APT) group focused on long-term cyber espionage. Active since the early 2010s, the group primarily targets government, defense,… Jan 05, 20268 Min Smishing Triad cybercrime group using SMS phishing and brand impersonation tacticsAPT Groups Smishing Triad: A Global Cybercrime Syndicate Targeting Postal and Financial Networks The Smishing Triad is a high-risk, financially motivated cybercrime syndicate operating smishing-as-a-service campaigns since 2022. By impersonating postal, banking, and public service brands, the group targets… Jan 04, 20268 Min Silent Chollima APT45 APT card showing a North Korea–linked threat actor focused on cyber espionage and revenue generationAPT Groups Silent Chollima: North Korea’s Dual-Track Cyber Weapon Silent Chollima (APT45), also known as Onyx Sleet, is a North Korea–linked threat actor operating at the intersection of cyber espionage and financially motivated attacks. Active… Dec 30, 20256 Min OldGremlin APT threat group profile visual representing a Russian-speaking hybrid ransomware and espionage actorAPT Groups OldGremlin: A Stealthy Russian-Speaking Ransomware and Espionage Threat Group Evolving Into a Precision Striking APT OldGremlin is a high-risk, Russian-speaking threat group operating since 2020 that blends APT-level stealth, long-term reconnaissance, and double-extortion ransomware. Its precision-driven campaigns pose significant risk to… Dec 29, 20257 Min OilRig APT34 Helix Kitten Iran-linked cyber espionage threat actor targeting energy and defense sectorsAPT Groups OilRig: Iran’s Persistent Espionage Arm in Cyberspace OilRig, also known as APT34 or Helix Kitten, is one of Iran’s most persistent cyber espionage groups. Active since 2014, the group targets energy, defense, and… Dec 24, 20258 Min Callisto APT cyber espionage group – Russia-linked threat actor targeting NATO and government institutionsAPT Groups Callisto APT: Russia’s Persistent Espionage Operator Callisto is a long-running Russia-linked APT group specializing in cyber espionage against NATO, EU, and government organizations. This analysis explores its identity, tactics, cloud-focused operations, and… Dec 23, 20256 Min Crafty Camel APT card representing Iran-linked cyber espionage group targeting government and energy sectorsAPT Groups Crafty Camel APT: Iran’s Expanding Espionage Footprint in the Modern Cyber Battlespace Crafty Camel is an Iran-aligned advanced persistent threat leveraging spearphishing, cloud credential theft, and identity-centric attacks to conduct long-term cyber espionage. Active since 2017, the group… Dec 18, 20255 Min Angry Likho APT group profile representing a pro-Russian cyber espionage threatAPT Groups Angry Likho: Inside a Rapidly Growing Espionage Threat Targeting Eastern Europe Angry Likho is a rapidly evolving pro-Russian cyber espionage group targeting Eastern European governments and defense organizations. This in-depth threat intelligence report analyzes its motivations, TTPs,… Dec 17, 20257 Min GALLIUM APT group profile showing China-linked cyber espionage targeting telecom and government networksAPT Groups GALLIUM APT: What MITRE ATT&CK Says GALLIUM is a cyberespionage group that MITRE ATT&CK says has been active since at least 2012, mainly targeting telecom, finance and government. See what is confirmed… Dec 16, 20252 Min Illustration of an octopus with glowing red eyes and glasses representing the TraderTraitor APT group, a North Korea–linked Lazarus subgroup targeting crypto and blockchain companies.APT Groups TraderTraitor: North Korea’s Crypto Heist Machine TraderTraitor—also known as Jade Sleet and UNC4899—is one of North Korea’s most aggressive financial APT groups. Responsible for major crypto thefts, including the $1.5B ByBit hack,… Dec 06, 20256 Min
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FAQ

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.

  • New articles are added several times a month. The newest come first, and every article shows its publish date.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.