Brandefense Blog. Cybersecurity And Risk.
Threat actors, dark web activity, ransomware and digital risk, explained by the analysts who track them.
APT Groups El Machete APT Group El Machete (APT-C-43) is a suspected Spanish-speaking espionage group active since 2010. See its targets, spearphishing tactics and how to defend. 
Dark Web Top Open Source Intelligence (OSINT) Tools for Dark Web OSINT, or Open Source Intelligence, can scan to Decipher and find connections between criminals and other actors around them. 
Dark Web Top Deep Web Websites for Threat Intelligence The deep web and dark web hide sites from standard search. See which forums, markets, leak sites, IRC and Telegram channels give useful threat data. 
Fraud Credit Card Information Safety How to keep your credit card safe when you shop online, how Magecart and BIN attacks steal card data, and what to do if someone uses… 
Ransomware Top Ransomware Groups and Monitoring Techniques Conti, LockBit, Cl0p, Stormous and Lapsus$ in 2022 and where they stand now, plus free tools to identify ransomware and track leak sites. 
Dark Web Dark Web Monitoring Tools: What to Use and When Compare dark web monitoring tools by type: free open-source scripts, breach checkers and enterprise platforms, plus how to choose one. 
Fraud Phishing Campaign for Turkish Energy Sector Ransom emails told staff in the energy sector in Turkey a RAT had infected their PC. Headers show bulk sending via an SMTP relay, not a… 
Fraud Detecting Phishing Emails? Learn how to detect phishing emails: check the sender domain, greeting, links, attachments and urgency, and know what to do with a suspicious message. 
Dark Web Deep Web Intelligence Trends for Security Operation Centers (SOCs) How SOC teams use deep web intelligence to track ransomware leak sites, credential markets, botnets and identity fraud, and why each source needs checking. 
Dark Web Dark Web Sites and Search Engines: Onion Sites, Torch and the Hidden Wiki (2026) This article explores the top deep web browsers and search engines, shedding light on their uses, potential dangers, and the importance of staying secure. 
Dark Web Darknet Markets and Dark Web Marketplaces in 2026: Seized, Closed or Gone Darknet markets in 2026: which dark web marketplaces were seized, closed or exit-scammed, with dates. Is a black market website legit? No addresses given. 
Fraud Why Monitor for Phishing Sites Before Anyone Clicks? Learn why companies watch the internet for lookalike domains and fake phishing sites, how this differs from email filtering, and why takedown matters. All 42 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 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.