Security News. From Our Analysts.
Security news from the Brandefense team: new malware, vulnerabilities, data breaches and threat actor activity, summarized for security professionals.
Security News The Threat Actor Breached MailChimp Customer Accounts In the MailChimp breach, an unknown threat actor hijacked internal tools used by the company's customer support staff for account management. 
Security News Beastmode Botnet Targets Security Vulnerabilities in Totolink Routers Beastmode Botnet, a variant of Mirai Botnet, has been detected to exploit security vulnerabilities in Totolink routers to expand access to vulnerable systems. 
Security News New Phishing Campaign Detected That Deploying Remcos RAT A phishing campaign delivers Remcos RAT through a password-protected Excel file in fake payment emails. See how the chain works and how to stay safe. 
Security News Critical Vulnerability Affected SonicWall Firewall Solutions An unauthenticated, remote threat actor could exploit this vulnerability to execute arbitrary code and trigger a DoS condition on SonicWall Firewall. 
Security News macOS Systems Were Targeted by the Storm Cloud APT Group Researchers have detected unauthorized access to a MacBook Pro device running macOS 11.6 via the GIMMICK malware associated with the Storm Cloud APT group. 
Security News Malicious Applications Distributed on Google Play Detected to Target Facebook Accounts Facestealer malware targeting Android users is distributed on Google Play and third-party application stores under the name Craftsart Cartoon Photo Tools. 
Security News A New Backdoor in Microsoft: Serpent The Serpent backdoor targets French construction, real estate and government organizations through phishing, Word macros and PowerShell hidden in images. 
Security News Cyclops Blink Botnet Targets ASUS Routers and WatchGuard Devices Cyclops Blink is a Sandworm-linked botnet that infects Asus and WatchGuard routers. See what its modules do and how to protect your devices. 
Security News New 0-Day in Dompdf PDF Converter Library A 0-day vulnerability has been identified in dompdf, a PHP-based HTML to PDF conversion library, that could lead to remote code execution. 
Security News A New Linux Backdoor Detected to Deployed with Log4Shell Vulnerabilities A new Linux backdoor spreads through Log4Shell and talks to its command servers over DNS tunnelling. Read how it works and how to reduce the risk. 
Security News Two Critical Vulnerabilities Detected in Veeam Data Back-up Solution Veeam Software has released updates to two critical security vulnerabilities affecting Backup&Replication, a backup solution for virtual environments. Security News Multiple Vulnerabilities Detected in Popular Package Managers Security vulnerabilities have been detected in popular package managers, allowing threat actors to access sensitive data. All 20 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.