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 F5 BIG-IP Security Vulnerability Allows Remote Code Execution: CVE-2023-46747 F5 BIG-IP remote code execution flaw CVE-2023-46747 (CVSS 9.8) lets attackers with network access run system commands. See affected versions and fixes. 
Security News Okta’s Data Breach Victims: Cloudflare, 1Password, and 170 Others Okta support system breach explained: how stolen HAR file session tokens led to incidents at 1Password and Cloudflare, plus the IoCs Okta published. 
Security News CVE-2023-22515: Atlassian Confluence Zero-Day | Actively Exploited CVE-2023-22515 lets attackers create admin accounts in Atlassian Confluence 8.0.0 to 8.5.1. See affected and fixed versions, CVSS and how to respond. 
Security News Perspective of the Month | Anonymous Sudan | June – July 2023 In June 2023, Anonymous Sudan targeted Microsoft with a massive DDoS attack, causing significant disruptions and outages across various Microsoft services. 
Security News Advanced Backdoor Attack “SUBMARINE” Uncovered in Barracuda Email Security Gateway (ESG) Appliances What is the SUBMARINE backdoor? It hit Barracuda Email Security Gateway appliances via CVE-2023-2868. See how it works and how to respond to it. 
Security News FIN8 Group Uses Sardonic Backdoor for BlackCat Ransomware Attacks FIN8, also called Syssphinx, used a modified Sardonic backdoor in BlackCat ransomware attacks. See how the backdoor works and how to reduce the risk. Security News Perspective of the Month | APT Groups | May 2023 Which APT groups were active in May 2023? Read how the Sidewinder APT group used polymorphic attacks against Pakistan and Turkey, and how to defend. 
Security News MOVEit Transfer Software Exploited Through Critical Zero Day Vulnerability 2023 MOVEit Transfer zero day CVE-2023-34362 is a critical SQL injection flaw (CVSS 9.8) exploited from May 2023. See the facts, CISA attribution, what to do. 
Security News “Triangulation Trojan” Launches Sophisticated Attack on Apple Devices The Triangulation Trojan is a targeted spyware attack on Apple iPhones using an invisible iMessage. Learn how it works, how to check a device and stay… Security News Perspective of the Month | APT Groups Perspective of the month on APT groups: Lazarus DeathNote on Linux, BlueNoroff RustBucket on macOS and Alloy Taurus PingPull on Linux. Read the analysis. 
Security News BellaCiao: The New Malware From Iran’s Charming Kitten BellaCiao is a custom dropper malware that researchers link to Iran's Charming Kitten. See how it works and how to reduce your attack surface. 
Security News Threat Actors Behind GoAnywhere Attacks Target Hitachi Energy Hitachi Energy confirmed a data breach after Cl0p exploited the GoAnywhere MFT zero-day CVE-2023-0669. See what happened and how to reduce your risk. 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.