<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Zestix on DanSec Daily</title><link>https://blog.dansec.red/actors/zestix/</link><description>Recent content in Zestix on DanSec Daily</description><generator>Hugo</generator><language>en-gb</language><lastBuildDate>Thu, 08 Jan 2026 00:00:00 +0000</lastBuildDate><atom:link href="https://blog.dansec.red/actors/zestix/rss.xml" rel="self" type="application/rss+xml"/><item><title>Cybersecurity Brief – 2026-01-08</title><link>https://blog.dansec.red/posts/2026-01-08-cybersecurity-news/</link><pubDate>Thu, 08 Jan 2026 00:00:00 +0000</pubDate><guid>https://blog.dansec.red/posts/2026-01-08-cybersecurity-news/</guid><description>&lt;h2 id="major-incidents-or-breaches"&gt;Major Incidents or Breaches&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;The Crimson Collective extortion group claims to have stolen data on over one million Brightspeed broadband customers. Brightspeed is investigating the alleged breach.&lt;/li&gt;&#10;&lt;li&gt;Chrome extensions impersonating AITOPIA, with a combined 900,000 downloads, were found exfiltrating users’ AI chat data and browser activity.&lt;/li&gt;&#10;&lt;li&gt;Logitech Options+ and G Hub apps for macOS became non-functional after their code-signing certificate expired, preventing users from launching the applications.&lt;/li&gt;&#10;&lt;li&gt;Multiple enterprises’ file-sharing instances were breached by the &amp;ldquo;Zestix&amp;rdquo; threat actor using infostealers to obtain credentials; lack of multi-factor authentication (MFA) was identified as a common vulnerability.&lt;/li&gt;&#10;&lt;li&gt;ownCloud issued a warning to users to enable MFA following reports of credential theft and unauthorised data access.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="newly-discovered-vulnerabilities"&gt;Newly Discovered Vulnerabilities&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;A critical unauthenticated remote code execution (RCE) vulnerability (CVSS 10.0, dubbed &amp;ldquo;Ni8mare&amp;rdquo;) was disclosed in n8n, a popular workflow automation platform, affecting both self-hosted and cloud deployments.&lt;/li&gt;&#10;&lt;li&gt;Veeam released patches for several vulnerabilities in its Backup &amp;amp; Replication software, including a critical RCE flaw (CVSS 9.0) that could allow attackers to compromise backup servers.&lt;/li&gt;&#10;&lt;li&gt;jsPDF, a widely used JavaScript PDF generation library, is affected by a critical vulnerability allowing attackers to steal sensitive local files via maliciously crafted PDFs.&lt;/li&gt;&#10;&lt;li&gt;A vulnerability in Totolink range extenders enables unauthenticated attackers to start a root-level Telnet service and take over affected devices.&lt;/li&gt;&#10;&lt;li&gt;A zero-day vulnerability in discontinued D-Link DSL routers is being actively exploited to execute arbitrary commands remotely on unpatched devices.&lt;/li&gt;&#10;&lt;li&gt;CISA added actively exploited vulnerabilities in Microsoft Office and HPE OneView to its Known Exploited Vulnerabilities Catalog, urging immediate remediation.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="notable-threat-actor-activity"&gt;Notable Threat Actor Activity&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;North Korean threat actor Kimsuky is distributing mobile malware via phishing sites that use QR codes, targeting users to install malicious apps.&lt;/li&gt;&#10;&lt;li&gt;The Black Cat cybercrime group is running an SEO poisoning campaign, creating fraudulent sites advertising popular software to deliver malware to users searching for legitimate downloads.&lt;/li&gt;&#10;&lt;li&gt;The pro-Russian hacktivist group NoName057(16) continues to leverage its DDoSia tool to coordinate volunteer-driven DDoS attacks against government, media, and institutional targets associated with Ukraine and Western countries.&lt;/li&gt;&#10;&lt;li&gt;The &amp;ldquo;Zestix&amp;rdquo; actor used infostealers to compromise cloud credentials and breach approximately 50 enterprise file-sharing environments.&lt;/li&gt;&#10;&lt;li&gt;GoBruteforcer botnet activity is increasing, targeting crypto and blockchain projects by brute-forcing exposed databases on servers often configured with weak, AI-generated default credentials.&lt;/li&gt;&#10;&lt;li&gt;Threat actors are exploiting complex email routing scenarios and misconfigured spoof protections to impersonate internal domains in phishing campaigns, particularly targeting Microsoft Office 365 tenants with weak configurations.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="trends-tools-or-tactics-of-interest"&gt;Trends, Tools, or Tactics of Interest&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;QR code-based phishing is being actively observed, with attackers embedding QR codes in emails and web pages to lure victims into installing malware or visiting phishing sites.&lt;/li&gt;&#10;&lt;li&gt;There is a rise in phishing attacks exploiting email routing misconfigurations and insufficient anti-spoofing controls, enabling domain impersonation and internal phishing.&lt;/li&gt;&#10;&lt;li&gt;Cybercriminals are increasingly adopting AI to automate and scale attacks, including &amp;ldquo;vibe hacking&amp;rdquo; and the use of tools like &amp;ldquo;HackGPT&amp;rdquo; in underground forums, reducing the technical barrier to entry for threat actors.&lt;/li&gt;&#10;&lt;li&gt;AI-generated server configuration examples are contributing to insecure deployments, as seen in GoBruteforcer campaigns targeting databases with weak or default passwords.&lt;/li&gt;&#10;&lt;li&gt;Affiliate-driven hacktivist campaigns, such as those orchestrated by NoName057(16) with DDoSia, are enabling coordinated volunteer attacks at scale.&lt;/li&gt;&#10;&lt;li&gt;Non-human (AI/automation) entities are becoming integral to cybersecurity operations, increasing the attack surface and requiring new approaches to identity and access management.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="regulatory-or-policy-developments"&gt;Regulatory or Policy Developments&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;The UK government announced a new cybersecurity strategy backed by over £210 million to strengthen cyber defences across public sector organisations and government departments.&lt;/li&gt;&#10;&lt;li&gt;OpenAI confirmed that health information shared with ChatGPT Health will not be used to train its models, addressing privacy concerns related to health data.&lt;/li&gt;&#10;&lt;/ul&gt;</description></item><item><title>Cybersecurity Brief – 2026-01-06</title><link>https://blog.dansec.red/posts/2026-01-06-cybersecurity-news/</link><pubDate>Tue, 06 Jan 2026 00:00:00 +0000</pubDate><guid>https://blog.dansec.red/posts/2026-01-06-cybersecurity-news/</guid><description>&lt;h2 id="major-incidents-or-breaches"&gt;Major Incidents or Breaches&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;Brightspeed, a major US broadband provider, is investigating claims of a security breach and data theft made by the Crimson Collective extortion gang. The group alleges theft of personal information of over 1 million customers.&lt;/li&gt;&#10;&lt;li&gt;Sedgwick confirmed a cyberattack on a file transfer system at its government subsidiary, affecting agencies it serves.&lt;/li&gt;&#10;&lt;li&gt;Ledger notified customers of a data breach at third-party payment processor Global-e, resulting in exposure of personal data.&lt;/li&gt;&#10;&lt;li&gt;Multiple corporate data theft incidents have been linked to threat actor Zestix, who breached ShareFile, Nextcloud, and OwnCloud instances and is offering stolen data from dozens of companies.&lt;/li&gt;&#10;&lt;li&gt;Artisans’ Bank and VeraBank, two US banks, disclosed security incidents.&lt;/li&gt;&#10;&lt;li&gt;NordVPN denied breach claims, stating that attackers only accessed dummy data from a third-party automated testing platform.&lt;/li&gt;&#10;&lt;li&gt;No evidence of cyberattack was found in the communications failure that grounded flights in Greece.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="newly-discovered-vulnerabilities"&gt;Newly Discovered Vulnerabilities&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;n8n, an open-source workflow automation platform, disclosed a critical vulnerability (CVSS 9.9) allowing authenticated users to execute arbitrary system commands.&lt;/li&gt;&#10;&lt;li&gt;The &amp;ldquo;@adonisjs/bodyparser&amp;rdquo; npm package is affected by a critical vulnerability (CVSS 9.2) enabling arbitrary file writes on servers.&lt;/li&gt;&#10;&lt;li&gt;A critical &amp;lsquo;MongoBleed&amp;rsquo; vulnerability in MongoDB allows unauthenticated attackers to extract passwords and tokens via a memory leak. The flaw is under active attack.&lt;/li&gt;&#10;&lt;li&gt;VSCode IDE forks, including Cursor, Windsurf, Google Antigravity, and Trae, expose users to attacks via non-existent &amp;ldquo;recommended extensions&amp;rdquo; that can be abused for malicious purposes.&lt;/li&gt;&#10;&lt;li&gt;Risks associated with newer IP-based KVM devices have been highlighted, as out-of-band access could introduce security concerns.&lt;/li&gt;&#10;&lt;li&gt;WhatsApp metadata leak through device fingerprinting was reported, with Meta rolling out fixes.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="notable-threat-actor-activity"&gt;Notable Threat Actor Activity&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;Russia-aligned group UAC-0184 targeted Ukrainian military and government entities by delivering malicious ZIP archives via the Viber messaging platform.&lt;/li&gt;&#10;&lt;li&gt;The Kimwolf Android botnet has infected over 2 million devices, leveraging exposed ADB interfaces and residential proxy networks for DDoS attacks, app installs, and proxy bandwidth resale.&lt;/li&gt;&#10;&lt;li&gt;Zestix is offering for sale corporate data stolen from cloud file-sharing platforms.&lt;/li&gt;&#10;&lt;li&gt;The Crimson Collective extortion gang claimed responsibility for the Brightspeed breach.&lt;/li&gt;&#10;&lt;li&gt;US cyber professionals pleaded guilty to working as affiliates of the ALPHV/BlackCat ransomware group.&lt;/li&gt;&#10;&lt;li&gt;The RondoDox botnet has expanded operations by exploiting React2Shell vulnerabilities, targeting Next.js servers for cryptomining and botnet payload delivery.&lt;/li&gt;&#10;&lt;li&gt;New VVS Stealer malware, written in Python, is targeting Discord accounts to harvest credentials and tokens.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="trends-tools-or-tactics-of-interest"&gt;Trends, Tools, or Tactics of Interest&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;The ClickFix social engineering campaign is targeting the European hospitality sector, using fake Windows Blue Screen of Death (BSOD) screens to trick users into executing malware.&lt;/li&gt;&#10;&lt;li&gt;Threat actors are increasingly abusing cloud file-sharing platforms for corporate data theft.&lt;/li&gt;&#10;&lt;li&gt;The Kimwolf botnet demonstrates the growing use of residential proxy networks for botnet expansion and monetization.&lt;/li&gt;&#10;&lt;li&gt;AI-powered IDEs recommending non-existent extensions present a new supply chain risk vector.&lt;/li&gt;&#10;&lt;li&gt;Agentic AI adoption is raising identity management challenges, with AI agents acting as a new class of identity that CISOs must manage.&lt;/li&gt;&#10;&lt;li&gt;CISA&amp;rsquo;s Known Exploited Vulnerabilities (KEV) catalog expanded by 20% in 2025, now including 1,484 entries, with 24 new vulnerabilities known to be exploited by ransomware groups.&lt;/li&gt;&#10;&lt;li&gt;Automated License Plate Reader (ALPR) surveillance is discussed as a privacy and security concern.&lt;/li&gt;&#10;&lt;li&gt;Ineffectiveness of AI guardrails was highlighted following an incident involving Grok generating inappropriate content.&lt;/li&gt;&#10;&lt;/ul&gt;&#10;&lt;h2 id="regulatory-or-policy-developments-affecting-the-security-industry"&gt;Regulatory or Policy Developments Affecting the Security Industry&lt;/h2&gt;&#10;&lt;ul&gt;&#10;&lt;li&gt;The early release of Ilya Lichtenstein, convicted for the Bitfinex cryptocurrency exchange hack, under the US First Step Act, was reported.&lt;/li&gt;&#10;&lt;/ul&gt;</description></item></channel></rss>