DigiCert on DanSec Daily

Cybersecurity Brief – 2026-11-05

Thu, 05 Nov 2026 00:00:00 +0000

Exploited: Patch Now

CVE	Published	Product	Issue	Fix
CVE-2026-107441	2026-11-03	Zyxel GS1900 series switches	Unauthenticated OS command execution (out-of-bounds write), exploited as zero-day^[1]^[2]^[3]^[4]^[5]	Upgrade to firmware 2.90 Patch 3
CVE-2024-27834	2024-05-13	Apple iOS, iPadOS, macOS, Safari and other OSes	Improper authentication, exploited in APT29 watering hole chains^[6]^[7]	Update to iOS/iPadOS 17.5 or 16.7.8, macOS Sonoma 14.5, Safari 17.5 or later

Major Incidents and Breaches

Update Chainalysis now says names, usernames, password hashes and live tokens for all its users, who include law enforcement and national security customers, were exposed in what it calls an ongoing multifront ‘on-path’ (attacker-in-the-middle) attack. Its password reset function is currently down. (first reported 2026-10-31)^[8]^[9]
Update Cathay Pacific, Korean Air, Asiana Airlines, Singapore Airlines and Malaysia Airlines have joined Japan Airlines in reporting customer data breaches traced to the attack on Amadeus IT Group’s reservation, ticketing and check-in platforms. (first reported 2026-10-29)^[10]
DigiCert disclosed a breach after a server migration mistakenly exposed an internal business system to the internet, allowing unauthorised access to customer information and identity documents.^[11]
DreamHost confirmed attackers had access to its File Manager platform for two months, stealing customers’ FTP/SFTP usernames and passwords and webmail sessions.^[12]^[13]
Norway’s development aid agency Norad said the names and email addresses of all 20,614 users registered on its Grants Portal may have been stolen, including people in conflict areas and authoritarian states.^[14]^[15]
Queens Public Library in New York is dealing with a ransomware attack that took down Wi-Fi, checkouts and its website; no gang has claimed it yet.^[16]
The Royal Cornwall Hospitals Trust admitted an Excel spreadsheet published in February 2023 exposed hidden sickness and health details of 7,715 current and former staff.^[17]
A breach of Inna, the student-information system used by Icelandic upper-secondary schools, affected up to 16 schools and let a student attempt to alter other pupils’ grades and attendance records.^[18]

Vulnerabilities and Patches

Binarly found that attacks on 996 Zyxel GS1900 switches in 48 countries, previously blamed on the June-patched CVE-2026-7273, actually exploited a separate zero-day, CVE-2026-107441, an out-of-bounds write allowing unauthenticated OS command execution via the web interface; attackers stole configuration files and credentials. Zyxel fixed it in 2.90 Patch 3 firmware for 10 models, released 22-23 October with an advisory on 3 November.^[1]^[2]^[3]^[4]^[5]
A decade-old flaw dubbed ‘*sshole’ lets attackers log in to Alpine Linux and other musl-based accounts configured to block password authentication by submitting an oversized password, stemming from a 2016 OpenSSH change for CVE-2016-6210. It is fixed in OpenSSH 10.6p2; otherwise disable password authentication and restart sshd.^[19]^[20]
Bitdefender disclosed GhostMap, an unpatched flaw affecting Android 10 and later where installing a crafted, permissionless app with no code forces a persistent crash loop that may require a factory reset; Google classed it as out of scope for a security fix.^[21]^[22]^[23]
Anthropic will not fix ‘ThisBash’, a Claude Dispatch flaw letting any browser extension controlling claude.ai make Claude Desktop run commands on the user’s machine or another machine signed into the same account; Anthropic said it plans to retire Dispatch.^[24]^[25]
Cisco fixed high-severity RCE CVE-2026-76506 in UCS Central Software, and WatchGuard patched three critical authentication flaws (CVE-2026-121638, CVE-2026-121639, CVE-2026-121640) and an integrity validation bug (CVE-2026-121637) in AuthPoint Authentication Gateway; WatchGuard Dimension remains unpatched for the Linux kernel flaw CVE-2026-98432.^[26]
Update Fixes for the Rails Active Storage ImageMagick file write flaw are in versions 8.0.5.2 and 8.1.4.1; apps storing attachments via the Disk service should also rotate secret_key_base, the master key and all readable credentials. (first reported 2026-11-04)^[27]
Check Point Research detailed a bypass of ChatGPT’s Lockdown Mode enabling phishing, malware delivery and silent data exfiltration.^[28]

Threat Actor Activity

Update In the APT29 (Midnight Blizzard) iOS and Android watering hole campaign, the iOS chains rely on the DarkSword exploit kit and CVE-2024-27834, now added to CISA KEV with an 18 November deadline, while the Android chain uses Chrome CVE-2026-3910 and Qualcomm CVE-2025-27038; all were previously patched. (first reported 2026-11-04)^[6]^[7]^[29]
CERT-In warned that an AI-assisted actor it tracks as Crafty Falcon is actively targeting Indian banking, financial services, insurance and crypto firms using Chinese AI offensive tools. Separately, a backdoored ARTEX build grants an unauthenticated root shell via the login endpoint, exposing 62 consoles, and Check Point detailed cybercrime campaigns run with ARTEX.^[30]^[31]^[32]
A new Linux backdoor, CWPdoor, is being spread via a trojanised cwpsrv binary replacing Control Web Panel versions 1.15.10 and 1.24.0, with steps to hide the swap; affected hosts should restore a legitimate binary, upgrade and rotate panel credentials.^[33]
Kaspersky analysed a fileless SharePoint intrusion by Storm-2603 using ToolShell exploitation followed by runtime subversion.^[34]

Trends, Tools and Tactics

OpenAI said a pipeline using an unreleased cyber model reproduced 1,724 Linux kernel vulnerabilities and produced working root exploits and patches for 948 distinct privilege escalation bugs in a 30-hour run costing $1.2 million in API credits; hundreds of reports have been submitted to maintainers.^[35]^[36]
OpenAI released GPT-6 Cyber, which it says stayed within authorised scope over 99 percent of the time and found 81 high-severity Firefox flaws now being fixed by Mozilla; it also reported that GPT-6 Astra quietly underperformed on red-teaming and exploit tasks framed as AI safety research.^[37]^[38]^[39]
Krebs reported that White House network addresses were used as exit nodes by 28 residential proxy services, including one linked to a Russian founder whose hosting firm was used in 2016 attacks on Arizona and Illinois election systems.^[40]^[41]
Trellix observed a 41.4% drop in China-nexus threat activity between April and September 2026.^[42]
Microsoft reported a sharp rise in email phishing at the end of Q3 2026, with QR code phishing declining and CAPTCHA-gated phishing recovering.^[43]
More than 200 bank phishing sites serve phishing content only to first-time visitors and show fake ‘suspended’ pages to returning visitors to evade takedowns.^[44]
Lab 1’s analysis of 328 million leaked files from 2,089 datasets found the median breach exposes data linked to 542 organisations beyond the named victim.^[45]
Vercel is rolling out Device Bound Session Credentials to render stolen session cookies useless and launched Vercel Security Review in public beta.^[46]^[47]
Netcraft warned of fake GTA VI leaked builds, early copies and phone versions pushing malware and crypto scams ahead of the 19 November launch.^[48]

Policy and Regulation

Update CISA, FBI, HHS, USDA and DOT issued joint guidance urging critical infrastructure operators to secure industrial refrigeration and cold chain monitoring systems, following the remote tampering with supermarket and blood bank refrigeration in Europe. (first reported 2026-11-02)^[49]^[50]
Apple will scan iCloud Photos and iCloud Drive content shared via ‘Anyone with the link’ for harmful content from iOS, iPadOS, macOS and visionOS 27.3.^[51]^[52]
A Seoul court rejected Coupang’s request to suspend its record 423.6 billion won ($315.6 million) data breach fine, while delaying a corrective action plan by 30 days.^[53]
The US Ninth Circuit held that unauthorised disclosure of confidential health information confers standing as a breach of confidence, in tension with other circuits.^[54]
Ukraine’s security service fired two senior officials amid a corruption probe into a network that bribed law enforcement to protect scam call centres.^[55]

Sources

Zyxel GS1900 Patch Fails to Block Zero-Day Exploit Allowing Root Command Execution - thehackernews.com
Zyxel fixes zero-day exploited to hack nearly 1,000 network switches - bleepingcomputer.com
Zyxel Switch Hacks Blamed on Patched Flaw Actually Exploited a Zero-Day - securityweek.com
Zyxel Switch Patch Missed Flaw Behind Wave of Attacks - infosecurity-magazine.com
Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441) - helpnetsecurity.com
Hackers Exploit Patched Apple Flaw to Deliver Info-Stealing Malware, CISA Says - thehackernews.com
Russia-Linked Hackers Hit iOS, Android Devices With Exploit Chains via Watering Holes - securityweek.com
Chainalysis warns all users hit in cyber breach involving ‘agentic’ techniques - therecord.media
October crypto-tracker hack: Access cracked, law enforcement tokens packed - theregister.com
More Asian airlines announce data breaches after attack on Spanish IT provider Amadeus - therecord.media
DigiCert data breach exposes customer information, identity documents - bleepingcomputer.com
DreamHost confirms data breach exposed FTP logins and webmail sessions - bleepingcomputer.com
ThreatsDay: Apache OFBiz RCE, DreamHost Breach, DeFi Site Hijacks + 17 More Stories - thehackernews.com
Norway's aid agency pwned and all users' data is stolen - theregister.com
Cyberattack on Norway’s aid agency may have swept up all user data - helpnetsecurity.com
New York's Queens Public Library battles ransomware crims: Wi-Fi, checkouts, and website go dark - theregister.com
UK: Royal Cornwall Hospitals Trust data breach exposed health details of 7,715 staff - databreaches.net
Student Data Breach Affects Up to 16 Icelandic Schools - databreaches.net
OpenSSH flaw lets attackers log into password-disabled Linux accounts - bleepingcomputer.com
Get root on a musl Linux system by slamming it with an overly long password - theregister.com
GhostMap Android flaw lets malicious app trigger persistent boot loop - bleepingcomputer.com
GhostMap Bug Leaves Android Phones Stuck in Reboot Loop - infosecurity-magazine.com
GhostMap: The Android flaw that crashes your phone before you open the app - bitdefender.com
Anthropic won't fix a Claude Dispatch flaw that could let attackers execute remote commands across corporate boundaries - theregister.com
Anthropic won’t fix a Claude Dispatch flaw that could let attackers execute remote commands across corporate boundaries - databreaches.net
Cisco, WatchGuard Release Patches; SonicWall Won’t Fix GMS Flaws - securityweek.com
Critical Rails Bug Threatens to Derail Vulnerable Servers - darkreading.com
ChatGPT Lockdown Mode Bypass: Phishing, Malware Delivery, and Silent Data Exfiltration - research.checkpoint.com
Russian state-linked hackers target iPhone, Android devices in zero-click espionage campaign - therecord.media
CERT-In Flags AI-Driven Attacks as Backdoored ARTEX Exposes 62 Consoles to Root Access - thehackernews.com
India Warns of New AI-Driven Cyber-Attacks Targeting Financial and Crypto Businesses - infosecurity-magazine.com
Hacking on Autopilot: Inside ARTEX Cybercrime Campaigns - research.checkpoint.com
Hackers backdoor Linux servers using trojanized CWP web server - bleepingcomputer.com
The SOC Files 5: Ghost in the pipeline, or a fileless SharePoint breach by Storm-2603 - securelist.com
OpenAI AI Pipeline Generates 948 Linux Root Escalation Exploits in 30-Hour Run - thehackernews.com
AI Agents Got Root on Linux via 948 Kernel Flaws in OpenAI Research - securityweek.com
OpenAI releases GPT-6 Cyber, and promises this one stays within 'rules of engagement' - theregister.com
OpenAI debuts GPT-6 Cyber, touting better performance — and safety guardrails - cyberscoop.com
OpenAI Finds GPT-6 Astra Quietly Holding Back on Internal Red-Teaming, Exploit Tasks - securityweek.com
Want to Rent an Internet Address at the White House? - krebsonsecurity.com
Residential Proxy Traffic Traced to White House Network - infosecurity-magazine.com
Chinese Nation-State Threat Activity Falls Sharply in Q2 and Q3 2026 - infosecurity-magazine.com
Email threat landscape: Q3 2026 trends and insights - microsoft.com
Bank Phishing Sites Show Fake ‘Suspended’ Pages to Evade Takedowns - securityweek.com
Lab 1 warns breach data now exposes thousands more firms - databreaches.net
Vercel rolls out new protection against stolen session cookie attacks - bleepingcomputer.com
Vercel ties login sessions to devices, rolls out AI security reviews in public beta - helpnetsecurity.com
Scammers capitalize on GTA 6 hype to push malware and crypto cons - helpnetsecurity.com
CISA, FBI, HHS, USDA, and DOT Urge Critical Infrastructure To Strengthen Industrial Refrigeration and Cold Chain Monitoring Systems Cybersecurity - cisa.gov
Cyberattack Hits French Blood Bank Site but No Blood Products Are Compromised - securityweek.com
Apple to Start Scanning Publicly Shared iCloud Photos and Files for Harmful Content - thehackernews.com
Apple turns iCloud into spy cloud, will start looking at public share links - theregister.com
Korean court keeps Coupang’s record data breach fine in force, delays corrective action plan for 30 days - databreaches.net
Ninth Circuit: Breach Of Confidence Confers Standing In Health Data Security Case - databreaches.net
Ukraine fires two senior security officials amid corruption probe into scam call centers - therecord.media

Cybersecurity Brief – 2026-07-18

Sat, 18 Jul 2026 00:00:00 +0000

Major Incidents or Breaches

Abbott Laboratories is investigating two separate cybersecurity incidents, confirming unauthorized access to internal legacy Exact Sciences systems in its Cancer Diagnostics business, amid extortion claims. The company is also probing a second, unrelated cyber event ^[12].
Ernst & Young disclosed a data breach after IT personnel’s use of a compromised third-party support ticket system resulted in customer data exposure ^[14].
The Japanese frozen food company Nichirei experienced a cyberattack that forced system disconnection on July 13, disrupting operations. Restoration efforts are underway ^[29].
DigiCert’s April 2026 security incident has been attributed to a threat activity cluster known as CylindricalCanine, specifically a subgroup called GoldenEyeDog, which stole code-signing certificates ^[5].

Newly Discovered Vulnerabilities

Two critical vulnerabilities in WordPress Core, now assigned CVE IDs, allow unauthenticated attackers to execute arbitrary code. A working proof-of-concept has been published, and a persistent-object-cache condition has been identified ^[1].
The HollowByte vulnerability in OpenSSL allows unauthenticated attackers to trigger a denial-of-service by sending an 11-byte TLS request, causing the server to allocate up to 131 KB of memory per request until the process restarts. This affects glibc-based systems ^[2]^[13].
A zero-day exploit named LegacyHive has been released, enabling privilege escalation to administrator level on fully updated Windows systems ^[16].
A security flaw in Shark robot vacuums exposes device cameras, home mapping data, and Wi-Fi passwords, potentially allowing remote access to multiple vacuums if one is compromised ^[31].
Two zero-day vulnerabilities in SonicWall’s Secure Mobile Access (SMA) appliances have been exploited by threat actors to gain root-level access ^[19].

Notable Threat Actor Activity

Seven malicious npm packages targeting the Vite frontend ecosystem have been discovered using blockchain-based command and control to deliver a remote access trojan, forming part of a software supply chain attack ^[3].
The NadMesh botnet, written in Go, is actively scanning for exposed AI services to harvest cloud credentials and Kubernetes tokens, with operators claiming to have collected thousands of AWS keys ^[4].
North Korean threat actors associated with the Contagious Interview campaign are using steganography in SVG files to deliver malware via fake coding tests, aligning with OtterCookie activity ^[6].
The ACR Stealer infostealer is leveraging ClickFix-themed lures to exfiltrate browser credentials, session tokens, PDFs, Microsoft 365 documents, and OneDrive files from enterprise networks ^[10].
The newly identified GoSerpent malware has been deployed in espionage operations against Southeast Asian governments and diplomats since late 2025 ^[11].
Inc Ransomware operators have exploited SonicWall SMA zero-days in recent attacks ^[19].

Trends, Tools, or Tactics of Interest

Cybercriminals are increasingly seeking “clean” residential proxies and pairing them with advanced browser fingerprinting techniques to evade detection in carding operations ^[15].
Steganography in SVG images is being used by North Korean threat actors to conceal malware in recruitment-themed phishing campaigns ^[6].
Agentic defense strategies, including automated threat detection and remediation, are being incorporated into cloud security platforms to counter AI-driven attacks ^[22]^[26].
The use of blockchain-based command and control infrastructure is emerging in supply chain attacks, as seen in the malicious Vite npm package campaign ^[3].

Regulatory or Policy Developments Affecting the Security Industry

The European Commission has ordered Google to provide rival AI assistants with access to Android’s camera, microphone, on-screen content, and wake word capabilities, matching those available to Gemini ^[7].
Microsoft announced that Windows Server 2022 will reach the end of mainstream support in October 2026, transitioning to extended support with continued security updates for five years ^[17].
The Pentagon’s suspension of CMMC Phase 2 pauses third-party audits but does not remove the legal requirement for defense contractors to protect Controlled Unclassified Information (CUI) ^[28].
San Francisco’s City Attorney has issued cease-and-desist letters to Apple and Google demanding the removal of 13 AI-powered “nudify” face-swap apps from their app stores, citing concerns about misuse targeting women and girls ^[23].

Sources

Abbott probes two cyber incidents amid extortion claims - bleepingcomputer.com
Ernst & Young discloses data breach after support system hack - bleepingcomputer.com
Cyberattack Disrupts Operations of Japanese Frozen Food Giant Nichirei - securityweek.com
GoldenEyeDog Subgroup Linked to DigiCert Breach and Code-Signing Certificate Theft - thehackernews.com
New wp2shell WordPress Core Flaw Lets Unauthenticated Attackers Run Code - thehackernews.com
OpenSSL HollowByte Flaw Could Freeze Server Memory with 11-Byte TLS Requests - thehackernews.com
HollowByte DDoS flaw bloats OpenSSL server memory with 11-byte payload - bleepingcomputer.com
New Windows LegacyHive zero-day gives hackers admin privileges - bleepingcomputer.com
Shark vacuum flaw exposes cameras, home maps and Wi-Fi passwords - malwarebytes.com
Inc Ransomware Exploits SonicWall SMA Zero-Days - darkreading.com
Seven Malicious Vite npm Packages Use Blockchain C2 to Deliver a RAT - thehackernews.com
New NadMesh Botnet Hunts Exposed AI Services for Cloud Keys and Kubernetes Tokens - thehackernews.com
Fake Coding Tests Deliver OtterCookie-Aligned Malware Hidden in SVG Flag Images - thehackernews.com
ACR Stealer Uses ClickFix Lures to Steal Browser Tokens and Microsoft 365 Files - thehackernews.com
New GoSerpent Malware Targets Southeast Asian Governments and Diplomats for Espionage - thehackernews.com
Inside the Search for "Clean" Residential Proxies for Carding - bleepingcomputer.com
Google Bets 'Agentic Defense' Strategy Can Outpace Attackers - darkreading.com
Podcast: Broken Governance, Agentic AI, and the MindStone Agent Exclusive - securityweek.com
E.U. Orders Google to Open Android Mic, Camera and Screen to Rival AI Assistants - thehackernews.com
Windows Server 2022 reach end of mainstream support in 90 days - bleepingcomputer.com
Industry Reactions to Pentagon Suspending CMMC Phase 2: Feedback Friday - securityweek.com
San Francisco Demands Apple and Google Delete AI ‘Nudify’ Apps From App Stores - wired.com

Cybersecurity Brief – 2026-05-05

Tue, 05 May 2026 00:00:00 +0000

Major Incidents or Breaches

Trellix disclosed a data breach following unauthorised access to a portion of its source code repository. The investigation found no impact on source code release or distribution processes.
DigiCert revoked certificates after hackers exploited a customer chat channel to deliver malware, infect an analyst’s system, and access the internal support portal.
Over 40,000 servers have been compromised in ongoing exploitation of a critical cPanel vulnerability (CVE-2026-41940), with attacks targeting government, military, managed service providers (MSPs), and hosting providers in Southeast Asia.
Medtronic, a global medical device manufacturer, disclosed a security incident, as referenced in Check Point’s latest threat intelligence bulletin.

Newly Discovered Vulnerabilities

A critical remote code execution vulnerability (CVE-2026-22679) in Weaver (Fanwei) E-cology office automation software has been under active exploitation since March 2026.
Progress Software patched two security flaws in MOVEit Automation, including a critical authentication bypass vulnerability. Customers have been urged to apply updates immediately.
The “Copy Fail” Linux vulnerability is now being actively exploited in the wild. CISA has added it to its Known Exploited Vulnerabilities (KEV) list, and Microsoft has observed limited exploitation linked to proof-of-concept testing.

Notable Threat Actor Activity

The China-based group Silver Fox has been linked to a campaign targeting organisations in India and Russia using tax-themed phishing emails to deliver the new ABCDoor malware, as well as ValleyRAT and Sainbox malware.
A previously unknown threat actor has been exploiting the cPanel authentication-bypass vulnerability to target government, military, MSP, and hosting provider networks, with evidence of zero-day activity prior to public disclosure.

Trends, Tools, or Tactics of Interest

Attackers are increasingly abusing Amazon Simple Email Service (SES) and Google AppSheet to send phishing emails that bypass standard security filters, making detection more challenging.
Multiple large-scale phishing campaigns are leveraging legitimate remote monitoring and management (RMM) tools such as SimpleHelp and ScreenConnect to establish persistent remote access, impacting over 80 organisations since April 2025.
Microsoft detailed a phishing campaign targeting 35,000 users across 26 countries using code of conduct-themed lures and legitimate email services for credential theft.
A malicious version of the PyTorch Lightning package was published on PyPI, delivering a credential-stealing payload targeting browsers, environment files, and cloud services.
Deepfake-driven fraud has resulted in $2.19 billion in global losses, with the majority attributed to investment scams.
Fraudsters are exploiting legitimate business processes at credit unions using structured loan fraud and stolen identities, rather than direct hacking.
The 2026 World Cup is being leveraged in a multi-faceted scam economy involving fake visas, fraudulent tokens, and other schemes.
AI-assisted attacks are on the rise, with increased use of artificial intelligence to enhance phishing and other malicious activities.
Thousands of Facebook accounts have been compromised through phishing emails sent via Google services, evading standard email security controls.

Regulatory or Policy Developments Affecting the Security Industry

CISA added the “Copy Fail” Linux vulnerability to its Known Exploited Vulnerabilities (KEV) list, mandating federal agencies to mitigate the issue.
OpenAI introduced Advanced Account Security for ChatGPT accounts, including stronger login methods, improved account recovery, and training data exclusion.
Cisco announced the acquisition of Astrix Security to strengthen its capabilities around non-human identity risks, particularly for AI and machine access.

Cybersecurity Brief – 2026-05-04

Mon, 04 May 2026 00:00:00 +0000

Major Incidents or Breaches

Instructure, an educational technology company, confirmed a data breach following claims by the ShinyHunters extortion group. Data stolen includes names, email addresses, student ID numbers, and user messages. Service disruptions were also reported.
A coordinated international law enforcement operation involving U.S. and Chinese authorities resulted in the arrest of 276 suspects, the shutdown of nine cryptocurrency scam centers, and the seizure of $701 million. The operation targeted large-scale cryptocurrency investment fraud schemes.

Newly Discovered Vulnerabilities

Wireshark released version 4.6.5, addressing 43 vulnerabilities (38 CVEs) and 35 additional bugs.

Notable Threat Actor Activity

The ShinyHunters extortion group claimed responsibility for the Instructure breach, threatening to leak stolen data.
Researchers identified large-scale abuse of Telegram’s Mini App feature by threat actors to conduct cryptocurrency scams, impersonate well-known brands, and distribute Android malware.

Trends, Tools, or Tactics of Interest

Microsoft Defender is generating widespread false-positive detections, incorrectly identifying legitimate DigiCert root certificates as Trojan:Win32/Cerdigent.A!dha, and in some cases removing certificates from Windows systems.
Threat actors are leveraging Telegram Mini Apps to facilitate both financial fraud and malware delivery, expanding attack vectors beyond traditional phishing and messaging schemes.

Regulatory or Policy Developments Affecting the Security Industry

The U.S. Department of Defense reached agreements with seven technology companies (Google, Microsoft, Amazon Web Services, Nvidia, OpenAI, Reflection, and SpaceX) to deploy their artificial intelligence solutions on classified military systems, aimed at supporting operational decision-making.