WeChat on DanSec Daily

Cybersecurity Brief – 2026-10-26

Mon, 26 Oct 2026 00:00:00 +0000

Major Incidents or Breaches

Genesys disclosed a security incident exposing customer data from internal systems. The Genesys Cloud, Genesys Engage, and Genesys Engage Cloud platforms were not affected ^[23].
Quest Diagnostics reported a breach impacting patient records and personal information ^[32].
953 online stores were found infected as part of a long-running malware campaign, where injected loader code served malicious payloads or remained dormant to avoid detection ^[26].
A Chinese national was extradited to the US for alleged involvement in a cryptocurrency investment scam that defrauded 174 victims of nearly $37 million ^[13].

Newly Discovered Vulnerabilities

Two critical remote code execution (RCE) vulnerabilities, CVE-2026-109618 and CVE-2026-109619, collectively known as PHP2Shell, are being actively exploited in the wild. Industrial vendors including Siemens, Schneider Electric, and ABB confirmed some products are affected. Exploitation has shifted from probing to successful shell deployments against honeypots ^[15]^[22]^[25].
Two critical flaws were disclosed in Wasmtime, a WebAssembly runtime, allowing malicious modules to escape the intended sandbox ^[4].
An out-of-bounds write flaw in Google’s Brotli decoder affects Node.js, .NET, PowerShell, and Python packages, enabling code execution and prompting widespread patching efforts ^[28].
Unpatched vulnerabilities in Tailscale SSH allow a compromised device to gain root access on other reachable servers within the network ^[10].
The update process for the abandoned Popcorn Time streaming app was found to leave millions of devices exposed to remote hijacking ^[30].

Notable Threat Actor Activity

Ongoing exploitation attempts targeting the PHP2Shell vulnerabilities have been observed, with evidence of successful post-exploitation activity and suspected global scanning by North Korean actors ^[11]^[15]^[25].
An automated campaign, dubbed Gheist, is using stolen GitHub tokens to inject workflows that exfiltrate repository secrets via GitHub Actions logs ^[8].
A Microsoft 365 campaign has compromised 97 accounts across 79 organisations by leveraging adversary-in-the-middle relay attacks to capture and replay authentication tokens ^[7].
The uCreator Android spyware kit is being rented out to steal Telegram 2FA passwords and clone WeChat accounts by embedding itself in trojanised versions of the apps ^[6].
Dutch police arrested two individuals for conducting NFC relay attacks that drained over $400,000 from bank accounts, involving social engineering to trick victims into installing malicious apps and scanning credit cards ^[27].

Trends, Tools, or Tactics of Interest

Multiple headlines highlight the proliferation of RCE vulnerabilities, with attackers rapidly scanning for and exploiting new bugs such as PHP2Shell, Node2Shell, and others ^[3]^[28].
Attackers are leveraging malicious instruction files (e.g., AGENTS.md) placed in developer environments to hijack AI coding agents and install malicious npm packages ^[9]^[16].
New guidance from NIST, CISA, and NSA recommends treating incidents involving autonomous AI agents as standard security events, with a focus on tracking agent identity and authority ^[12].
Stolen reasoning traces from OpenAI models may facilitate the creation of cheaper rival AI systems, following a flaw in OpenAI’s compaction process ^[24].
Kali Linux 2026.3 was released, introducing six new security tools and desktop environment updates ^[14].
YARA-X 1.22.0 was released, delivering 11 improvements and 9 bugfixes ^[21].

Regulatory or Policy Developments

No significant regulatory or policy developments affecting the security industry were reported in the provided headlines.

Sources

Genesys Hack Exposes Customer Data From Internal Systems - securityweek.com
Patient records exposed in Quest breach: What you need to know - malwarebytes.com
953 Online Stores Infected in Long-Lasting Malware Campaign - securityweek.com
Chinese man extradited for role in $36 million cryptocurrency scam - bleepingcomputer.com
PHP2Shell security flaws now sucessfully exploited in the wild - bleepingcomputer.com
Industrial Vendors Check Products for PHP2Shell Vulnerabilities - securityweek.com
PHP2Shell Exploitation Moves From Probes to Working Shells - securityweek.com
Two Critical Wasmtime Flaws Could Let Malicious WebAssembly Modules Escape Sandboxes - thehackernews.com
Node2Shell: Brotli Flaw Triggers Patching Across Microsoft, Node.js, Python Packages - securityweek.com
Unpatched Tailscale SSH Flaws Could Let a Hacked Device Reach Root on Other Servers - thehackernews.com
Popcorn Time’s forgotten updater left millions of devices exposed to hijacking - malwarebytes.com
PHP2Shell Exploitation Attempts Continue Amid Suspected N. Korea Global Scanning Activity - thehackernews.com
Gheist Uses Stolen GitHub Tokens to Steal Private Repository Secrets via Actions Logs - thehackernews.com
Microsoft 365 Token-Replay Attacks Compromise 97 Accounts at 79 Organizations - thehackernews.com
uCreator Android Spyware Can Steal Telegram 2FA Passwords and Clone WeChat Accounts - thehackernews.com
Dutch Police Arrest Two Over NFC Relay Attacks That Drained $400,000+ From Bank Accounts - securityweek.com
⚡ Weekly Recap: This2Shell, That2Shell, Everything's an RCE? Rogue AI, Supply Chain Chaos and More - thehackernews.com
Malicious File in Downloads Folder Tries to Trick AI Coding Agent Into Installing Malware - thehackernews.com
AI coding agents hijacked using AGENTS.md file in Downloads folder - bleepingcomputer.com
When an AI Agent Is the Incident, the Identity Record Is the Evidence - bleepingcomputer.com
Stolen AI Reasoning Could Help China Build Cheaper Rivals - securityweek.com
Kali Linux 2026.3 released with 6 new tools, desktop updates - bleepingcomputer.com
YARA-X 1.22.0 Release, (Sun, Oct 25th) - isc.sans.edu

Cybersecurity Brief – 2026-05-20

Wed, 20 May 2026 00:00:00 +0000

Major Incidents or Breaches

GitHub confirmed that approximately 3,800 internal repositories were breached after an employee installed a malicious Visual Studio Code extension. The threat actor TeamPCP has claimed responsibility for accessing around 4,000 repositories containing private code, and GitHub is actively investigating the incident ^[6]^[12]^[14].
Grafana Labs disclosed a breach involving its source code repositories, attributed to a supply-chain attack via a compromised npm package (TanStack). The company stated that customer production systems and operations were not affected ^[5].
7-Eleven confirmed a data breach following a cyberattack claimed by the ShinyHunters extortion group. The incident affected the company’s systems last month ^[23].
NYC Health + Hospitals reported a significant breach via a third-party vendor compromise, exposing sensitive data including biometrics, medical diagnoses, and bank details of at least 1.8 million individuals ^[46].
The US FBI reported that Americans lost over $388 million to scams involving cryptocurrency ATMs in 2025 ^[18].

Newly Discovered Vulnerabilities

A critical, unauthenticated remote code execution vulnerability was disclosed in ChromaDB for AI applications. The flaw, present in the latest Python FastAPI version, allows attackers to hijack exposed servers ^[15]^[41].
Proof-of-concept exploit code was released for CVE-2026-31635 (“DirtyDecrypt”), a Linux kernel vulnerability allowing local privilege escalation to root. The issue was patched in April ^[8]^[45].
SEPPMail Secure E-Mail Gateway was found to have critical vulnerabilities that could enable remote code execution and interception of mail traffic ^[11].
Microsoft released mitigations for the “YellowKey” Windows BitLocker zero-day vulnerability, which allows attackers to gain access to protected drives ^[13].
Drupal announced an urgent core security release for all supported branches, addressing a highly critical vulnerability that may be exploited within hours or days of disclosure ^[10]^[38].

Notable Threat Actor Activity

The TeamPCP threat actor claimed responsibility for breaching thousands of GitHub internal repositories ^[6]^[14].
The ShinyHunters gang was confirmed to have breached 7-Eleven’s systems ^[23].
A new wave of Shai-Hulud malware resulted in the publication of over 600 malicious packages to the npm registry, continuing a supply-chain attack campaign ^[22].
Researchers observed a major phishing campaign abusing Google AppSheet to relay phishing emails, compromising over 30,000 Facebook accounts ^[3].
Attackers abused the Kuse AI app’s storage and sharing features to assist in phishing campaigns ^[1].
A phishing-as-a-service platform called EvilTokens bypassed MFA by leveraging OAuth consent, compromising over 340 Microsoft 365 organizations in five countries within five weeks ^[9].
A threat actor exploited Microsoft’s Self-Service Password Reset feature in attacks against Microsoft 365 and Azure environments to steal data ^[19].
Attackers are increasingly abusing the legacy Windows MSHTA utility to deliver malware stealthily via phishing and LOLBIN-based attacks ^[40].
The SHub Reaper stealer is targeting macOS users via fake WeChat and Miro installers, using Apple script-based execution for backdoor access ^[32].

Trends, Tools, or Tactics of Interest

Verizon’s 2026 Data Breach Investigations Report (DBIR) found that vulnerability exploitation has overtaken credential abuse as the primary breach vector, now accounting for 31 percent of initial breach access. The report highlights delays in patching and increased use of AI by attackers ^[29]^[37].
Microsoft disrupted a malware-signing-as-a-service operation, run by the Fox Tempest group, which abused the company’s Artifact Signing service to sign malware and ransomware as legitimate software ^[16]^[39].
A large-scale Android ad fraud operation, dubbed Trapdoor, used 455 apps to generate 659 million daily bid requests for fraudulent advertising ^[7].
B1ack’s Stash marketplace released 4.6 million stolen credit card records for free, reportedly in response to seller misconduct ^[42].
Discord rolled out end-to-end encryption on all voice and video calls by default ^[17].
YouTube introduced “likeness detection” to combat AI deepfakes, requiring creators to provide biometric data ^[48].

Regulatory or Policy Developments Affecting the Security Industry

The US “Take It Down Act” came into effect on May 19, requiring tech platforms to comply with takedown requests for nonconsensual intimate images, impacting how major platforms address privacy requests ^[35].
Interpol’s “Operation Ramz” involved 13 countries in the Middle East and North Africa, resulting in 201 arrests in the largest coordinated law enforcement cybercrime operation in the region to date ^[27]^[44].

Sources

GitHub Investigating TeamPCP Claimed Breach of ~4,000 Internal Repositories - thehackernews.com
GitHub confirms breach of 3,800 repos via malicious VSCode extension - bleepingcomputer.com
GitHub investigates internal repositories breach claimed by TeamPCP - bleepingcomputer.com
Grafana GitHub Breach Exposes Source Code via TanStack npm Attack - thehackernews.com
7-Eleven confirms data breach claimed by the ShinyHunters gang - bleepingcomputer.com
Biometrics, diagnoses, and bank details exposed in major healthcare breach - malwarebytes.com
FBI: Americans lost over $388 million to scams using crypto ATMs in 2025 - bleepingcomputer.com
Max-severity flaw in ChromaDB for AI apps allows server hijacking - bleepingcomputer.com
Unpatched ChromaDB Vulnerability Can Lead to Server Takeover - securityweek.com
DirtyDecrypt PoC Released for Linux Kernel CVE-2026-31635 LPE Vulnerability - thehackernews.com
PoC Released for DirtyDecrypt Linux Kernel Vulnerability - securityweek.com
SEPPMail Secure E-Mail Gateway Vulnerabilities Enable RCE and Mail Traffic Access - thehackernews.com
Microsoft shares mitigation for YellowKey Windows zero-day - bleepingcomputer.com
Drupal to Release Urgent Core Security Updates on May 20, Sites Told to Prepare - thehackernews.com
Drupal to Patch Highly Critical Vulnerability at Risk of Quick Exploitation - securityweek.com
New Shai-Hulud malware wave compromises 600 npm packages - bleepingcomputer.com
Phishing Campaign Exploits Google AppSheets to Target Facebook Accounts - blog.knowbe4.com
Warning: Phishing Attacks Are Abusing the Kuse AI App - blog.knowbe4.com
The New Phishing Click: How OAuth Consent Bypasses MFA - thehackernews.com
Microsoft Self-Service Password Reset abused in Azure data theft attacks - bleepingcomputer.com
Legacy Windows Tool MSHTA Fuels Surge in Silent Malware Attacks - securityweek.com
Stealer Spoofs Google, Microsoft & Apple, Then Backdoors macOS - darkreading.com
Verizon DBIR: Enterprises Face a Dangerous Vulnerability Glut - darkreading.com
Verizon DBIR 2026: Vulnerability Exploitation Overtakes Credential Theft as Top Breach Vector - securityweek.com
Cybercrime service disrupted for abusing Microsoft platform to sign malware - bleepingcomputer.com
Microsoft Disrupts Malware-Signing Service Run by ‘Fox Tempest’ - securityweek.com
Trapdoor Android Ad Fraud Scheme Hit 659 Million Daily Bid Requests Using 455 Apps - thehackernews.com
B1ack’s Stash Marketplace Gives Away 4.6 Million Stolen Credit Cards - securityweek.com
Discord rolls out end-to-end encryption on voice, video calls - bleepingcomputer.com
YouTube wants your face to fight deepfakes - malwarebytes.com
You Can Get Some of Your Nudes Removed From the Internet Under a New Law - wired.com
Interpol's 'Operation Ramz' Pioneers Cross-Region Collabs in Middle East - darkreading.com
201 Arrested in Crackdown on Cybercrime in Middle East, North Africa - securityweek.com

Cybersecurity Brief – 2025-12-19

Fri, 19 Dec 2025 00:00:00 +0000

Major Incidents or Breaches

The University of Sydney suffered a data breach after attackers accessed an online coding repository, resulting in the theft of files containing personal information of staff and students.
The Richmond Behavioral Health Authority (Virginia, US) experienced a ransomware attack, with threat actors stealing names, Social Security numbers, and financial and health information of 113,000 individuals.
French authorities arrested two crew members from an Italian passenger ferry for allegedly installing malware enabling remote control of the vessel. France’s counterespionage agency is investigating the incident as suspected foreign interference.
The US Department of Justice seized the E-Note cryptocurrency exchange, which was allegedly used to launder over $70 million in ransomware payments.

Newly Discovered Vulnerabilities

Hewlett Packard Enterprise (HPE) patched a critical vulnerability (CVE-2025-37164, CVSS 10.0) in OneView software allowing unauthenticated remote code execution.
SonicWall SMA1000 devices were found to be vulnerable to a zero-day flaw that has been exploited in the wild. Attackers chained this with a previously disclosed critical vulnerability to achieve remote code execution. SonicWall has released a patch.
A UEFI vulnerability affecting ASRock, Asus, Gigabyte, and MSI motherboards allows early-boot DMA attacks, exposing systems to compromise before the operating system loads.
CISA issued a warning regarding CVE-2025-59374, a supply chain backdoor in Asus Live Update, which has been exploited in the wild.
Microsoft confirmed that recent Windows updates have caused issues with Azure Virtual Desktop RemoteApp sessions and broke Message Queuing (MSMQ) functionality in Windows 11 and 10.
Automated password spraying attacks are targeting Cisco SSL VPN and Palo Alto Networks GlobalProtect VPN gateways.
A Chrome extension marketed for privacy was found to collect and exfiltrate users’ AI chat data after installation.

Notable Threat Actor Activity

The China-aligned APT group LongNosedGoblin was identified targeting governmental entities in Southeast Asia and Japan, using Windows Group Policy to deploy espionage malware across networks.
North Korea-linked threat actors, including Kimsuky, were responsible for at least $2.02 billion in global cryptocurrency theft in 2025. Kimsuky has also been observed distributing a new Android malware variant, DocSwap, via QR phishing campaigns impersonating Seoul-based delivery apps.
The Clop ransomware group is targeting Gladinet CentreStack file servers exposed to the internet, conducting data theft and extortion operations.
The Iranian APT group “Prince of Persia,” previously considered dormant, has been confirmed active, employing advanced operational security and cryptographic C2 communications to spy on dissidents.
WhatsApp account hijacking attacks using “GhostPairing” are ongoing, where attackers trick users into linking their accounts to attacker-controlled browsers via fake login prompts.
WeChat phishing attacks are increasing outside China, leveraging the platform’s wide functionality for social engineering.

Trends, Tools, or Tactics of Interest

AI-powered deepfake technologies are increasingly accessible, enabling realistic impersonation in video and audio, which is being leveraged for fraud and social engineering.
Ultra-realistic AI face-swapping platforms, such as “Haotian”, are being used to facilitate romance scams, with live video face swaps making detection difficult.
Attackers are refining credential-based attacks, evidenced by new password spraying campaigns against major VPN gateways.
There is a trend of exploiting supply chain vulnerabilities, as seen with the Asus Live Update backdoor.
The adoption of AI copilots and agents in SaaS applications is rising, increasing the attack surface and driving demand for dynamic AI-SaaS security measures.

Regulatory or Policy Developments Affecting the Security Industry

NIS2 compliance is placing increased emphasis on strong identity and access controls, with weak passwords and inadequate multi-factor authentication now considered compliance risks.
The US Immigration and Customs Enforcement (ICE) agency is seeking to expand its cybersecurity capabilities for enhanced internal monitoring and investigation of employees, reflecting a broader trend of increased internal surveillance in government agencies.