Cybersecurity Brief – 2025-12-18

Thu, 18 Dec 2025 00:00:00 +0000

Major Incidents or Breaches

LKQ, a major auto parts supplier, confirmed a breach involving its Oracle E-Business Suite (EBS), resulting in the compromise of personal information for thousands of individuals.
France arrested a 22-year-old suspect linked to the recent cyberattack on the country’s Ministry of the Interior.
Amazon AWS GuardDuty reported an ongoing cryptomining campaign abusing compromised AWS credentials to hijack EC2 and ECS resources across multiple customer environments.
WhatsApp accounts are being hijacked via abuse of the device-linking feature in attacks dubbed “GhostPairing,” allowing threat actors to take over user accounts.
The NMFTA (National Motor Freight Traffic Association) warned of a surge in sophisticated cyber-enabled cargo theft targeting the transportation sector.

Newly Discovered Vulnerabilities

Cisco disclosed a maximum-severity zero-day vulnerability (CVE-2025-20393) in AsyncOS used by Secure Email Gateway (SEG) and Secure Email and Web Manager (SEWM) appliances, with active exploitation by a China-linked APT (UAT-9686/Jewelbug).
SonicWall released fixes for CVE-2025-40602 affecting SMA 100 series appliances, which had been actively exploited. A separate zero-day in SMA 1000 Appliance Management Console was also reported as exploited in privilege escalation attacks.
A critical flaw in ASUS Live Update was added to CISA’s Known Exploited Vulnerabilities catalog due to evidence of exploitation in the wild.
Critical vulnerabilities in Fortinet devices are under active attack, with attackers targeting admin accounts, exporting device configurations, and accessing sensitive data.
The React2Shell vulnerability (CVE-2025-55182) is being actively exploited by ransomware groups for rapid initial access and deployment of file-encrypting malware.
Google patched two critical Chrome browser vulnerabilities that could be exploited remotely simply by visiting a malicious website.

Notable Threat Actor Activity

The ForumTroll APT group continues targeted phishing attacks against Russian political scientists and scholars, delivering the Tuoni framework via fake eLibrary emails and malicious plagiarism reports.
Russian state-sponsored APT28 is conducting a sustained credential-harvesting campaign targeting users of the Ukrainian webmail/news portal UKR[.]net.
The China-linked threat actor Jewelbug (also referred to as Ink Dragon) has increased targeting of European government entities since July 2025, using ShadowPad and FINALDRAFT malware, while continuing attacks in Southeast Asia and South America.
The Kimwolf botnet has hijacked at least 1.8 million Android-based TVs, set-top boxes, and tablets, leveraging them for large-scale distributed denial-of-service (DDoS) attacks.
A new campaign, GhostPoster, embedded malware in 17 Firefox add-ons (over 50,000 downloads), hijacking affiliate links, injecting tracking code, and bypassing security controls.
The Cellik Android RAT, available for $150, is being used to remotely control victim devices and generate trojanized apps distributed via the Google Play Store.

Trends, Tools, or Tactics of Interest

Attackers are increasingly abusing legitimate features (e.g., WhatsApp device-linking, AWS IAM credentials) for account hijacking and cryptomining.
Ransomware groups are exploiting critical vulnerabilities (e.g., React2Shell) for rapid deployment of file-encrypting malware.
Malicious browser extensions (e.g., GhostPoster in Firefox) continue to be a vector for affiliate fraud, tracking, and security bypass.
The use of ShadowPad and FINALDRAFT malware by China-linked actors against government targets highlights continued investment in modular, stealthy toolsets.
Surge in cyber-enabled cargo theft demonstrates growing convergence of physical and cybercrime in logistics and transportation sectors.

Regulatory or Policy Developments

Mexico officially launched its first National Cybersecurity Plan, establishing a national framework for digital resilience and cybersecurity policy.
Microsoft announced plans to deprecate the RC4 encryption cipher, historically exploited for administrative authentication attacks in Windows environments.

Cybersecurity Brief – 2025-12-17

Wed, 17 Dec 2025 00:00:00 +0000

Major Incidents or Breaches

Petróleos de Venezuela (PDVSA), Venezuela’s state-owned oil company, suffered a cyberattack that disrupted export operations over the weekend.
SoundCloud disclosed a data breach affecting approximately 20% of its users, with attackers accessing user data.
Askul, an e-commerce and logistics company, was targeted by the RansomHouse ransomware group in October, resulting in the compromise of 700,000 records.
A new report highlights that most “parked” domains-largely expired or unused domains-now serve malicious content, increasing risks from direct navigation.
Urban VPN Proxy, a popular Chrome extension with 8 million users, was found to be harvesting data from AI chatbot conversations, including ChatGPT, Claude, Gemini, and Copilot.
A security flaw at a photo booth operator’s website exposed hundreds of private customer photos online.

Newly Discovered Vulnerabilities

Two critical authentication bypass vulnerabilities in Fortinet FortiGate devices are under active exploitation, enabling unauthorised access to admin accounts and theft of configuration files.
The React2Shell vulnerability is being actively exploited to deploy Linux backdoors such as KSwapDoor and ZnDoor.
A vulnerability in JumpCloud Remote Assist allows attackers to write arbitrary data or delete files to gain System privileges.
Kaspersky researchers detailed a vulnerability in a vehicle’s head unit modem, which allowed full system access.
A malicious NuGet package, typosquatting the legitimate Tracer.Fody .NET library, was discovered stealing cryptocurrency wallet data.

Notable Threat Actor Activity

Amazon’s threat intelligence team reported a years-long Russian GRU campaign targeting Western critical infrastructure, particularly in the energy and cloud sectors, from 2021 to 2025. The campaign has shifted from exploiting vulnerabilities to leveraging misconfigured edge devices.
The Ink Dragon espionage group (also known as CL-STA-0049, Earth Alux) was profiled for its sustained and sophisticated offensive operations, including the use of relay networks.
An ongoing campaign is targeting AWS customers with compromised IAM credentials to conduct large-scale cryptocurrency mining.
The ‘GhostPoster’ campaign is distributing malicious Firefox extensions that hide JavaScript in addon logos to monitor activity and deploy backdoors, with over 50,000 downloads.
Cellik, a new Android malware-as-a-service (MaaS), is being marketed on underground forums with capabilities to embed in any app and build malicious versions from Google Play apps.
A phishing campaign targeting executives is using phony award offers to harvest credentials.
European law enforcement dismantled a Ukrainian call center fraud ring responsible for over €10 million in losses across Europe.

Trends, Tools, or Tactics of Interest

Ransomware groups are increasingly targeting hypervisors to encrypt multiple virtual machines simultaneously.
There is a surge in Android mobile adware and malware, particularly Triada and MobiDash, in late 2025.
Threat actors are increasingly exploiting third-party risks introduced by rapid adoption of open source and AI-powered coding assistants.
The majority of parked domains now serve malicious content, making direct navigation to such domains riskier.
Fortinet FortiGate vulnerabilities are being exploited within a week of public disclosure, indicating rapid weaponisation of new flaws.
AI-assisted coding platforms are accelerating software development, increasing the attack surface and third-party risks.
KnowBe4 released deepfake training modules to help organisations combat AI-driven threats.
Microsoft announced it will block Exchange Online access for mobile devices running outdated email software.
Amazon observed Russian state actors shifting tactics from exploiting vulnerabilities to abusing misconfigured infrastructure in critical sectors.

Regulatory or Policy Developments Affecting the Security Industry

The Texas Attorney General filed lawsuits against five major TV manufacturers, alleging illegal collection and sale of user viewing data without consent via Automated Content Recognition.
Afripol is intensifying regional cooperation to address cybercrime challenges amid rapid digitisation and increased cybercriminal activity in Africa.
Google announced it will discontinue its dark web monitoring report in early 2026.

Cellik on DanSec Daily

Cybersecurity Brief – 2025-12-18

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments

Cybersecurity Brief – 2025-12-17

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments Affecting the Security Industry