A malicious campaign exploiting Google Groups to distribute Lumma Stealer and Ninja Browser malware has been uncovered. The attackers infiltrate industry-related forums, posting seemingly legitimate technical discussions with embedded malicious download links. For Windows users, the payload is Lumma Stealer, a credential-harvesting malware. Linux users are directed to download a trojanized Chromium-based browser called Ninja Browser, which installs malicious extensions and persistence mechanisms. The campaign utilizes Google's trusted ecosystem to bypass security measures and increase user confidence. Over 4,000 malicious Google Groups and 3,500 Google-hosted URLs have been identified in this global operation, posing significant risks to organizations including credential theft, account takeover, and remote command execution.
In 2022 (time flies!), I wrote a diary about the 32-bits VS.64-bits malware landscape[1]. It demonstrated that, despite the growing number of 64-bits computers, the "old-architecture" remained the standard. In the SANS malware reversing training (FOR610[2]), we quickly cover the main differences between the two architectures. One of the conclusions is that 32-bits code is still popular because it acts like a comme denominator and allows threat actors to target more Windows computers. Yes, Microsoft Windows can smoothly execute 32-bits code on 64-bits computers. It is still the case in 2026? Did the situation evolved?
The KRVTZ-NET IDS alerts dated February 16, 2026, indicate network reconnaissance activity detected by intrusion detection systems and reported via the CIRCL OSINT feed. The activity involves network traffic from IP address 43.130.26.3, characterized by unusual User-Agent strings labeled as "_TEST_", suggesting automated scanning or probing. This reconnaissance is an early phase in the cyber kill chain, aimed at gathering information rather than exploiting vulnerabilities. No specific affected products, CVEs, or patches are associated with this alert, and no known exploits are in the wild. The threat is classified as low severity due to the absence of direct exploitation or immediate compromise. However, such reconnaissance can precede more advanced attacks, making detection and monitoring crucial. The alert is primarily relevant to organizations with internet-facing assets, especially in Europe, where the IP origin and historical patterns suggest higher scanning likelihood.
The KRVTZ-NET IDS alerts from February 15, 2026, report ongoing reconnaissance activity targeting Fortinet FortiOS VPN devices via repeated GET requests to the /remote/logincheck endpoint. This activity is linked to CVE-2023-27997, a vulnerability that allows unauthenticated attackers to probe VPN login endpoints remotely. While no active exploits or ransomware campaigns are currently tied to these alerts, the scanning indicates attackers are gathering information for potential future exploitation. The immediate severity is low, but unpatched vulnerabilities could lead to unauthorized access or denial of service. Organizations, particularly in Europe where Fortinet VPNs are prevalent, should prioritize patching and hardening VPN infrastructure to mitigate risk.
With more than 37 million combined downloads, the extensions expose users to tracking and personal information theft. The post Over 300 Malicious Chrome Extensions Caught Leaking or Stealing User Data appeared first on SecurityWeek .
Hackers stole personal information such as names, addresses, and phone numbers from a customer contact system. The post Dutch Carrier Odido Discloses Data Breach Impacting 6 Million appeared first on SecurityWeek .
Netskope Threat Labs has identified multiple phishing campaigns exploiting video conference invitations from Zoom, Microsoft Teams, and Google Meet. The attackers use fake meeting invites to trick users into downloading malicious payloads disguised as software updates. These payloads are actually legitimate, digitally signed remote monitoring and management (RMM) tools like Datto RMM, LogMeIn, or ScreenConnect. By leveraging these tools, attackers gain administrative remote access to victims' machines, potentially leading to data theft or further malware deployment. The campaigns use convincing phishing pages that mimic legitimate video conferencing platforms, exploiting users' urgency to join scheduled calls. This sophisticated approach allows attackers to bypass traditional security measures and establish a persistent foothold in corporate networks.
Rewards for exploits are reportedly much smaller than in the contest’s glory days. The post China Revives Tianfu Cup Hacking Contest Under Increased Secrecy appeared first on SecurityWeek .
Developers must view AI as a collaborator to be closely monitored, rather than an autonomous entity to be unleashed. Without such a mindset, crippling tech debt is inevitable. The post How to Eliminate the Technical Debt of Insecure AI-Assisted Software Development appeared first on SecurityWeek .
LockBit 5.0, the latest version of the notorious ransomware, has been released with support for Windows, Linux, and ESXi systems. This update brings improved defense evasion, faster encryption, and enhanced modularity. The Windows variant employs extensive anti-analysis techniques, while Linux and ESXi versions remain unpacked. All variants share a common encryption scheme using XChaCha20 and Curve25519. LockBit 5.0 demonstrates a focus on enterprise and infrastructure targets, including explicit support for Proxmox virtualization. The group's data leak site reveals a primary focus on the U.S.business sector, with victims spanning various industries. LockBit's infrastructure has shown connections to SmokeLoader, suggesting possible cooperation or infrastructure reuse among malware operators.
The company says hackers stole the personal information of patients of affiliated physicians and practices. The post ApolloMD Data Breach Impacts 626,000 Individuals appeared first on SecurityWeek .
Windows will have runtime safeguards enabled by default, ensuring that only properly signed software runs. The post Microsoft to Enable ‘Windows Baseline Security’ With New Runtime Integrity Safeguards appeared first on SecurityWeek .
Threat actors from Russia, China, North Korea and Iran have been observed launching attacks. The post Hacktivists, State Actors, Cybercriminals Target Global Defense Industry, Google Warns appeared first on SecurityWeek .
