Les chercheurs en cybersécurité de l’entreprise KOI mettent en lumière un vaste et sournois réseau de revente de données. Ce système repose sur plusieurs extensions de navigateur, téléchargées des millions de fois et arborant les certifications les plus prestigieuses.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical flaw impacting ASUS Live Update to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerability, tracked as CVE-2025-59374 (CVSS score: 9.3), has been described as an "embedded malicious code vulnerability" introduced by means of a supply chain compromise

Cisco has alerted users to a maximum-severity zero-day flaw in Cisco AsyncOS software that has been actively exploited by a China-nexus advanced persistent threat (APT) actor codenamed UAT-9686 in attacks targeting Cisco Secure Email Gateway and Cisco Secure Email and Web Manager. The networking equipment major said it became aware of the intrusion campaign on December 10, 2025, and that it

SonicWall has rolled out fixes to address a security flaw in Secure Mobile Access (SMA) 100 series appliances that it said has been actively exploited in the wild. The vulnerability, tracked as CVE-2025-40602 (CVSS score: 6.6), concerns a case of local privilege escalation that arises as a result of insufficient authorization in the appliance management console (AMC). It affects the following

A new distributed denial-of-service (DDoS) botnet known as Kimwolf has enlisted a massive army of no less than 1.8 million infected devices comprising Android-based TVs, set-top boxes, and tablets, and may be associated with another botnet known as AISURU, according to findings from QiAnXin XLab. "Kimwolf is a botnet compiled using the NDK [Native Development Kit]," the company said in a report

The Zeroday Cloud hacking competition in London has awarded researchers $320,000 for demonstrating critical remote code execution vulnerabilities in components used in cloud infrastructure. [...]

French authorities arrested a 22-year-old suspect on Tuesday for a cyberattack that targeted France's Ministry of the Interior earlier this month. [...]

Amazon's AWS GuardDuty security team is warning of an ongoing crypto-mining campaign that targets its Elastic Compute Cloud (EC2) and Elastic Container Service (ECS) using compromised credentials for Identity and Access Management (IAM). [...]

Threat actors are abusing the legitimate device-linking feature to hijack WhatsApp accounts via pairing codes in a campaign dubbed GhostPairing. [...]

​Cisco warned customers today of an unpatched, maximum-severity Cisco AsyncOS zero-day actively exploited in attacks targeting Secure Email Gateway (SEG) and Secure Email and Web Manager (SEWM) appliances. [...]

SonicWall warned customers today to patch a vulnerability in the SonicWall SMA1000 Appliance Management Console (AMC) that was chained in zero-day attacks to escalate privileges. [...]

The Russian state-sponsored threat actor known as APT28 has been attributed to what has been described as a "sustained" credential-harvesting campaign targeting users of UKR[.]net, a webmail and news service popular in Ukraine. The activity, observed by Recorded Future's Insikt Group between June 2024 and April 2025, builds upon prior findings from the cybersecurity company in May 2024 that

The threat actor linked to Operation ForumTroll has been attributed to a fresh set of phishing attacks targeting individuals within Russia, according to Kaspersky. The Russian cybersecurity vendor said it detected the new activity in October 2025. The origins of the threat actor are presently unknown. "While the spring cyberattacks focused on organizations, the fall campaign honed in on

A ransomware gang exploited the critical React2Shell vulnerability (CVE-2025-55182) to gain initial access to corporate networks and deployed the file-encrypting malware less than a minute later. [...]

Lorsqu’une faille de sécurité est découverte au sein d’un système d’information (SI), la réaction est souvent la même : chercher une cause purement technique comme un bug, une mauvaise configuration ou un logiciel vulnérable. Pourtant, les failles (pour la majorité) ne naissent pas d’un incident isolé, mais plutôt d’un enchaînement de décisions humaines, de mouvements […]

The post Comment se créent les failles au sein d’un système d’informations ? first appeared on UnderNews.

L’équipe ASERT de NETSCOUT a récemment analysé comment la Threat Intelligence peut contribuer à neutraliser l’efficacité d’une campagne d’attaques DDoS. Le cas de MegaMedusa démontre concrètement l’importance du partage de la Threat Intelligence dans la cybersécurité. Tribune – Plus précisément, lorsque des informations open source identifiant l’infrastructure proxy de RipperSec ont été rendues publiques en […]

The post Attaque DDoS MegaMedusa : éclairage technique NETSCOUT first appeared on UnderNews.

Mimecast, leader mondial de la cybersécurité qui redéfinit la manière dont les organisations sécurisent les risques humains, annonce ses prédictions en matière de menaces cyber pour l’année 2026. L’année prochaine sera sans conteste celle de la ruée vers l’or… L’or olympique bien sûr, mais aussi les montagnes d’or sur lesquelles sont assis les hyperscalers et […]

The post Cybersécurité 2026 : les organisations sous la pression des Jeux et de l’IA first appeared on UnderNews.

Une décennie de complexité Zero Trust enfin simplifiée grâce à une approche unifiée conçue pour les MSP et les organisations de toutes tailles. Tribune – WatchGuard® Technologies, leader mondial de la cybersécurité unifiée, annonce la sortie d’un Bundle Zero Trust WatchGuard – une solution rationalisée qui rend enfin le Zero Trust accessible aux organisations de […]

The post WatchGuard propose une voie simple vers une sécurité Zero Trust moderne first appeared on UnderNews.

Passwords and app-based MFA add hidden costs through lost productivity, frequent resets, and risk of phishing and social engineering attacks. Token explains how wireless biometric, passwordless authentication eliminates credential-based attacks and delivers measurable financial returns by reducing login time across the enterprise. [...]