Aperçu du paysage des menaces au premier semestre 2026, le ESET Threat Report se base sur la télémétrie ESET et les analyses de ses experts en détection et en recherche sur les menaces.

A threat actor is selling employee databases allegedly stolen from the Microsoft Azure infrastructure of multiple Fortune 500 companies after gaining access using compromised credentials. [...]

Pokémon Center is notifying customers in the United Kingdom and Germany that it suffered a third-party data breach after hackers stole customer personal and order information from third-party logistics provider CEVA Logistics. [...]

GitHub is down for some users as a widespread outage is causing errors across the website, API, Actions, Pull Requests, and several other services. [...]

CVE-2026-54121 lets a standard domain user turn your Enterprise CA into a Domain Controller. The patch is the easy part. The lesson is standing privilege, implicit trust, and treating PKI as the Tier 0 identity infrastructure it has always been. [...]

Microsoft has reminded IT administrators that Windows Server 2022 is rapidly approaching its mainstream end date of October 2026, when it will switch to extended support. [...]

Tech giants General Electric (GE) and Philips have also confirmed they're investigating claims that the Clop ransomware gang breached their systems and stole data. [...]

The French Ministry of the Economy and Finance has disclosed a data breach after an attacker accessed the General Directorate of Public Finances (DGFiP) systems and stole data belonging to 678,000 individuals. [...]

Microsoft is working on a security patch for the "ShieldBreak" zero-day vulnerability disclosed last week by security researcher "Nightmare Eclipse" and now tracked as CVE-2026-69414. [...]

Cryptocurrency hardware wallet provider SafePal is warning of a data breach affecting about 39,798 customers after a flaw was exploited to steal customer order information, and a threat actor is now claiming to be selling the stolen data. [...]

Claude is experiencing a major outage, with users reporting login problems and degraded performance across several Anthropic services. [...]

Multiple distributed denial-of-service (DDoS) attacks targeted the Threema secure messaging service earlier this week, causing severe disruptions to communications. [...]

A new information-stealing malware called AmnesiaStealer, which targets macOS users via ClickFix attacks, includes a streaming module that allows the attacker to interactively control the victim's web browser. [...]

A new Mirai-based modular Linux botnet malware called Evooo1Bot has been targeting internet-facing gateway devices, turning them into SOCKS5 traffic relay nodes. [...]

It could soon become easier to identify AI-generated content, even if it's not the usual "It's Not X, it's Y" type of post you'd come across on LinkedIn and other socials. [...]

Four cybercriminals were arrested in Brazil, and three others were charged in Europe over allegations that they exploited a vulnerability at a service provider, allowing them to withdraw funds from Commerzbank customers' bank accounts. [...]

Attempts to exploit a critical vulnerability (CVE-2026-71362) in Adobe's Commerce and Magento e-commerce platforms have been detected, potentially allowing attackers to hijack customer accounts. [...]

More than 737 browser extensions published on the Chrome Web Store impersonated well-known VPN and proxy services while routing users' traffic through SOCKS5 proxies operated by a single provider. [...]

Security researchers have disclosed new "Plug and Pwn" attacks that abuse the Windows Plug and Play feature to trigger Windows into installing vulnerable or insecure vendor software and gain SYSTEM privileges. [...]