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Netherlands: Citrix Netscaler flaw CVE-2025-6543 exploited to breach orgs

The Netherlands' National Cyber Security Centre (NCSC) is warning that a critical Citrix NetScaler vulnerability tracked as CVE-2025-6543 was exploited to breach "critical organizations" in the country. The critical flaw is a memory overflow bug that allows unintended control flow or a denial of service state on impacted devices. "Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual

UK ties GRU to stealthy Microsoft 365 credential-stealing malware

The UK National Cyber Security Centre (NCSC) has formally attributed ‘Authentic Antics’ espionage malware attacks to APT28 (Fancy Bear), a threat actor already linked to Russia’s military intelligence service (GRU). The NCSC revealed in a detailed technical analysis of the Authentic Antics malware dated May 6th that it is stealing credentials and OAuth 2.0 tokens that allow access to a target's email account. The malware was observed in use in 2023 and runs inside the Outlook process and produ

UK launches vulnerability research program for external experts

UK's National Cyber Security Centre (NCSC) has announced a new Vulnerability Research Initiative (VRI) that aims to strengthen relations with external cybersecurity experts. The agency already conducts internal vulnerability research on a wide range of technologies and will continue to do so. However, the launch of VRI will create a parallel program designed to improve discovery and sharing of critical insights with the community more expeditiously. The NCSC is the UK's cybersecurity authority