06-Oct-2026 Denmark Data Breach, IQVIA Fine, HFS Exploits and Linux Backdoors

Hacked dAily is the first AI-driven cybersecurity podcast, created by Cytadel Cyber and published daily for CISOs, security leaders, and decision-makers. Today’s episode covers five key developments: 1. **Denmark’s population register exposure:** Unauthorized parties accessed the names, addresses, and personal identification numbers of approximately 8.8 million people through a private company’s legitimate register access. Authorities have suspended access and begun investigations, while warning of potential fraud, identity theft, and further misuse of the data. 2. **IQVIA privacy penalty:** IQVIA was fined $78 million after regulators found that sensitive health data had not been properly anonymized. The case highlights the financial, legal, and reputational consequences of weak data governance as scrutiny of medical information intensifies. 3. **Rejetto HFS exploitation:** Attackers are actively exploiting a critical vulnerability in the Rejetto HFS file-sharing server that can enable remote code execution. Organizations using exposed systems face potential takeover and data theft, reinforcing the need to patch quickly and reduce internet-facing exposure. 4. **Unavailable security story:** The supplied material contained only a security verification notice, so no reliable news details were available for this segment. 5. **Linux backdoors target SMTP servers:** Researchers have uncovered backdoors targeting internet-facing Linux mail systems, raising concerns about stealthy access and persistence. A successful compromise could enable email interception, lateral movement, or wider network intrusion, making hardening and monitoring essential. Hacked Daily is sponsored by Cytadel, an offensive cyber assurance company specialising in AI-powered attacks. Cytadel’s expert-led Red Team Assessments follow real attack chains across people, identity and technology to verify whether they can become AI fraud or ransomware disruption. We verify your defences before attackers do. Learn more at cytadel.co.uk.