Search: “ncsc”

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CategoryAll Threat actor 9 Policy & legal 5 Advisory 4 Vulnerability 4 Malware 3 AI safety & security 3 Exploit / PoC 2 Data breach 2 Industry 2 Research 2 Ransomware 1

SeverityAll critical 1 high 17 medium 4 low 0 info 15

Disruptive cyber activity highlights risk from internet-exposed systems and edge devices

NCSC links disruptive cyber activity to internet-exposed systems and edge devices, urging OT owners to fix avoidable vulnerabilities and improve resilience.

The UK's NCSC issued guidance following disruptive cyber activity that highlights the risk to internet-exposed systems and edge devices. It encourages owners of operational technology to remediate avoidable vulnerabilities and invest in long-term cyber resilience. The notice underscores that exposed edge devices remain a common entry point for attackers against OT environments.

NCSC UKAug 27, 12:00 UTC · 20d agoAdvisory in the wild

Risky Bulletin: Expired cards can be used for new transactions

Researchers show expired Visa contactless cards can be revived via NFC man-in-the-middle relay to run fraudulent transactions; roundup also covers major breaches.

University of Massachusetts Amherst researchers built an NFC man-in-the-middle rig that updates a card's expiration date in transit and relays the modified payment to POS terminals, reviving expired contactless cards; Visa terminals and the backends of all five banks studied failed to catch the manipulation. The same roundup reports Iranian hackers shut down a small UK power plant for four days, Lazarus breached South Korea's Presidential Office as part of a campaign exceeding 100 victims, and French telecom SFR suffered a breach affecting over 2.1 million customers.

Risky Business NewsAug 24, 04:40 UTC · 24d agoResearch1

Suspected Iran-linked attack knocked UK power plant offline for days

Suspected Iranian hackers knocked a small UK power plant offline for four days in July 2026, with no noticeable impact on the national grid.

Sources told The Telegraph that a British power plant was offline for four days in July 2026 following a suspected Iranian cyberattack, reported to the National Cyber Security Centre. The UK energy minister said the incident affected a small-scale energy generator with no noticeable effect on the power supply, and energy CEOs were briefed and given further advice afterward. The attack followed warnings about Iranian cyber activity against US energy, water, and government networks, including a coordinated attack on 30+ US community water utilities.

Help Net SecurityAug 24, 00:00 UTC · 24d agoThreat actor

Week in review: Records allegedly stolen from Azure tenants, Medusa ransomware hits 500+ orgs

Week in review: Medusa ransomware hit 500+ orgs per CISA, millions of Azure tenant records allegedly stolen, SafePal and French tax authority breaches disclosed.

Help Net Security's weekly roundup covers the FBI, CISA, and HHS joint advisory update reporting Medusa ransomware has breached more than 500 organizations since June 2021, and threat actor TheHatman's claim of millions of employee records stolen from Azure tenants of Fortune 500 firms including McDonald's, Vodafone, Kyndryl, and Tata Consultancy Services, per Hudson Rock. It also covers the SafePal breach affecting 39,798 customers, France's DGFiP breach exposing data on 678,000 individuals, and UT San delaying its fall semester after a cyberattack. Security items include critical unauthenticated GitLab flaw CVE-2026-19478, an actively exploited patched macOS Screen Sharing flaw deploying a cryptominer, US charges against 17 Mabna Institute Iranian hackers over 31TB of stolen academic data, and Google Mandiant's AI agents finding 100+ high-severity vulnerabilities.

Help Net SecurityAug 23, 00:00 UTC · 25d agoData breach in the wildCVE-2026-19478