Here are the latest high-level headlines in computer security right now:
- US and UK authorities warn about zero-day and supply-chain risks; organizations are accelerating patching and tightening endpoint security after notable breaches in the past weeks. This follows ongoing attention to critical vulnerabilities exploited by ransomware groups and state-backed actors.[2][4]
- Ransomware activity remains active with new extortion methods and leak sites, including reports of breaches at major vendors and public disclosures of internal tools used by attackers. Organizations are urged to review backup strategies and incident response playbooks.[3][6]
- Critical vulnerabilities in enterprise firewall and cloud security products continue to surface, prompting rapid vendor advisories and emergency mitigations. Security teams are advised to monitor CVE disclosures and apply vendor patches promptly.[5][3]
- Industrial control systems (ICS) and operational technology (OT) attack research highlights evolving threats targeting Modbus and related protocols, signaling growing convergence between IT security and OT risk management.[1]
- Security news outlets report investigations into state-sponsored activities and cybercrime groups expanding their toolkits, including EDR evasion techniques and data exfiltration methods.[1][5]
If you’d like, I can tailor this to your region (São Paulo, Brazil) and provide a quick brief on what to watch for local organizations, plus practical steps you can take this week to improve your security posture. I can also pull more details on any specific story you’re interested in.[4][2]
Sources
By Bill Goodwin NCSC’s Share and Defend scheme has seen BT block over a billion clicks through to malicious websites 24 Apr 2026 … ### Cisa tells US organisations to harden endpoint management after Stryker attack By Alex Scroxton Last week’s cyber attack on the systems of a US medical services company by Iranian hacktivists has prompted an alert from Cisa, urging organisations to reinforce their defensive posture 19 Mar 2026
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www.computerworld.comBy Arielle Waldman VMware ESXi has proven to be a popular target for ransomware threat actors and a challenge for enterprises to patch. 30 Jul 2024 … ### North Korean cyber APT targeting nuclear secrets By Alex Scroxton Mandiant has upgraded the North Korean threat actor known as Andariel to APT status and warned of coordinated efforts to steal western military IP, including nuclear secrets 25 Jul 2024 … ### Dragos: New ICS malware FrostyGoop abuses Modbus By Alexander Culafi Dragos published...
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