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Cyber security news, as it breaks.
Updated 121 stories in 24 hours
Microsoft, identity, cloud and the security operations centre.
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Most fromBleepingComputer, Help Net Security, CSO Online UK, Dark Reading
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A new Windows malware loader called AvisLoader uses encrypted peer-to-peer communications to make command-and-control infrastructure harder to disrupt. Varonis researchers explain how the malware uses ClickFix delivery, shortcut-based persistence, and remote command execution capabilities.
BleepingComputer
Microsoft has reminded customers that systems running Windows 11 23H2 Enterprise, Education, and IoT Enterprise editions will stop receiving security updates next month.
BleepingComputer
Microsoft-Decision-1 is a small decision-scoring model. Given a situation, a question and a fixed set of answer options, it returns a calibrated probability for each option. “This model is designed for routing, classification, prioritization, verification, and workflow control, making it easier to incorporate decision intelligence into existing applications, agents, and workflows in a secure, trusted…
Help Net Security
Microsoft is advising users and businesses to update Windows devices before digital certificates used to verify Windows Update servers expire in May and June 2027. The certificates expire on May 17 or June 19, depending on the Windows version. Devices without replacement certificates will lose access to Windows Update, including security fixes delivered through the…
Help Net Security
Online & Mobile tracking In 2020, noyb (in cooperation with the Norwegian Consumer Council) has filed a complaint against the online advertising company Xandr (now part of Microsoft) for processing personal data from the dating app Grindr. Now, the Norwegian Data Protection Authority has issued its decision – and fined Xandr € 8.5 million (NOK…
noyb
The US State Department is offering up to US $10 million for information about the whereabouts of Zhang Yu, a 44-year-old Chinese national who is accused of being a key figure in China’s state-sponsored hacking group, Hafnium. Hafnium (also known as Silk Typhoon) is widely believed to be the group that exploited zero day vulnerabilities…
Bitdefender
Threat actors have been observed exploiting two recently disclosed flaws in the AhsayCBS backup utility to seize control of affected devices and deploy web shells and XMRig cryptocurrency miners. Details of the flaws are below – CVE-2026-105133 (CVSS v4 score: 5.5) – An improper authentication vulnerability in the checkSysPwd() function in the “com/ahsay/obs/api/ApiStructsAction.java”
The Hacker News
Microsoft says devices running unsupported versions of Windows will stop receiving security updates after next year’s Windows Update certificate rotation.
BleepingComputer
The half-yearly update to the Windows operating system gets a host of features for running AI models locally and securely…
Computer Weekly
September 2026 Patch Tuesday set an all-time record with 973 CVEs addressed across the Microsoft portfolio. We’re only four months into the Patch Apocalypse and everyone seems to be numb with respect to the insane number of CVEs reported. Despite this massive number, only two, CVE-2026-85880 and CVE-2026-81963, were reported Known Exploited and none were…
Help Net Security
Prepare for post-quantum authentication by testing certificate ecosystems now. Learn how Microsoft’s PQC TLS Pilot Program helps advance future readiness.
Microsoft
Microsoft will soon introduce support for third-party deepfake detection solutions and impersonation protection in Teams meetings.
BleepingComputer