The ShinyHunters extortion group has claimed the theft of 284 million records from the company’s systems. The post McKesson Confirms Data Breach as Attacker Deadline Looms appeared first on SecurityWeek.

Security teams must treat autonomous agents as highly privileged identities. The post What the Hugging Face Incident Teaches Security Leaders About AI Agent Access appeared first on SecurityWeek.

The threat actor known as Silver Fox has been observed distributing the ValleyRAT backdoor disguised as a signed Chinese adware application, running the malware under a trusted process to slip past users who add such software to their antivirus exclusions. Russian cybersecurity vendor Kaspersky said the attackers built the disguise around QN Wallpaper, a genuine Chinese desktop-wallpaper tool

The AI giant is logging customers out of their accounts and removing payment data to prevent unauthorized Claude usage. The post Anthropic Warns Claude Users of Infostealer Malware Infections appeared first on SecurityWeek.

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.   CVE-2026-81578 PaperCut NG/MF Missing Authentication for Critical Function Vulnerability  CVE-2026-82078 PaperCut NG/MF Unsafe Reflection Vulnerability  These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.  Binding Operational Directive (BOD) 26-04: Prioritizing Securit

Threat actors associated with Aurora (aka Aur0ra) ransomware have been observed using SpaceX's artificial intelligence (AI)-powered coding assistant Cursor to break into target networks, according to findings from CloudSEK and Gambit Security. The two independent analyses are based on exposed infrastructure associated with the Russian-speaking cybercrime group, leading to the discovery of its

Claude Code reads files, runs shell commands, invokes MCP tools, and acts through the credentials available on a developer’s machine. Anthropic’s new Compliance API endpoints give security teams their clearest view yet into that activity. They also expose a larger problem: activity logs alone cannot tell you whether an agent’s access is legitimate. AI has moved from the browser tab to the

Named KindaRails2Shell, the arbitrary file read flaw allows attackers to extract secrets and execute arbitrary code remotely. The post Critical Ruby on Rails Vulnerability in Attackers’ Crosshairs appeared first on SecurityWeek.

The company has called in CrowdStrike and others to investigate the attack that caused global network disruption. The post Boston Scientific Still Recovering From Cyberattack appeared first on SecurityWeek.

FulcrumSec says it stole over 80 GB of data from Manchester Airports Group and plans to leak it online. The post Extortion Group Claims Manchester Airports Group Data Breach appeared first on SecurityWeek.

Microsoft has confirmed that mouse settings are being reverted on Windows 11 systems after installing the KB5120998 August 2026 non-security preview update. [...]

Two Nigerian men extradited to the U.S. on Thursday have been charged with involvement in sextortion schemes that resulted in the deaths of two minor victims in Mississippi and North Carolina. [...]

A federal judge has ruled in favor of artificial intelligence company Anthropic in its legal battle against the Pentagon after the government labeled the company as a supply chain risk earlier this year. U.S. District Judge Rita Lin issued a written order Thursday night that the Pentagon acted illegally by punishing the AI company for […] The post Judge Says Pentagon’s Measures Against Anthropic Were ‘Illegal and Baseless’ appeared first on SecurityWeek.

A China-nexus cyber espionage actor tracked as Fire Ant has expanded a long-running campaign beyond VMware hypervisors to compromise Cisco IOS XR routers, Terminal Access Controller Access-Control System (TACACS) servers, and Linux management hosts used to route, authenticate, and manage high-value networks. Sygnia, the incident response firm that investigated the intrusion, said the actor

The Rhysida ransomware group has claimed the exfiltration of over 5TB of data, including personal information and credentials. The post Berlin Won’t Pay Extortion Group Claiming Data Theft appeared first on SecurityWeek.

Microsoft asked customers this week to ignore incorrect alerts that Defender Antivirus has been turned off after installing the latest Defender updates. [...]

The U.S. Department of Justice (DoJ) on Friday corrected a previously issued press statement that several of its agencies were victims of attacks carried out by Chinese threat actors, instead now pointing out that they were among those targeted. Last week, the DoJ said the National Aeronautics and Space Administration, Federal Reserve, Department of Energy, Department of Justice, Department

PaperCut has released a second emergency patch for the exploited vulnerabilities, which are now tracked as CVE-2026-82078 and CVE-2026-81578. The post More Details Emerge on Exploited PaperCut Vulnerabilities appeared first on SecurityWeek.

FulcrumSec claims it stole 86 GB of data from Manchester Airports Group. BleepingComputer validated one traveller's record, while samples revealed detailed customer, booking, and travel information beyond what MAG initially disclosed. [...]

Anthropic is warning some Claude users that infostealer malware on their PCs has stolen active Claude login sessions, allowing attackers to access accounts and consume their usage. [...]

Multiple extensions for Google Chrome and Microsoft Edge delivered a malware framework that deployed modules to steal cryptocurrency, sensitive data, and browser history, as well as inject ClickFix lures. [...]

Microsoft has disclosed details of a new ClickFix variant, dubbed TerminalFix, that aims to trick users into running a malicious command in Windows Terminal or PowerShell. "While traditional ClickFix campaigns direct victims to the Windows Run dialog, TerminalFix campaigns apply the same technique but direct users to Windows Terminal or PowerShell instead, increasing the likelihood that complex

Anthropic is permanently increasing Claude Code's standard weekly usage limits by 25% for Pro, Max, Team, and seat-based Enterprise plans, but it's not as good as it sounds. [...]

Multiple critical security flaws have been disclosed in WordPress plugins and themes, including WPMU DEV Dashboard, Avada, TranslatePress, Pods, and GiveWP, that could lead to authentication bypass, account takeover, and arbitrary code execution. The vulnerabilities, according to Wordfence and Patchstack, are listed below - CVE-2026-76581 (CVSS score: 9.8) - An authentication bypass flaw in

The latest version of the Brave browser, 1.94, introduces a feature called 'Email Aliases' that allows users to generate disposable email addresses when signing up to a new service. [...]

A cyberattack caused disruptions at the toy and game giant earlier this year and the company is now disclosing a data breach. The post Hasbro Data Breach Exposed Employee Personal Information appeared first on SecurityWeek.

Healthcare and pharmaceutical distribution giant McKesson has disclosed a cybersecurity incident involving unauthorized access to third-party applications and data theft, with the ShinyHunters extortion group claiming it stole 284 million patient data records. [...]

Berlin's state government has confirmed that it is the target of an extortion attempt following the August compromise of the city's state administrative network, and said it will not meet the extortionists' demands. The same statement disclosed that forensic work had found further data outflows in the portfolio of the Senate Department for Mobility, Transport, Climate Protection and Environment