All news with #microsoft tag

CISO Imperative: Building Resilience in Accelerating Threats

🔒 The Microsoft Digital Defense Report 2025 warns that cyber threats are accelerating in speed, scale, and sophistication, driven by AI and coordinated, cross-border operations. Attack windows have shrunk—compromises can occur within 48 hours in cloud containers—while AI-powered phishing and credential theft have grown markedly more effective. For CISOs this requires reframing security as a business enabler, prioritizing resilience, automation, and modern identity controls such as phishing-resistant MFA. The Secure Future Initiative provides practitioner-tested patterns to operationalize these priorities.

Chinese Groups Exploit ToolShell SharePoint Flaw Widespread

🔒 Symantec reports that China-linked threat actors exploited the ToolShell vulnerability in Microsoft SharePoint (CVE-2025-53770) weeks after Microsoft issued a July 2025 patch, compromising a Middle Eastern telecom and multiple government and corporate targets across regions. Attackers used loaders and backdoors such as KrustyLoader, ShadowPad and Zingdoor, and in several incidents employed DLL side-loading and privilege escalation via CVE-2021-36942. Symantec notes the operations aimed at credential theft, stealthy persistence, and likely espionage, with activity linked to groups including Linen Typhoon, Violet Typhoon, Storm-2603 and Salt Typhoon.

Jingle Thief: Inside a Cloud Gift Card Fraud Campaign

🔍Unit 42 details the Jingle Thief campaign, a Morocco‑based, financially motivated operation that uses phishing and smishing to harvest Microsoft 365 credentials and abuse cloud services to commit large‑scale gift card fraud. The actors maintain prolonged, stealthy access for reconnaissance across SharePoint, OneDrive and Exchange, and rely on internal phishing, inbox rules and rogue device enrollment in Entra ID to persist and issue unauthorized cards. The report (cluster CL‑CRI‑1032) links the activity to Atlas Lion/STORM‑0539 and emphasizes identity‑centric detections and mitigations.

Amazon RDS for SQL Server: Preserve CDC on Restore

🛡️ Amazon RDS for SQL Server now preserves Change Data Capture (CDC) settings and metadata when restoring native database backups. By specifying the KEEP_CDC option during a restore, customers retain CDC configuration and any captured change data, preventing gaps in ongoing data-capture workflows. This capability is available in all AWS Regions where Amazon RDS for SQL Server is offered and is documented in the RDS for SQL Server User Guide.

Vendor and Hyperscaler Watch: Attack Surface Tools

🔎 Cyber asset attack surface management (CAASM) and external ASM (EASM) solutions help organizations discover and continuously monitor internet-facing assets to reduce exposure and harden security. The article surveys a dozen commercial offerings — including Axonius, CrowdStrike Falcon Exposure, Microsoft Defender EASM, and Palo Alto Cortex Xpanse — highlighting discovery methods, integrations, AI features, and sample pricing. It stresses continuous monitoring, asset context and prioritization, and recommends vetting vendor automation, remediation workflows, and pricing transparency.

Updates enforce SID checks, causing Windows login failures

🔒 Microsoft confirmed that Windows updates released on and after August 29, 2025 enforce additional SID checks that can break Kerberos and NTLM authentication on devices with duplicate Security Identifiers (SIDs). Affected systems — including Windows 11 24H2, Windows 11 25H2, and Windows Server 2025 — may experience failed Remote Desktop sessions, SEC_E_NO_CREDENTIALS event errors, and "access denied" messages. The fault commonly arises when images are duplicated without using Sysprep. Microsoft recommends rebuilding impacted machines with supported imaging procedures or obtaining a temporary Group Policy from Support as an interim measure.

Microsoft Security Store Unites Partners and Innovation

🔐 Microsoft Security Store, released to public preview on September 30, 2025, is a unified, AI-powered marketplace that lets organizations discover, buy, and deploy vetted security solutions and AI agents. Catalog items — organized by frameworks like NIST and by integration with products such as Microsoft Defender, Sentinel, Entra, and Purview — address threat protection, identity, compliance, and cloud security. Built on the Microsoft Marketplace, it provides unified billing, MACC eligibility, and guided automated provisioning to streamline deployments.

Microsoft fixes bug blocking classic Outlook startup

🛠️ Microsoft has implemented a fix for a major issue that prevented some Microsoft 365 customers from launching the classic Outlook client on Windows. Affected users reported errors indicating the app could not be started, the Outlook window would not open, or Exchange sign-in failed. Microsoft marked the incident as fixed and said the Outlook team is monitoring the rollout, while recommending Outlook Web Access or the new Outlook for Windows as temporary workarounds.

Microsoft October 2025 Patch Causes Enterprise Failures

🚨 The October 2025 Windows security update KB5066835, intended to move cryptography from CSP to KSP, is causing widespread enterprise disruption. Affected platforms — including Windows 10 (22H2), Windows 11 (23H2–25H2) and several Windows Server releases — report smartcard and certificate failures, USB mouse/keyboard loss in WinRE, IIS ERR_CONNECTION_RESET and WUSA installation errors. Microsoft published a registry workaround (DisableCapiOverrideForRSA=0) and an out‑of‑band update (KB5070773) for some issues, but urges caution and recommends thorough testing before broad deployment.

Reducing Abuse of Microsoft 365 Exchange Online Direct Send

🛡️ Cisco Talos warns that Microsoft 365 Exchange Online’s Direct Send feature, intended for legacy devices and line‑of‑business appliances, is being abused to bypass standard authentication and content inspection. Attackers are leveraging these unauthenticated SMTP flows in phishing and BEC campaigns by impersonating internal users and embedding obfuscated lures such as QR codes and empty‑body messages. Talos recommends a phased approach — inventorying dependencies, migrating devices to authenticated SMTP or partner connectors, and validating mailflows before enabling RejectDirectSend — to reduce risk without disrupting critical workflows.

Microsoft fixes USB input bug that broke WinRE access

🔧 Microsoft released an out-of-band cumulative update, KB5070773, to restore USB mouse and keyboard functionality in the Windows Recovery Environment (WinRE) after October 2025 security updates disabled USB input in recovery on affected client and server builds. The patch began rolling out on October 20, 2025 and Microsoft recommends installing the latest updates. If a device cannot boot to install the patch, workarounds include using a touchscreen’s touch keyboard, connecting PS/2 peripherals, or booting from a previously created USB recovery drive.

Microsoft October update disables USB input in WinRE

⚠ After installing the October 14, 2025 security update KB5066835, USB-wired mice and keyboards do not function in the Windows Recovery Environment (WinRE), Microsoft confirmed. The devices continue to operate normally inside the Windows OS, but WinRE navigation is blocked, affecting Windows 11 (24H2, 25H2) and Windows Server 2025. Microsoft is working on a fix expected in the coming days; meanwhile users can rely on Bluetooth peripherals or legacy PS/2 input devices as a workaround.

CISA Adds Five Exploited Bugs Including Oracle EBS SSRF

⚠️ CISA added five vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, confirming CVE-2025-61884 — an SSRF in the Runtime component of Oracle E-Business Suite — is being weaponized in the wild. The agency warns CVE-2025-61884 is remotely exploitable without authentication and follows active exploitation of CVE-2025-61882, a critical RCE bug. The KEV update also includes high-severity issues in Microsoft Windows SMB Client, Kentico Xperience CMS, and Apple JavaScriptCore, and FCEB agencies must remediate them by November 10, 2025.

CISA: Windows SMB Privilege Escalation Actively Exploited

🔒 CISA warns that threat actors are actively exploiting a high-severity Windows SMB vulnerability tracked as CVE-2025-33073, which can allow elevation to SYSTEM on unpatched machines. Microsoft patched the flaw in its June 2025 Patch Tuesday release, citing an improper access control weakness that can be abused over a network. The bug affects Windows Server, Windows 10 and Windows 11 up to 24H2. Federal agencies must remediate within three weeks under BOD 22-01, and all organizations are urged to apply the update immediately.

GlassWorm Worm Infects OpenVSX and VS Code Extensions

🛡️ A sophisticated supply-chain campaign called GlassWorm is propagating through OpenVSX and Microsoft VS Code extensions and is estimated to have about 35,800 active installs. The malware conceals malicious scripts using invisible Unicode characters, then steals developer credentials and cryptocurrency wallet data while deploying SOCKS proxies and hidden VNC clients for covert access. Operators rely on the Solana blockchain for resilient C2, with Google Calendar and direct-IP fallbacks.

Migration to Azure SQL Drives Operational and AI Gains

🚀 This Microsoft case study showcases how three organizations—Thomson Reuters, Hexure, and CallRevu—jumpstarted modernization by migrating on-premises SQL workloads to Azure SQL Managed Instance and complementary Azure services. The migrations reduced operational overhead, improved resiliency, and enabled faster deployments. Customers reported dramatic performance improvements, shorter migration windows, and a scalable foundation for AI-driven features and insights.

Inside the attack chain: Azure Blob Storage threats

🔐 Microsoft Threat Intelligence analyzes how attackers target Azure Blob Storage across the full attack chain, emphasizing risks from exposed containers, compromised keys and SAS tokens, and abuse of automation such as Event Grid and Azure Functions. The blog maps these behaviors to the MITRE ATT&CK framework and illustrates tactics including data poisoning, covert C2 via metadata, and replication-based distribution. Microsoft recommends applying zero trust principles, enforcing least privilege with Microsoft Entra RBAC/ABAC, and enabling Defender for Storage with malware scanning, CSPM, and sensitive data discovery to detect, contain, and remediate storage-focused threats.

Microsoft October Windows Updates Break Smart Card Auth

🔒 Microsoft warns the October 2025 Windows security updates are causing smart card authentication and certificate failures by switching RSA-based smart card certificates to use KSP instead of CSP. Affected systems may report errors such as "invalid provider type specified" or "CryptAcquireCertificatePrivateKey error" and Event ID 624 in the Smart Card Service log. Microsoft provides a manual workaround: set the DisableCapiOverrideForRSA registry value to 0, back up the registry first, then restart. This impacts Windows 10, Windows 11 and Windows Server releases; the company says the key will be removed in April 2026 and urges customers to work with application vendors to resolve compatibility.

Audit Microsoft 365 for Hidden Malicious OAuth Applications

🔍 Matt Kiely of Huntress Labs urges Microsoft 365 administrators to audit OAuth applications across their tenants and provides a pragmatic starting tool, Cazadora. The research shows both abused legitimate apps (Traitorware) and bespoke malicious apps (Stealthware) can persist for years and that Azure’s default user-consent model enables these abuses. Operators should check Enterprise Applications and Application Registrations for suspicious names, anomalous reply URLs (notably a localhost loopback with port 7823), and other anomalous attributes, then take remediation steps.

CISA Adds Five CVEs to Known Exploited Vulnerabilities

🚨 CISA added five vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog based on evidence of active exploitation: CVE-2022-48503 (Apple), CVE-2025-2746 and CVE-2025-2747 (Kentico Xperience Staging Sync Server), CVE-2025-33073 (Microsoft Windows SMB Client), and CVE-2025-61884 (Oracle E-Business Suite SSRF). These flaws include authentication bypasses, improper access control, and SSRF, which are frequent attack vectors and pose significant risks. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate identified KEV items by the required due dates; CISA strongly urges all organizations to prioritize timely remediation as part of their vulnerability management practice.