SparTech Software CyberPulse – Your quick strike cyber update for August 15, 2025 1:22 PM

Rubrik Debuts Agent Rewind to Mitigate Agentic AI Errors and Data Breaches

Rubrik has introduced its new Agent Rewind product, designed to help organizations rapidly recover from mistakes made by artificial intelligence “agents,” addressing a critical risk in environments increasingly reliant on autonomous AI systems for application and data management.

Agentic AI Risk Landscape

The proliferation of agentic AI—autonomous software agents that perform decision-making without direct human intervention—has led to growing concerns about mistakes or unforeseen actions that can compromise sensitive data, corrupt applications, or inadvertently escalate privileges within enterprise systems. Traditionally, remediation of such AI-driven disruptions required piecemeal reversal or full system restores, resulting in long recovery times and potential data loss.

Agent Rewind Technical Capabilities

Rubrik’s Agent Rewind leverages an AI-powered infrastructure, reportedly built on the Predibase platform, to create continuous visibility into all agent actions through a persistent audit layer. When a misconfiguration or unauthorized action is detected, security and IT teams can “rewind” the environment, selectively reverting applications or datasets to a previous trusted state. This offers near-instant recovery and avoids the collateral impact of wider rollback strategies. Additional features include granular event tracing, role-based rollback authorization, and compliance logging for audit trails.

Implementation and Enterprise Benefits

Enterprises integrating agentic AI orchestrators can plug Agent Rewind directly into existing Rubrik-managed infrastructure. Compatibility is a focus, with support for major public cloud services and on-premises architectures. In security terms, this model provides a safeguard not just against AI mistakes but also against potential supply-chain poisoning where malicious modifications by AI could propagate rapidly. Compliance officers can utilize Agent Rewind’s detailed event logs to support regulatory requirements, especially in industries subject to strict change control.

Trellix Brings DLP Endpoint Complete to ARM-compatible Devices

Trellix has expanded its Data Loss Prevention (DLP) Endpoint Complete suite to support ARM devices, addressing the growing use of ARM-based endpoints in corporate environments and the associated risks around data exfiltration.

Technical Context and Motivation

As businesses adopt ARM-based endpoints for energy efficiency and cost-saving reasons, many security vendors lag in offering full functionality for these architectures. Until now, data loss prevention suites have primarily targeted traditional x86/x64 platforms, leaving ARM platforms exposed to data leakage risks—especially in mobile-first or hybrid endpoint fleets.

DLP Endpoint Complete for ARM Devices

The updated solution enforces policy-driven controls designed to halt both accidental and deliberate data leak events. Capabilities include deep inspection of network and file system actions on ARM, advanced analytics to detect unauthorized transfers or device use, and automated responses such as blocking unknown USB devices or restricting sensitive data transfer. The solution integrates into compliance frameworks and supports centralized management for mixed-architecture environments.

Security Impact and Use Cases

This release closes significant gaps in organizations shifting to ARM for their endpoint strategy—notably in highly regulated industries. The platform supports forensic analysis following data loss incidents, detailed remediation workflows, and improved endpoint visibility, significantly diminishing the attack surface associated with endpoint data theft.

Microsoft August 2025 Patch Tuesday: Critical Vulnerabilities in Kerberos, Azure, and Windows Graphics

Microsoft’s August 2025 Patch Tuesday addressed 111 vulnerabilities, with several receiving critical severity scores due to their potential to enable remote code execution, privilege escalation, and domain-wide compromise via Kerberos.

Kerberos Zero-day: “BadSuccessor”

Among the most severe is the “BadSuccessor” Kerberos vulnerability, exploitable to achieve full Active Directory domain compromise. While the immediate risk is mitigated by specific requirements—namely, it only affects domains with at least one Windows Server 2025 domain controller—a compromise would grant an attacker deep persistent access to enterprise networks. The vulnerability highlights the importance of rapid patch adoption for domain controllers and elevates concerns about authentication system weaknesses in hybrid-identity environments.

Other Critical Bugs Fixed

  • Azure OpenAI Elevation of Privilege Vulnerability (CVE-2025-53767, CVSS 10.0), giving attackers administrative access in some Azure deployments.
  • GDI+ Remote Code Execution Vulnerability (CVE-2025-53766, CVSS 9.8), exposing endpoints to code execution through crafted image files.
  • Windows Graphics Component Remote Code Execution (CVE-2025-50165, CVSS 9.8), affecting enterprise workstations.
  • Azure Portal Elevation of Privilege (CVE-2025-53792, CVSS 9.1) and Microsoft 365 Copilot BizChat Information Disclosure (CVE-2025-53787, CVSS 8.2), raising the risk of privilege abuse and data leakage in cloud services.

Mitigation and Security Operations Guidance

Security teams are advised to prioritize patching of domain controllers and high-exposure endpoints. Where direct patching is delayed, mitigations such as network segmentation and heightened monitoring of authentication traffic are recommended. Azure customers should review administrative permissions and audit access to OpenAI and Portal integrations.

Fortinet and Ivanti Announce August 2025 Security Patches

Fortinet and Ivanti have rolled out August security advisories covering multiple vulnerabilities in their respective products, continuing a year of high-impact exposures in network security appliances and endpoint management platforms.

Fortinet Updates

This month’s Fortinet patch addresses vulnerabilities in FortiGate firewalls, FortiManager, and FortiAnalyzer, including issues affecting SSL VPN, configuration management, and file parsing modules. Of particular concern are flaws that could facilitate remote code execution, cross-site scripting, or authentication bypass in SSL VPN and firewall management interfaces. These vulnerabilities are actively being probed by attackers exploiting unpatched appliances exposed to the internet.

Ivanti Security Fixes

Ivanti’s security update remediates vulnerabilities in its endpoint management solutions, notably for Ivanti Neurons and Pulse Secure Connect, which have previously been targeted by ransomware and APT groups. Ivanti has highlighted risk scenarios where attackers might exploit chainable bugs to escalate privileges or bypass access controls in managed environments.

Deployment and Best Practices

Both vendors emphasize immediate application of the latest firmware/software updates for in-production appliances and advise administrators to review internet exposure, adjust firewall rules, and increase monitoring for post-patch exploitation attempts.

Credential Theft Surges via Fake Microsoft OAuth Applications and Tycoon Toolkit Attacks

Security researchers recently identified a surge in attacks using malicious Microsoft OAuth applications, leveraged through the Tycoon phishing toolkit to compromise user credentials in corporate Microsoft 365 environments.

Attack Vectors and Technique

Attackers use social engineering and phishing emails to push users towards authorizing fake OAuth apps masquerading as trusted brands such as RingCentral and SharePoint. The phishing messages often bypass multi-factor authentication by prompting legitimate OAuth authorization flows, with the malicious apps requesting permissions that grant persistent access to mail, files, and other cloud resources. The Tycoon toolkit automates the generation and deployment of these fake OAuth apps, accelerating the credential theft campaign.

Defensive Improvements and Risk Outlook

In response, Microsoft is phasing out legacy authentication protocols and has announced new controls to harden OAuth consent workflows, set for rollout at the end of the month. Security leaders are encouraged to audit app consent logs, enforce conditional access, and train users to recognize consent prompts as a potential risk, not just phishing emails.

INC Ransom Claims Large Data Breach At Former 99 Cents Only, Not Dollar Tree

The INC Ransom group recently claimed responsibility for leaking 1.2 terabytes of sensitive information allegedly tied to Dollar Tree. However, Dollar Tree clarified the data actually belongs to 99 Cents Only, a chain it recently acquired rights from, emphasizing no current Dollar Tree employees were affected.

Background of the Breach

When 99 Cents Only filed for bankruptcy last year, Dollar Tree obtained rights to former leases, intellectual property, and store equipment. Although INC Ransom posted the data as belonging to Dollar Tree, the breach is actually tied to former 99 Cents Only employee records and related business data, not customers or current Dollar Tree personnel.

Implications and Lessons for Mergers & Acquisitions

Mergers and acquisitions create windows of exposure as data transitions between entities and new asset inventories are integrated. This incident underscores the importance of conducting robust cybersecurity assessments and remedial actions during M&A transitions—particularly for inherited employee, HR, and business systems data. Security leaders should ensure legacy assets are inventoried, segmented, and reviewed for inherited vulnerabilities before integration.

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