Author: Curated

Source: Varonis Blog

Author: Daniel Miller

URL: https://www.varonis.com/blog/cloud-telemetry

1. ONE SENTENCE SUMMARY: Telemetry enables proactive cloud security by analyzing real-time data to detect anomalies, strengthen defenses, and respond swiftly to threats.

2. MAIN POINTS:

3. Telemetry collects real-time data to monitor cloud environments and detect security threats proactively.

4. AWS CloudTrail logs API calls, aiding in auditing, compliance, and detecting unauthorized access.

5. Azure Monitor analyzes telemetry data, integrating with Azure Security Center for enhanced threat detection.

6. Google Cloud Audit Logs track resource actions to detect suspicious activities and ensure policy compliance.

7. Telemetry helps identify unusual patterns, like spikes in API calls signaling potential breaches.

8. Detailed telemetry records support auditing and demonstrate compliance with regulatory requirements.

9. Continuous telemetry monitoring improves security posture by addressing vulnerabilities in real-time.

10. Automation of telemetry monitoring ensures prompt detection and response to threats.

11. Integrating telemetry data with SIEM enhances comprehensive threat detection and security visibility.

12. Challenges like data volume, quality, and integration complexity require effective data management strategies.

13. TAKEAWAYS:

14. Utilize cloud provider tools (AWS CloudTrail, Azure Monitor, GC Audit Logs) for robust telemetry.

15. Continuously monitor telemetry data to proactively detect and respond to threats.

16. Integrate telemetry solutions with SIEM systems for comprehensive security insights.

17. Automate telemetry monitoring processes to improve efficiency and threat response speed.

18. Address telemetry challenges with efficient data management, validation, and standardized integration practices.

Source: Active Countermeasures

Author: Faan Rossouw

URL: https://www.activecountermeasures.com/threat-hunting-c2-over-https-connections-using-the-tls-certificate/

ONE SENTENCE SUMMARY: The article discusses techniques for threat hunting command and control (C2) activity hidden within HTTPS connections using TLS certificates.

MAIN POINTS:

1. Threat actors often hide C2 traffic within encrypted HTTPS connections.
2. TLS certificates can provide valuable indicators for detecting malicious activities.
3. Legitimate certificates are sometimes misused by attackers for C2 communications.
4. Anomalies in TLS certificate metadata help identify suspicious HTTPS connections.
5. Certificate attributes like issuer, validity period, and domain can indicate malicious usage.
6. Automated tools can analyze TLS certificates efficiently to detect threats.
7. Inspecting certificates is essential for effective threat hunting practices.
8. TLS certificate fingerprinting helps identify known malicious infrastructure.
9. Monitoring certificate issuance patterns can uncover malicious actors’ infrastructure.
10. Properly implemented TLS certificate inspection enhances cybersecurity posture.

TAKEAWAYS:

1. Leverage TLS certificate metadata analysis to detect hidden C2 channels.
2. Pay attention to unusual certificate attributes to identify potential threats.
3. Integrate certificate inspection into existing threat hunting methodologies.
4. Automate TLS certificate monitoring to efficiently spot anomalies.
5. Maintain updated threat intelligence on TLS certificate misuse for effective detection.

Source: Dark Reading

Author: unknown

URL: https://www.darkreading.com/cyber-risk/you-dont-need-red-team

ONE SENTENCE SUMMARY: Attack path mapping, a collaborative and cost-effective offensive security methodology, offers broader coverage and better educates teams compared to traditional red-team exercises.

MAIN POINTS:

1. Most red-team exercise requests are redirected due to client readiness, budget, or understanding issues.
2. Attack path mapping involves collaboration between offensive operators and internal security SMEs.
3. Traditional red-team tests identify only the simplest paths rather than providing comprehensive coverage.
4. Attack path mapping starts by defining critical business objectives and potential attacker entry points.
5. Working transparently with internal experts accelerates reconnaissance and better maps attack paths.
6. Cloud-native environments demand collaborative testing due to advanced identity management protections.
7. Realistic scenarios such as compromised DevOps roles offer better insights into actual security risks.
8. Purple teams, while beneficial, often sacrifice realism by overly focusing on endpoint security tests.
9. Automated purple team exercises effectively assess detection capabilities but overlook deeper threats.
10. The suggested collaborative methodology provides more comprehensive insights and better overall value.

TAKEAWAYS:

1. Collaborative methodologies provide broader security coverage than traditional stealth-based red teams.
2. Engaging internal experts significantly accelerates offensive security assessments and enriches outcomes.
3. Realistic attacker scenarios better address genuine security threats than standard isolated test cases.
4. Cloud security assessments benefit significantly from granting testers higher visibility and realistic privileges.
5. Carefully evaluate whether a traditional red-team exercise truly meets your organization’s security needs.

Source: Help Net Security

Author: Mirko Zorz

URL: https://www.helpnetsecurity.com/2025/05/22/tim-grieveson-thingsrecon-asset-inventory-gaps/

ONE SENTENCE SUMMARY: Tim Grieveson emphasizes ongoing automated asset discovery, cross-functional collaboration, addressing overlooked blind spots, and context-driven risk prioritization.

MAIN POINTS:

1. Asset inventory should be ongoing, automated, and integrated with business context, not a one-time project.
2. Communicating inventory issues openly with stakeholders is crucial for managing associated risks.
3. Leveraging existing endpoint agents, cloud providers, DNS records, and procurement systems enhances initial visibility.
4. Implementing dedicated continuous discovery tools significantly improves security visibility and asset context.
5. Clearly defining inventory scope and categorizing assets prevents critical elements from being overlooked.
6. Asset inventory requires collaboration across security, IT operations, development, network, and business teams.
7. Biggest blind spot is relying solely on documentation without validating actual live assets.
8. Commonly overlooked assets include subdomains, public APIs, third-party integrations, and misconfigured DNS services.
9. Asset discovery must integrate closely with vulnerability management, threat detection, and CMDB systems.
10. Contextual information (exposure, business-criticality, usage) is essential for accurate asset risk prioritization.

TAKEAWAYS:

1. Shift asset inventory mindset from periodic audits to continuous, automated discovery.
2. Build cross-functional teams to maintain comprehensive asset visibility across organizational silos.
3. Regularly validate documented assets against actual infrastructure to prevent blind spots.
4. Expand discovery to external, third-party, and edge assets beyond traditional network boundaries.
5. Prioritize risk based on asset exposure, criticality, and business context rather than just severity scores.

Source: Dark Reading

Author: Denny LeCompte

URL: https://www.darkreading.com/cyber-risk/hidden-cybersecurity-risks-mergers-acquisitions

1. ONE SENTENCE SUMMARY: Ignoring cybersecurity during mergers and acquisitions exposes businesses to hidden vulnerabilities, compliance issues, and costly security breaches post-acquisition.

2. MAIN POINTS:

3. Mergers involve inheriting digital footprints including endpoints, credentials, and hidden security vulnerabilities.

4. Cybersecurity is frequently neglected in due diligence, creating substantial risk post-acquisition.

5. IT integration chaos often leads to insufficient access control and outdated credential management.

6. Legacy systems from acquired companies pose significant cybersecurity threats if not assessed.

7. Employees are vulnerable to phishing scams during transitions, increasing insider threat risks.

8. Inadequate cybersecurity training can result in sensitive data leaks and breaches post-merger.

9. Regulatory and compliance mismatches between companies can create serious legal and financial liabilities.

10. Comprehensive cybersecurity audits must evaluate identities, compliance histories, and past breaches.

11. Companies should promptly standardize security policies and adopt modern, cloud-native security solutions.

12. Proactive cybersecurity integration during mergers is essential to protect reputation, trust, and financial value.

13. TAKEAWAYS:

14. Prioritize cybersecurity due diligence alongside financial and operational assessments.

15. Enforce strict access control policies and revoke outdated credentials immediately post-acquisition.

16. Conduct thorough audits of legacy IT systems and address incompatibilities proactively.

17. Implement cybersecurity awareness and anti-phishing training programs early in the merger process.

18. Align quickly with the strictest compliance standards from both companies to mitigate regulatory risks.

Source: BadSuccessor: Unpatched Microsoft Active Directory attack enables domain takeover | CSO Online

Author: unknown

URL: https://www.csoonline.com/article/3992456/badsuccessor-unpatched-microsoft-active-directory-attack-enables-domain-takeover.html

ONE SENTENCE SUMMARY:

Researchers discovered a critical vulnerability named “BadSuccessor” in Windows Server 2025 Active Directory allowing attackers full domain compromise without needing privileged accounts.

MAIN POINTS:

1. Researchers identified “BadSuccessor,” a new vulnerability in Windows Server 2025 Active Directory.
2. The flaw exploits Delegated Managed Service Accounts (dMSA), intended to mitigate Kerberoasting attacks.
3. Attackers can impersonate any user, including domain administrators, through manipulated dMSA account attributes.
4. Microsoft rated the issue moderately severe, not immediately urgent, despite researchers’ strong disagreement.
5. dMSA accounts inherit permissions of superseded service accounts through migration processes lacking proper validation.
6. Key Distribution Center (KDC) mistakenly grants privileges based solely on easily manipulated account attributes.
7. Attackers can exploit CreateChild permissions on Organizational Units (OUs) to create malicious dMSA accounts.
8. Unprivileged users can arbitrarily set attributes to falsely indicate completed migrations, gaining unauthorized privileges.
9. Attackers can extract encrypted passwords included in the KERB-DMSA-KEYPACKAGE structure of session tickets.
10. Akamai released a PowerShell script and monitoring guidelines for organizations until Microsoft provides an official patch.

TAKEAWAYS:

1. Immediately restrict CreateChild permissions to trusted administrators.
2. Use Akamai’s provided PowerShell script to audit current AD environments for vulnerable permissions.
3. Implement recommended SACLs to log suspicious dMSA creations and attribute modifications.
4. Regularly monitor for unusual TGTs containing KERB-DMSA-KEYPACKAGE structures.
5. Advocate for urgent internal review of AD permissions despite Microsoft’s moderate severity rating.

Source: The Red Canary Blog: Information Security Insights

Author: Sam Straka

URL: https://redcanary.com/blog/security-operations/conditional-access-cisco-duo/

1. ONE SENTENCE SUMMARY: This blog compares Microsoft’s Entra ID Conditional Access and Cisco’s Duo Adaptive Access Policies, highlighting their similarities, differences, and integration possibilities.

2. MAIN POINTS:

3. Duo primarily provides MFA layered over existing identity solutions, unlike full IAM platforms like Microsoft.

4. Duo policies can be globally applied or targeted per application/user group, similar to Entra ID.

5. Duo enforces MFA by default, with conditional bypass options for trusted scenarios.

6. Device compliance checks in Duo use certificates or health apps, comparable to Entra ID Intune integration.

7. Duo’s user interface for granular device policy rules is user-friendly and intuitive.

8. Duo offers geolocation and trusted network conditions similar to Entra ID’s named locations.

9. Duo introduced Risk-Based Authentication (RBA) in 2023, focusing on anomalies during MFA steps.

10. Duo doesn’t directly block legacy authentication, relying instead on primary authentication systems.

11. Duo excels at enforcing device health and compliance checks for sensitive resource access.

12. Duo integrates as a third-party MFA provider with Entra ID Conditional Access via custom controls.

13. TAKEAWAYS:

14. Duo is ideal for organizations looking primarily for strong MFA and device health checks.

15. Microsoft Entra ID offers deeper integration with device management and broader risk evaluation signals.

16. Duo’s RBA effectively addresses MFA fatigue and anomalous sign-in behaviors.

17. Combining Duo with Entra ID provides comprehensive conditional access coverage but introduces complexity.

18. Advanced conditional access features in both solutions require higher-tier licensing plans.

Source: The Hacker News

Author: info@thehackernews.com (The Hacker News)

URL: https://thehackernews.com/2025/05/aws-default-iam-roles-found-to-enable.html

ONE SENTENCE SUMMARY:

Researchers discovered insecure default IAM roles in AWS services enabling attackers to escalate privileges and compromise entire AWS accounts.

MAIN POINTS:

1. Default IAM roles in AWS services grant overly broad permissions, enabling privilege escalation.
2. Vulnerable IAM roles found in AWS services like SageMaker, Glue, EMR, and Lightsail.
3. Similar issues identified in open-source framework Ray, using AmazonS3FullAccess policy.
4. Attackers exploit default IAM roles to move laterally across AWS services.
5. IAM roles with AmazonS3FullAccess provide complete read/write access to all S3 buckets.
6. Attackers can modify AWS assets such as CloudFormation templates and SageMaker resources.
7. Malicious machine learning models uploaded to Hugging Face can execute arbitrary code on SageMaker.
8. AWS addressed vulnerabilities by restricting AmazonS3FullAccess policy for default roles.
9. Researchers advise organizations to audit and tightly scope default IAM role permissions.
10. Similar privilege escalation vulnerability found in Azure Storage mounting utility AZNFS-mount.

TAKEAWAYS:

1. Default IAM roles must be strictly limited to required resources and actions.
2. Organizations should proactively audit default IAM role permissions to minimize risk.
3. Permissive IAM roles can break isolation boundaries between cloud services.
4. Attackers leverage broad IAM permissions for lateral movement and privilege escalation.
5. Cloud providers regularly patch vulnerabilities; organizations must promptly apply security updates.

Source: Medium

Author: Graeme Keith

URL: https://www.cantorsparadise.com/why-probability-theory-is-hard-af838f053882

ONE SENTENCE SUMMARY:

Probability theory is fundamentally challenging due to its non-intuitive nature, conceptual confusion, and reliance on deliberate, slow cognitive processing.

MAIN POINTS:

1. Probability theory lacks intuitive understanding, unlike mechanical systems we naturally learn through repetition.
2. Humans struggle to develop reliable intuition for uncertain systems due to inconsistent outcomes.
3. Kahnemann’s “Thinking Fast and Slow” emphasizes probability’s reliance on slow, deliberate System II thinking.
4. Even experienced mathematicians rarely develop instinctive probabilistic intuitions, despite extensive practice.
5. Probability theorists disagree fundamentally on definitions, causing confusion for learners.
6. Practical probability problems often involve unclear outcome spaces, complicating conceptual clarity.
7. Probability education frequently resorts to rote memorization due to conceptual complexity.
8. Notation in probability theory is often confusing, complicating student comprehension.
9. Despite complexity, basic probability knowledge significantly improves decision-making under uncertainty.
10. Minimal probabilistic understanding is vastly superior to purely intuitive or guess-based approaches.

TAKEAWAYS:

1. Accept that probability is inherently difficult, not due to personal inadequacy.
2. Focus on developing methodical, slow-thinking approaches to probability problems.
3. Be patient and kind with yourself when struggling with probabilistic concepts.
4. Prioritize basic probabilistic literacy to substantially enhance practical decision-making.
5. Understand that conceptual disagreements within probability theory contribute to its learning difficulty.

Source: BleepingComputer

Author: Lawrence Abrams

URL: https://www.bleepingcomputer.com/news/microsoft/new-defendnot-tool-tricks-windows-into-disabling-microsoft-defender/

1. ONE SENTENCE SUMMARY: The Defendnot tool exploits an undocumented Windows API to disable Microsoft Defender by registering a fake antivirus product.

2. MAIN POINTS:

3. Defendnot disables Microsoft Defender by registering a fake antivirus using Windows Security Center API.

4. Windows disables Defender automatically when another antivirus registers to prevent security conflicts.

5. Researcher es3n1n developed Defendnot based on an earlier project called no-defender.

6. The earlier no-defender tool was removed from GitHub due to a DMCA copyright claim.

7. Defendnot avoids legal issues by using a self-built dummy antivirus DLL rather than third-party code.

8. Protected Process Light (PPL) and digital signatures normally safeguard the WSC API.

9. Defendnot bypasses security by injecting its DLL into the trusted Microsoft-signed Taskmgr.exe process.

10. The tool supports configuration via ctx.bin file, custom antivirus names, and verbose logging.

11. Defendnot achieves persistence by creating an autorun entry in Windows Task Scheduler.

12. Microsoft Defender identifies and quarantines Defendnot as ‘Win32/Sabsik.FL.!ml’.

13. TAKEAWAYS:

14. Windows Security Center API can be manipulated to disable built-in security defenses.

15. Trusted processes like Task Manager can be exploited to bypass Windows security protections.

16. Persistence mechanisms via Task Scheduler highlight the importance of monitoring scheduled tasks.

17. Microsoft Defender actively detects and blocks Defendnot, signaling ongoing defender capabilities.

18. Security teams should be aware of undocumented APIs and regularly audit registered antivirus products.

Source: 73% of CISOs admit security incidents due to unknown or unmanaged assets | CSO Online

Author: unknown

URL: https://www.csoonline.com/article/3980431/more-assets-more-attack-surface-more-risk.html

Key Takeaways:

1. Lack of Asset Visibility and Accurate Management
   Almost three-quarters (73%) of cybersecurity leaders experienced incidents directly linked to unidentified or improperly managed IT assets. Without full visibility into their digital environments, organizations struggle to fully grasp the extent and nature of their potential vulnerabilities, significantly weakening their cybersecurity.

2. Recognition of Impact on Business Risk
   Approximately 9 out of 10 executives recognize the critical importance of effectively managing the digital attack surface as it directly affects business risk. Security issues stemming from mismanaged or unknown IT assets can have serious consequences, including interruptions in business continuity (42%), harm to customer trust and brand reputation (39%), diminished competitiveness (39%), weakened supplier relationships (39%), and negative impacts on employee productivity and financial performance (38% each).

3. Inadequate adoption of Proactive Risk Management
   Despite clear recognition of the threat and the potential negative impacts on business operations, only 43% of companies actively use specialized tools for proactive attack surface management. A large majority (58%) stated they lack continuous monitoring processes—even though such proactive security management tools and monitoring are essential for promptly mitigating and containing cybersecurity risks.

4. Urgent Call to Action
   The survey highlights an increasing urgency for improving cybersecurity posture. Many enterprises remain behind the curve, reluctant or slow in adopting robust security strategies, tools, and ongoing monitoring processes needed to contain their rapidly expanding cyber risks. Cyber risk management must be prioritized at the highest levels to safeguard enterprises effectively.

In conclusion, the Trend Micro survey points to a common cybersecurity challenge: while businesses are aware of the problem and its serious consequences, actual implementation to proactively manage and reduce the attack surface remains limited and inadequate. Chief security officers and business leaders must urgently prioritize comprehensive visibility, proper asset inventory management, continuous risk monitoring, and proactive management to minimize cybersecurity incidents and shield their organization from severe business disruptions.

Source: Cisco Talos Blog Author: Mike Trewartha URL: https://blog.talosintelligence.com/proactive-threat-hunting-with-talos-ir/

ONE SENTENCE SUMMARY:

Cisco Talos IR proactively enhances cybersecurity through structured threat hunting using baseline analysis, hypothesis-driven investigations, and machine learning.

MAIN POINTS:

1. Cisco Talos IR emphasizes proactive threat hunting to prevent cybersecurity incidents.
2. The PEAK Framework (Prepare, Execute, Act with Knowledge) guides precise threat hunting methodologies.
3. Baseline hunts document normal system behaviors to detect anomalous activities signaling threats.
4. Hypothesis-driven hunts test specific assumptions based on emerging threat intelligence.
5. Model-assisted threat hunts (M-ATH) utilize machine learning to uncover hidden threats.
6. Talos Threat Intelligence enriches threat hunting, refining hypotheses and enhancing detection accuracy.
7. Talos IR Retainer customers receive ongoing proactive threat hunting engagements.
8. Early detection through proactive hunts reduces the risk of threats escalating.
9. Continuous improvement of hunting models strengthens organizational security posture over time.
10. Real-time collaboration with Incident Response ensures rapid containment and mitigation.

TAKEAWAYS:

1. Proactive threat hunting complements traditional cybersecurity defenses.
2. Establishing baselines is crucial to spotting subtle malicious activities.
3. Regular hypothesis testing helps anticipate attacker behaviors and tactics.
4. Leveraging machine learning significantly boosts threat detection capabilities.
5. Integration of threat intelligence data ensures hunts remain relevant and effective.

Source: Help Net Security Author: Mirko Zorz URL: https://www.helpnetsecurity.com/2025/04/29/automating-cyber-hygiene/

1. ONE SENTENCE SUMMARY: Automation in cyber hygiene enhances visibility, streamlines patching and credential management, yet requires human oversight to manage exceptions effectively.

2. MAIN POINTS:

3. Automate asset discovery first to ensure comprehensive visibility of systems and accounts.

4. Exposure management tools provide critical external asset discovery without internal assumptions.

5. Effective exposure management identifies shadow IT, dangling DNS, risky cloud usage, and domain squatting.

6. Automating patches requires fallback mechanisms, clear alerts, and alignment with business schedules.

7. Prioritize patches based on vulnerability exploitability, not simply availability.

8. Automate credential rotation for service accounts, privileged credentials, and API keys.

9. Credential vaulting tools prevent hardcoded passwords, unauthorized sharing, and provide detailed audit logs.

10. Automate onboarding and offboarding of employees to ensure timely account provisioning and revocation.

11. Avoid automating exception handling; humans should approve and renew exceptions regularly.

12. Automate alerts and reporting with prioritization based on severity, exploitability, and business impact.

13. TAKEAWAYS:

14. Always start automation efforts by establishing clear visibility across all digital assets.

15. Automation should complement, not replace, human judgment—especially regarding exceptions and access logic.

16. Credential automation and vaulting significantly reduce risk from compromised privileged accounts.

17. Align automated processes with security frameworks like NIST and ISO to enhance audit readiness and compliance.

18. Continuously measure automated processes and regularly reassess their effectiveness and risk impact.

Source: Tenable Blog Author: Patricia Grant URL: https://www.tenable.com/blog/exposure-management-works-when-the-cio-and-cso-are-in-sync

ONE SENTENCE SUMMARY: Effective exposure management requires strong CIO-CSO collaboration, unified visibility, proactive endpoint security, strategic prioritization, and clear risk communication.

MAIN POINTS:

1. CIO and CSO alignment is crucial for successful exposure management.
2. Shared responsibility between IT and security teams ensures robust enterprise protection.
3. Constant collaboration is necessary due to rapid shifts in threat landscapes.
4. Exposure management provides unified visibility across cloud, on-prem, and hybrid assets.
5. Endpoints require proactive security measures, such as rapid zero-day patching.
6. Exposure management helps identify unknown risks like forgotten systems and open ports.
7. Prioritizing vulnerabilities based on impact, not volume, leads to strategic advantage.
8. Effective cybersecurity requires modernized change management and clear communication.
9. Cyber risk must be translated into business language for effective board-level discussions.
10. Visibility through exposure management empowers customers to address critical threats effectively.

TAKEAWAYS:

1. Foster a close, trusting relationship between CIO and CSO for effective exposure management.
2. Utilize exposure management tools to prioritize impactful vulnerabilities over sheer quantity.
3. Implement proactive endpoint security practices, especially rapid response to zero-day threats.
4. Modernize change management and communication strategies to engage employees effectively.
5. Translate technical cybersecurity risks into strategic business language for board-level clarity.

Source: The Red Canary Blog: Information Security Insights Author: Brian Donohue URL: https://redcanary.com/blog/threat-detection/cybersecurity-metrics/

ONE SENTENCE SUMMARY:

Security operations centers should prioritize accuracy, volume, and timeliness metrics, carefully defining and consistently measuring them to avoid misleading interpretations.

MAIN POINTS:

1. Security metrics vary widely; clearly defined metrics ensure consistency and usefulness.
2. SOC metrics typically focus on accuracy, volume, and timeliness.
3. Mean-based metrics are problematic due to susceptibility to extreme outliers.
4. Median metrics offer a more accurate representation of typical SOC performance.
5. Definitions of detection, response, and mitigation significantly impact metric results.
6. Clarifying when measurement begins and ends is crucial to meaningful SOC metrics.
7. Time-to-detect can vary based on whether threats are identified or confirmed threats published.
8. Response metrics must define precisely when a response action officially occurs.
9. Publicly reported SOC metrics are hard to interpret without underlying context and definitions.
10. Dwell time differs from breakout time; the latter may be a more critical security metric.

TAKEAWAYS:

1. Clearly define and standardize measurement terms for SOC metrics.
2. Favor median over mean to avoid misleading results from outliers.
3. Clarify exactly when measurement “clocks” start and end for consistent metric tracking.
4. Consider both dwell time and breakout time when evaluating threat response effectiveness.
5. Always question and contextualize publicly reported SOC metrics to avoid misinterpretation.

Source: Security Blogs | Splunk Author: unknown URL: https://www.splunk.com/en_us/blog/security/windows-audit-policy-guide.html

1. ONE SENTENCE SUMMARY: Configuring Windows Advanced Audit Policies effectively balances log volume and relevance, leveraging data-driven strategies and MITRE ATT&CK alignment for optimal threat detection.

2. MAIN POINTS:

3. Windows event logs are essential but default logging lacks depth for detecting sophisticated threats.

4. Windows Advanced Audit Policies provide granular control over security event logging.

5. Advanced Audit Policies split broad categories into detailed subcategories for precise monitoring.

6. Effective configuration involves balancing event volume, relevance, and system overhead.

7. The Splunk Threat Research Team compiled Event ID mappings to simplify auditing configurations.

8. Excessive logging can overwhelm SIEM solutions, increase costs, and burden analysts.

9. STRT adopted a data-driven approach, analyzing official Microsoft and third-party guidelines.

10. Event volume data varies by installed roles, features, and configured System Access Control Lists (SACLs).

11. Certain subcategories require additional setup, registry edits, or reboots to function properly.

12. Mapping Windows Event IDs to MITRE ATT&CK techniques helps prioritize critical security events.

13. TAKEAWAYS:

14. Prioritize auditing configurations by aligning them to MITRE ATT&CK techniques and threat actor TTPs.

15. Use STRT’s Event ID mapping resources to streamline and optimize your auditing strategy.

16. Consider additional configuration requirements for certain audit subcategories to ensure proper logging.

17. Evaluate event volume and relevance carefully to avoid overwhelming security monitoring systems.

18. Leverage industry guidelines and real-world incident data to inform decisions on audit policy settings.

Source: The Hacker News Author: info@thehackernews.com (The Hacker News) URL: https://thehackernews.com/2025/04/phishers-exploit-google-sites-and-dkim.html

ONE SENTENCE SUMMARY:

Attackers executed a sophisticated phishing attack utilizing Google’s infrastructure and DKIM replay techniques, successfully bypassing security checks to harvest user credentials.

MAIN POINTS:

1. Attackers leveraged Google’s legitimate email infrastructure for phishing, bypassing typical security alerts.
2. Phishing emails appeared authentic, passing DKIM, SPF, and DMARC authentication checks.
3. Victims received fake subpoenas directing them to malicious sites hosted on Google Sites.
4. Fraudulent websites mimicked Google Support, tricking users into inputting credentials.
5. Attackers exploited legacy Google Sites’ support of arbitrary scripts to host phishing content.
6. Emails appeared to originate from “accounts.google.com,” despite originating elsewhere.
7. DKIM replay attack used Google’s OAuth application process to generate genuine-looking security alerts.
8. Gmail displayed messages as addressed to “me,” adding authenticity and reducing suspicion.
9. Google has implemented fixes to prevent this abuse pathway and advised adopting two-factor authentication.
10. Phishing attacks increasingly exploit SVG attachments to embed malicious HTML and JavaScript.

TAKEAWAYS:

1. Legitimate infrastructures like Google can be exploited for sophisticated phishing attacks.
2. DKIM signatures alone cannot guarantee email authenticity; vigilance remains essential.
3. Legacy services supporting arbitrary scripts pose significant security risks.
4. Enabling two-factor authentication and passkeys provides critical protection against phishing threats.
5. Always scrutinize unexpected security alerts, even if they appear authentic and trustworthy.

Source: BleepingComputer Author: Lawrence Abrams URL: https://www.bleepingcomputer.com/news/microsoft/widespread-microsoft-entra-lockouts-tied-to-new-security-feature-rollout/

ONE SENTENCE SUMMARY: A widespread false-positive issue with Microsoft’s new Entra ID “MACE Credential Revocation” app mistakenly locked numerous user accounts.

MAIN POINTS:

1. Microsoft Entra ID’s new MACE app rollout triggered widespread false account lockouts.
2. Alerts began last night, locking accounts that had unique passwords and MFA protections.
3. Admins reported thousands of lockout notifications across multiple organizations.
4. Reddit threads confirm multiple businesses experienced significant user account impacts.
5. Affected accounts showed no suspicious activity or matching data breaches.
6. Microsoft privately attributed the issue to errors during MACE app deployment.
7. The MACE Credential Revocation app detects leaked credentials to protect user accounts.
8. Lockouts were mistakenly flagged as leaked credentials from dark web breaches.
9. Microsoft has not yet publicly acknowledged or explained the incident officially.
10. Administrators should verify alerts but recognize mass lockouts likely due to rollout issue.

TAKEAWAYS:

1. Carefully monitor automated security rollouts for potential false positives.
2. Confirm alerts with independent breach notification tools like Have I Been Pwned.
3. Maintain clear communication channels with vendors to quickly resolve issues.
4. Consider temporarily disabling automated lockout actions during major updates.
5. Ensure rapid internal communication to minimize user disruption during incidents.