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From cyberattack tactics to security operations, education, and countermeasures. Read our Yagura insights.

SCS Rating System 3-Star and 4-Star: Requirements and Evaluation Differences

Sep 17, 2026

Differences Between SCS Rating 3-Star and 4-Star: Requirements, Evaluation Methods, and Validity Period

迎 健太

SCS Rating System 3-Star and 4-Star: Requirements and Evaluation Differences

Sep 17, 2026

Differences Between SCS Rating 3-Star and 4-Star: Requirements, Evaluation Methods, and Validity Period

迎 健太

SCS Rating System 3-Star and 4-Star: Requirements and Evaluation Differences

Sep 17, 2026

Differences Between SCS Rating 3-Star and 4-Star: Requirements, Evaluation Methods, and Validity Period

迎 健太

ヤグラのSCS評価制度解説。サプライチェーンのセキュリティ対策

Sep 17, 2026

SCS評価制度のログ・監視要件｜星3・星4とSIEM・SOCの役割

迎 健太

ヤグラのSCS評価制度解説。サプライチェーンのセキュリティ対策

Sep 17, 2026

SCS評価制度のログ・監視要件｜星3・星4とSIEM・SOCの役割

迎 健太

ヤグラのSCS評価制度解説。サプライチェーンのセキュリティ対策

Sep 17, 2026

SCS評価制度のログ・監視要件｜星3・星4とSIEM・SOCの役割

迎 健太

SIEMによるログ集約・分析のイメージ

Sep 17, 2026

SIEMの比較・費用｜ログ量・保存期間・運用範囲で選ぶ

迎 健太

SIEMによるログ集約・分析のイメージ

Sep 17, 2026

SIEMの比較・費用｜ログ量・保存期間・運用範囲で選ぶ

迎 健太

SIEMによるログ集約・分析のイメージ

Sep 17, 2026

SIEMの比較・費用｜ログ量・保存期間・運用範囲で選ぶ

迎 健太

What is the SCS Evaluation System? Target Companies and Overview of Measures

Sep 12, 2026

What is the SCS Evaluation System? Supply Chain Risk Evaluation Targets, 3/4 Stars, and Preparation

迎 健太

What is the SCS Evaluation System? Target Companies and Overview of Measures

Sep 12, 2026

What is the SCS Evaluation System? Supply Chain Risk Evaluation Targets, 3/4 Stars, and Preparation

迎 健太

What is the SCS Evaluation System? Target Companies and Overview of Measures

Sep 12, 2026

What is the SCS Evaluation System? Supply Chain Risk Evaluation Targets, 3/4 Stars, and Preparation

迎 健太

SCS Evaluation System Preparation Checklist: Organizing Staff, Evidence, and Deadlines

Sep 12, 2026

SCS Assessment Prep Checklist: Assigning Owners, Evidence, and Deadlines

迎 健太

SCS Evaluation System Preparation Checklist: Organizing Staff, Evidence, and Deadlines

Sep 12, 2026

SCS Assessment Prep Checklist: Assigning Owners, Evidence, and Deadlines

迎 健太

SCS Evaluation System Preparation Checklist: Organizing Staff, Evidence, and Deadlines

Sep 12, 2026

SCS Assessment Prep Checklist: Assigning Owners, Evidence, and Deadlines

迎 健太

Sep 11, 2026

What is AI SOC? Explanation of How It Works, Differences from Traditional SOC, and Benefits of Implementation

迎 健太

Sep 11, 2026

What is AI SOC? Explanation of How It Works, Differences from Traditional SOC, and Benefits of Implementation

迎 健太

Sep 11, 2026

What is AI SOC? Explanation of How It Works, Differences from Traditional SOC, and Benefits of Implementation

迎 健太

What is a SOC? Roles, Structure, and 24/7/365 Operations

Sep 11, 2026

What is a SOC? Roles, Tier Structure, the Basics and Limits of 24/7/365 Operations

迎 健太

What is a SOC? Roles, Structure, and 24/7/365 Operations

Sep 11, 2026

What is a SOC? Roles, Tier Structure, the Basics and Limits of 24/7/365 Operations

迎 健太

What is a SOC? Roles, Structure, and 24/7/365 Operations

Sep 11, 2026

What is a SOC? Roles, Tier Structure, the Basics and Limits of 24/7/365 Operations

迎 健太

Comparing In-House and Outsourced SOC

Sep 11, 2026

In-house vs. Outsourced SOC (MSS/MDR): Comparing Cost, Talent, Quality, and Speed

迎 健太

Comparing In-House and Outsourced SOC

Sep 11, 2026

In-house vs. Outsourced SOC (MSS/MDR): Comparing Cost, Talent, Quality, and Speed

迎 健太

Comparing In-House and Outsourced SOC

Sep 11, 2026

In-house vs. Outsourced SOC (MSS/MDR): Comparing Cost, Talent, Quality, and Speed

迎 健太

Differences Between MDR, MSS, XDR, and AI SOC

Sep 11, 2026

MDR vs. MSS vs. XDR vs. AI SOC: How to Choose the Right Security Operations Service

迎 健太

Differences Between MDR, MSS, XDR, and AI SOC

Sep 11, 2026

MDR vs. MSS vs. XDR vs. AI SOC: How to Choose the Right Security Operations Service

迎 健太

Differences Between MDR, MSS, XDR, and AI SOC

Sep 11, 2026

MDR vs. MSS vs. XDR vs. AI SOC: How to Choose the Right Security Operations Service

迎 健太

SOC Analyst Shortages and Alert Fatigue: The Limits of Manual Operations and Three Solutions

Sep 11, 2026

SOC Analyst Shortages and Alert Fatigue: The Limits of Manual Operations and 3 Solutions

迎 健太

SOC Analyst Shortages and Alert Fatigue: The Limits of Manual Operations and Three Solutions

Sep 11, 2026

SOC Analyst Shortages and Alert Fatigue: The Limits of Manual Operations and 3 Solutions

迎 健太

SOC Analyst Shortages and Alert Fatigue: The Limits of Manual Operations and Three Solutions

Sep 11, 2026

SOC Analyst Shortages and Alert Fatigue: The Limits of Manual Operations and 3 Solutions

迎 健太

Automated Alert Triage and AI Agent-Led Initial Investigation

Sep 11, 2026

Automating Alert Triage: How AI Agents Conduct Initial Investigations with Guaranteed Accuracy

迎 健太

Automated Alert Triage and AI Agent-Led Initial Investigation

Sep 11, 2026

Automating Alert Triage: How AI Agents Conduct Initial Investigations with Guaranteed Accuracy

迎 健太

Automated Alert Triage and AI Agent-Led Initial Investigation

Sep 11, 2026

Automating Alert Triage: How AI Agents Conduct Initial Investigations with Guaranteed Accuracy

迎 健太

MTTR, MTTD, and SOC KPI Design and Improvement

Sep 11, 2026

What are MTTR and MTTD? SOC KPI Design and Practical Improvement

迎 健太

MTTR, MTTD, and SOC KPI Design and Improvement

Sep 11, 2026

What are MTTR and MTTD? SOC KPI Design and Practical Improvement

迎 健太

MTTR, MTTD, and SOC KPI Design and Improvement

Sep 11, 2026

What are MTTR and MTTD? SOC KPI Design and Practical Improvement

迎 健太

SOAR vs. AI SOC: From Playbook Automation to Autonomous Investigation

Sep 11, 2026

The Difference Between SOAR and AI SOC: From Playbook Automation to Agent-Led Autonomous Investigation

迎 健太

SOAR vs. AI SOC: From Playbook Automation to Autonomous Investigation

Sep 11, 2026

The Difference Between SOAR and AI SOC: From Playbook Automation to Agent-Led Autonomous Investigation

迎 健太

SOAR vs. AI SOC: From Playbook Automation to Autonomous Investigation

Sep 11, 2026

The Difference Between SOAR and AI SOC: From Playbook Automation to Agent-Led Autonomous Investigation

迎 健太

SOC Building Costs and Steps to Establish 24/7 Monitoring

Sep 11, 2026

SOC Deployment Costs and Steps: Realistic Ways for Mid-Market Enterprises to Build 24/7 Monitoring

迎 健太

SOC Building Costs and Steps to Establish 24/7 Monitoring

Sep 11, 2026

SOC Deployment Costs and Steps: Realistic Ways for Mid-Market Enterprises to Build 24/7 Monitoring

迎 健太

SOC Building Costs and Steps to Establish 24/7 Monitoring

Sep 11, 2026

SOC Deployment Costs and Steps: Realistic Ways for Mid-Market Enterprises to Build 24/7 Monitoring

迎 健太

FSA Guidelines, FISC Safety Standards, and Financial Institution SOCs

Sep 11, 2026

Security Operations for Financial Institutions: FSA Guidelines, FISC Safety Standards, and SOC

迎 健太

FSA Guidelines, FISC Safety Standards, and Financial Institution SOCs

Sep 11, 2026

Security Operations for Financial Institutions: FSA Guidelines, FISC Safety Standards, and SOC

迎 健太

FSA Guidelines, FISC Safety Standards, and Financial Institution SOCs

Sep 11, 2026

Security Operations for Financial Institutions: FSA Guidelines, FISC Safety Standards, and SOC

迎 健太

Sep 11, 2026

Defense Supply Chain Security Standards (MOD New Standards & NIST SP 800-171) and SOC Requirements

迎 健太

Sep 11, 2026

Defense Supply Chain Security Standards (MOD New Standards & NIST SP 800-171) and SOC Requirements

迎 健太

Sep 11, 2026

Defense Supply Chain Security Standards (MOD New Standards & NIST SP 800-171) and SOC Requirements

迎 健太

Sep 11, 2026

Comparing and Selecting AI SOCs: PoC Evaluation Items and Fillable Checklist

迎 健太

Sep 11, 2026

Comparing and Selecting AI SOCs: PoC Evaluation Items and Fillable Checklist

迎 健太

Sep 11, 2026

Comparing and Selecting AI SOCs: PoC Evaluation Items and Fillable Checklist

迎 健太

Incident Response & SOC Integration: From Detection to Containment

Sep 11, 2026

Incident First Response & SOC Collaboration: A Practical Runbook from Detection to Containment

迎 健太

Incident Response & SOC Integration: From Detection to Containment

Sep 11, 2026

Incident First Response & SOC Collaboration: A Practical Runbook from Detection to Containment

迎 健太

Incident Response & SOC Integration: From Detection to Containment

Sep 11, 2026

Incident First Response & SOC Collaboration: A Practical Runbook from Detection to Containment

迎 健太

AI SOC with Microsoft Sentinel and Automated Legacy SIEM Operations

Sep 11, 2026

AI SOC for Microsoft Sentinel: Autonomous Operations to Maximize Existing SIEM Investments

迎 健太

AI SOC with Microsoft Sentinel and Automated Legacy SIEM Operations

Sep 11, 2026

AI SOC for Microsoft Sentinel: Autonomous Operations to Maximize Existing SIEM Investments

迎 健太

AI SOC with Microsoft Sentinel and Automated Legacy SIEM Operations

Sep 11, 2026

AI SOC for Microsoft Sentinel: Autonomous Operations to Maximize Existing SIEM Investments

迎 健太

Aug 4, 2026

What is Federated SIEM? How it Works, Benefits, and Pitfalls to Avoid Before Implementation

迎 健太

Aug 4, 2026

What is Federated SIEM? How it Works, Benefits, and Pitfalls to Avoid Before Implementation

迎 健太

Aug 4, 2026

What is Federated SIEM? How it Works, Benefits, and Pitfalls to Avoid Before Implementation

迎 健太

Jul 30, 2026

Why EDR Alone is Not Enough: The '100% Coverage' Myth and the Living off the Land Blind Spot

迎 健太

Jul 30, 2026

Why EDR Alone is Not Enough: The '100% Coverage' Myth and the Living off the Land Blind Spot

迎 健太

Jul 30, 2026

Why EDR Alone is Not Enough: The '100% Coverage' Myth and the Living off the Land Blind Spot

迎 健太

Jul 30, 2026

Why SIEM is Essential Now: Moving from Point Defense to Line-of-Sight Visibility

迎 健太

Jul 30, 2026

Why SIEM is Essential Now: Moving from Point Defense to Line-of-Sight Visibility

迎 健太

Jul 30, 2026

Why SIEM is Essential Now: Moving from Point Defense to Line-of-Sight Visibility

迎 健太

Jul 30, 2026

Why Log Correlation Analysis Matters: Revealing the Complete Attack Picture Missed by Single Alerts

迎 健太

Jul 30, 2026

Why Log Correlation Analysis Matters: Revealing the Complete Attack Picture Missed by Single Alerts

迎 健太

Jul 30, 2026

Why Log Correlation Analysis Matters: Revealing the Complete Attack Picture Missed by Single Alerts

迎 健太

Jul 30, 2026

Why Night and Weekend Security Operations Fail: The Pitfalls of 'Outsourcing Peace of Mind'

迎 健太

Jul 30, 2026

Why Night and Weekend Security Operations Fail: The Pitfalls of 'Outsourcing Peace of Mind'

迎 健太

Jul 30, 2026

Why Night and Weekend Security Operations Fail: The Pitfalls of 'Outsourcing Peace of Mind'

迎 健太

Jul 30, 2026

The Era of the AI Agent SOC: Augmenting Analysts, Not Replacing Them

迎 健太

Jul 30, 2026

The Era of the AI Agent SOC: Augmenting Analysts, Not Replacing Them

迎 健太

Jul 30, 2026

The Era of the AI Agent SOC: Augmenting Analysts, Not Replacing Them

迎 健太

Jan 14, 2026

What is a "Multi-Channel Attack" leading from email to LINE? Latest tactics and countermeasures explained.

迎 健太

Jan 14, 2026

What is a "Multi-Channel Attack" leading from email to LINE? Latest tactics and countermeasures explained.

迎 健太

Jan 14, 2026

What is a "Multi-Channel Attack" leading from email to LINE? Latest tactics and countermeasures explained.

迎 健太

Oct 8, 2025

Why Once-a-Year Lectures Fall Short: Why Security Training Needs "AI Agents"

迎 健太

Oct 8, 2025

Why Once-a-Year Lectures Fall Short: Why Security Training Needs "AI Agents"

迎 健太

Oct 8, 2025

Why Once-a-Year Lectures Fall Short: Why Security Training Needs "AI Agents"

迎 健太

Aug 16, 2025

When Detection Can't Keep Up with LLM-Generated Malware Variants: A Blueprint for Observability and Analysis

迎 健太

Aug 16, 2025

When Detection Can't Keep Up with LLM-Generated Malware Variants: A Blueprint for Observability and Analysis

迎 健太

Aug 16, 2025

When Detection Can't Keep Up with LLM-Generated Malware Variants: A Blueprint for Observability and Analysis

迎 健太

Aug 16, 2025

When Fake Press Conferences Move Stock Prices: Crisis PR and SOC Collaboration Playbook in the Age of Deepfakes

迎 健太

Aug 16, 2025

When Fake Press Conferences Move Stock Prices: Crisis PR and SOC Collaboration Playbook in the Age of Deepfakes

迎 健太

Aug 16, 2025

When Fake Press Conferences Move Stock Prices: Crisis PR and SOC Collaboration Playbook in the Age of Deepfakes

迎 健太

Aug 16, 2025

Protecting Brands from Fake Ads and Social Media Impersonation: A 24/7 Playbook for Japanese Enterprises

迎 健太

Aug 16, 2025

Protecting Brands from Fake Ads and Social Media Impersonation: A 24/7 Playbook for Japanese Enterprises

迎 健太

Aug 16, 2025

Protecting Brands from Fake Ads and Social Media Impersonation: A 24/7 Playbook for Japanese Enterprises

迎 健太

Aug 16, 2025

Spear Phishing in the Generative AI Era: Tailored Fraud Tactics and Defensive Architecture

迎 健太

Aug 16, 2025

Spear Phishing in the Generative AI Era: Tailored Fraud Tactics and Defensive Architecture

迎 健太

Aug 16, 2025

Spear Phishing in the Generative AI Era: Tailored Fraud Tactics and Defensive Architecture

迎 健太

Aug 16, 2025

Executive Voices Cloned in 3 Seconds: AI Voice Scams and "90-Second OOB Verification"

迎 健太

Aug 16, 2025

Executive Voices Cloned in 3 Seconds: AI Voice Scams and "90-Second OOB Verification"

迎 健太

Aug 16, 2025

Executive Voices Cloned in 3 Seconds: AI Voice Scams and "90-Second OOB Verification"

迎 健太

Aug 14, 2025

Practical Guide to Impersonation Defenses: How to Counter Evolving Threats from Social Media, AI Voice Scams, and Spoofed Domains

迎 健太

Aug 14, 2025

Practical Guide to Impersonation Defenses: How to Counter Evolving Threats from Social Media, AI Voice Scams, and Spoofed Domains

迎 健太

Aug 14, 2025

Practical Guide to Impersonation Defenses: How to Counter Evolving Threats from Social Media, AI Voice Scams, and Spoofed Domains

迎 健太

Aug 12, 2025

Why Does Security e-Learning Become Obsolete? Redesigning for 'Behavior-Changing' Education

迎 健太

Aug 12, 2025

Why Does Security e-Learning Become Obsolete? Redesigning for 'Behavior-Changing' Education

迎 健太

Aug 12, 2025

Why Does Security e-Learning Become Obsolete? Redesigning for 'Behavior-Changing' Education

迎 健太

Aug 12, 2025

What is Targeted Email Simulation? Steps, Costs, Measuring Effectiveness, and Preparing for CEO Fraud

迎 健太

Aug 12, 2025

What is Targeted Email Simulation? Steps, Costs, Measuring Effectiveness, and Preparing for CEO Fraud

迎 健太

Aug 12, 2025

What is Targeted Email Simulation? Steps, Costs, Measuring Effectiveness, and Preparing for CEO Fraud

迎 健太

What is SIEM? Mechanism, Functions, Costs, and How to Choose

Aug 5, 2025

What is SIEM? How it Works, Features, Cost, Selection, and Difference from AI SOC

迎 健太

What is SIEM? Mechanism, Functions, Costs, and How to Choose

Aug 5, 2025

What is SIEM? How it Works, Features, Cost, Selection, and Difference from AI SOC

迎 健太

What is SIEM? Mechanism, Functions, Costs, and How to Choose

Aug 5, 2025

What is SIEM? How it Works, Features, Cost, Selection, and Difference from AI SOC

迎 健太

Aug 5, 2025

Brand Defense in the Age of Generative AI: Protecting Corporate Value from Deepfakes and Impersonation

迎 健太

Aug 5, 2025

Brand Defense in the Age of Generative AI: Protecting Corporate Value from Deepfakes and Impersonation

迎 健太

Aug 5, 2025

Brand Defense in the Age of Generative AI: Protecting Corporate Value from Deepfakes and Impersonation

迎 健太

Aug 5, 2025

Social Engineering in the Age of Generative AI: What Defenders Must Do Now

迎 健太

Aug 5, 2025

Social Engineering in the Age of Generative AI: What Defenders Must Do Now

迎 健太

Aug 5, 2025

Social Engineering in the Age of Generative AI: What Defenders Must Do Now

迎 健太