Webinar Announcement: Ransomware Targeting External IT Assets – How to Implement Inventory, Diagnosis, and Continuous Monitoring
GMO Cybersecurity by Ierae will host a webinar on Attack Surface Management (ASM). The session will cover METI's ASM implementation guidance and introduce a domestic ASM tool to combat the rising threat of ransomware.
📋 Article Processing Timeline
- 📰 Published: May 26, 2026 at 18:00
- 🔍 Collected: May 26, 2026 at 09:31
- 🤖 AI Analyzed: May 26, 2026 at 10:22 (50 min after Collected)
As digital technology spreads rapidly, the reliance on internet and cloud services has expanded the 'attack surface' available to cybercriminals. Ransomware attacks, in particular, have seen a sharp rise. According to the National Police Agency, more than 80% of infection routes involve intrusions through VPNs or remote desktop devices.
Attackers begin by scouting externally facing IT assets and identifying vulnerabilities to exploit. Often, websites launched by business departments without IT oversight (shadow IT) remain unmanaged and poorly secured, becoming prime targets. Large corporations with multiple subsidiaries find it particularly challenging to maintain a complete and up-to-date inventory of their digital assets.
This webinar focuses on Attack Surface Management (ASM) as a critical solution. We will explain the core concepts and case studies based on the 'ASM Implementation Guidance' published by the Ministry of Economy, Trade and Industry (METI) in 2023. Additionally, we will introduce 'Net-de-Shindan ASM,' a domestic tool characterized by its ease of use and cost-effectiveness.
[Webinar Overview]
Topic: Ransomware Targeting External IT Assets – Inventory, Diagnosis, and Continuous Monitoring.
Host: GMO Cybersecurity by Ierae Inc.
Cooperation: Majisemi Inc.
Attackers begin by scouting externally facing IT assets and identifying vulnerabilities to exploit. Often, websites launched by business departments without IT oversight (shadow IT) remain unmanaged and poorly secured, becoming prime targets. Large corporations with multiple subsidiaries find it particularly challenging to maintain a complete and up-to-date inventory of their digital assets.
This webinar focuses on Attack Surface Management (ASM) as a critical solution. We will explain the core concepts and case studies based on the 'ASM Implementation Guidance' published by the Ministry of Economy, Trade and Industry (METI) in 2023. Additionally, we will introduce 'Net-de-Shindan ASM,' a domestic tool characterized by its ease of use and cost-effectiveness.
[Webinar Overview]
Topic: Ransomware Targeting External IT Assets – Inventory, Diagnosis, and Continuous Monitoring.
Host: GMO Cybersecurity by Ierae Inc.
Cooperation: Majisemi Inc.
FAQ
このウェビナーの主なテーマは何ですか？
外部公開されているIT資産（アタックサーフェース）を狙うランサムウェア攻撃への対策と、ASM（Attack Surface Management）の導入・活用方法が主なテーマです。
ASM（Attack Surface Management）とは何ですか？
インターネットからアクセス可能な外部公開IT資産を特定し、脆弱性などの弱点を継続的かつ定期的に把握・管理する手法のことです。
ランサムウェアの主な感染経路は何ですか？
警察庁の調査によると、被害企業の8割以上がVPNやリモートデスクトップ用の機器からの侵入を占めており、外部公開資産の脆弱性が狙われています。
セミナーで紹介される「ネットde診断 ASM」の特徴は何ですか？
国産ツールならではの使いやすさと導入しやすい価格帯が特徴で、大量のサイトや子会社・グループ会社のIT資産管理に課題を持つ組織に適しています。
経済産業省が公開したASM関連の資料は何ですか？
2023年に公開された「ASM（Attack Surface Management）導入ガイダンス～外部から把握出来る情報を用いて自組織のIT資産を発見し管理する～」です。