Get to know # Kaoru Hayashi *** ** * ** *** Blogs by Kaoru Hayashi Sort By: Recent Recent Popular *** ** * ** *** [![サイバー防術のススメ](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2024/02/AdobeStock_645923878.jpeg)](https://www2.paloaltonetworks.com/blog/2024/03/cyber-bojutsu/?lang=ja) ## [CSO Perspective](https://www.paloaltonetworks.com/blog/category/cso-perspective-ja/?lang=ja&ts=markdown), [Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [サイバー防術のススメ](https://www2.paloaltonetworks.com/blog/2024/03/cyber-bojutsu/?lang=ja) 私たちは年次統計から攻撃情報速報までさまざまなレベルの脅威インテリジェンスをSNS、ブログ、ホワイトペーパー、動画、ポッドキャストでコミュニティと共有しています。「サイバー防術」ビデオシリーズも脅威インテリジェンス共有活動の1つです。 Mar 14, 2024 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![2023年の脅威動向ふりかえり](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2020/12/image-of-past-and-future-1.jpg)](https://www2.paloaltonetworks.com/blog/2023/12/security-landscape-in-2023/?lang=ja) ## [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [2023年の脅威動向ふりかえり](https://www2.paloaltonetworks.com/blog/2023/12/security-landscape-in-2023/?lang=ja) 2023年の脅威動向をふりかえり、今後の増加が危ぶまれる攻撃手法と必要な対策を検討します。 Dec 10, 2023 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![企業がAI活用時に考慮すべきセキュリティリスク](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/07/blog-thumbnail.jpeg)](https://www2.paloaltonetworks.com/blog/2023/10/enterprise-risks-of-ai-system/?lang=ja) ## [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [企業がAI活用時に考慮すべきセキュリティリスク](https://www2.paloaltonetworks.com/blog/2023/10/enterprise-risks-of-ai-system/?lang=ja) 生成AIを含むAI技術のビジネス利用が急増し弊社の簡易アンケートでも利用経験者が85%以上です。そこで気になるのがセキュリティリスク。AI技術を3つのユースケースに大別し、それぞれのリスクをまとめました。 Oct 09, 2023 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![脆弱性悪用攻撃はなぜ減らない?](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/08/GettyImages-1073009100-edit.jpg)](https://www2.paloaltonetworks.com/blog/2023/09/mitigating-software-vuln-exploit/?lang=ja) ## [CIO/CISO](https://www.paloaltonetworks.com/blog/category/ciociso-ja/?lang=ja&ts=markdown), [CSO Perspective](https://www.paloaltonetworks.com/blog/category/cso-perspective-ja/?lang=ja&ts=markdown), [Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [脆弱性悪用攻撃はなぜ減らない?](https://www2.paloaltonetworks.com/blog/2023/09/mitigating-software-vuln-exploit/?lang=ja) 何年も前に修正プログラムが公開されている脆弱性を突かれて発生するセキュリティインシデントが後を絶ちませんが、それには大きく 3 つ理由があります。 Sep 14, 2023 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![AIを利用した早期発見能力の構築](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/04/Woman-Inspecting.jpg)](https://www2.paloaltonetworks.com/blog/2023/07/necessary-for-anomly-detection/?lang=ja) ## [Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [AIを利用した早期発見能力の構築](https://www2.paloaltonetworks.com/blog/2023/07/necessary-for-anomly-detection/?lang=ja) 攻撃者は侵入後、検知を回避して短時間で目的を達成しようとします。では防御側がいち早く攻撃を捕捉するにはどうすればよいでしょうか? 攻撃の初期段階で見られる「予兆」をAIを活用した3つのステップ「データ」「相関」「学習・分析」で捕捉する方法を解説します。 Jul 10, 2023 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** Load more *** ** * ** *** Blogs by Kaoru Hayashi Sort By: Popular Popular Recent *** ** * ** *** [![2023年の脅威動向ふりかえり](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2020/12/image-of-past-and-future-1.jpg)](https://www2.paloaltonetworks.com/blog/2023/12/security-landscape-in-2023/?lang=ja) ## [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [2023年の脅威動向ふりかえり](https://www2.paloaltonetworks.com/blog/2023/12/security-landscape-in-2023/?lang=ja) 2023年の脅威動向をふりかえり、今後の増加が危ぶまれる攻撃手法と必要な対策を検討します。 Dec 10, 2023 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![未知の脅威への対策はなぜ必要か](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2020/04/image.png)](https://www2.paloaltonetworks.com/blog/2020/05/why-we-need-to-prevent-unknown-malware/?lang=ja) ## [Secure the Cloud](https://www.paloaltonetworks.com/blog/category/secure-the-cloud-2/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown) ### [未知の脅威への対策はなぜ必要か](https://www2.paloaltonetworks.com/blog/2020/05/why-we-need-to-prevent-unknown-malware/?lang=ja) はじめに サイバー攻撃とその対処は何度も繰り返すことから「いたちごっこ」と揶揄されています。語源は江戸時代 May 06, 2020 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![2020年の振り返りと2021年の国内の脅威予測](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2020/12/image-of-past-and-future-1.jpg)](https://www2.paloaltonetworks.com/blog/2020/12/threat-landscape-observed-in-2020-and-predictions-for-2021/?lang=ja) ## [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown) ### [2020年の振り返りと2021年の国内の脅威予測](https://www2.paloaltonetworks.com/blog/2020/12/threat-landscape-observed-in-2020-and-predictions-for-2021/?lang=ja) 2020年は世界中が新型コロナウイルス感染症という未曾有の危機に直面しました。コロナ禍にあってもサイバー攻撃が止むことはなく、多くの企業や組織が対策に追われました。2020年に発生したサイバー攻撃をデータから振り返り来年以降注意すべき脅威を予測します。 Dec 13, 2020 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** [![セキュリティ投資の効果を抑制する10のアンチパターン](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2019/08/tco-.jpg)](https://www2.paloaltonetworks.com/blog/2020/01/ten-anti-patterns-which-impair-security-investment-effect/?lang=ja) ## [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown) ### [セキュリティ投資の効果を抑制する10のアンチパターン](https://www2.paloaltonetworks.com/blog/2020/01/ten-anti-patterns-which-impair-security-investment-effect/?lang=ja) 概要 企業はセキュリティに対する投資を行っていますが、果たしてそれは効果的に行われているのでしょうか？残念 Jan 23, 2020 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") and [Rumi Horio](https://www.paloaltonetworks.com/blog/author/rhorio/?lang=ja&ts=markdown "Posts by Rumi Horio") *** ** * ** *** [](https://www2.paloaltonetworks.com/blog/2021/06/3-inconvenient-truths-about-ransomware-that-orgs-should-deal-with/?lang=ja) ## [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown) ### [ランサムウェアによって企業が直面する３つの不都合な真実...](https://www2.paloaltonetworks.com/blog/2021/06/3-inconvenient-truths-about-ransomware-that-orgs-should-deal-with/?lang=ja) 不特定多数を狙うばらまき型から標的型へ変化したランサムウェア攻撃。変化がもたらしたのは身代金と事業継続リスクの高まりだけではありません。最近公開された『2021 Unit 42ランサムウェア脅威レポート』のデータと最近の被害事例から企業が直面している3つの課題を考えます。 Jun 01, 2021 By [Kaoru Hayashi](https://www.paloaltonetworks.com/blog/author/khayashi/?lang=ja&ts=markdown "Posts by Kaoru Hayashi") *** ** * ** *** Load more {#footer} {#footer} ## 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