<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
<url>
<loc>https://itdef.net/ja</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja" />
<changefreq>weekly</changefreq>
<priority>1</priority>
</url>
<url>
<loc>https://itdef.net/en</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja" />
<changefreq>weekly</changefreq>
<priority>1</priority>
</url>
<url>
<loc>https://itdef.net/ja/incidents</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/incidents" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/incidents" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/incidents" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/incidents</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/incidents" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/incidents" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/incidents" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/glossary" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/glossary" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/glossary" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/glossary" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/glossary" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/glossary" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/stacks</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/stacks" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/stacks" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/stacks" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/stacks</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/stacks" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/stacks" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/stacks" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/history</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/history" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/history" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/history" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/history</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/history" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/history" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/history" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/learn</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/learn" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/learn" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/learn" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/learn</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/learn" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/learn" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/learn" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/about</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/about" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/about" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/about" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/about</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/about" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/about" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/about" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/contact</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/contact" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/contact" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/contact" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/contact</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/contact" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/contact" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/contact" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/privacy</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/privacy" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/privacy" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/privacy" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/privacy</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/privacy" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/privacy" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/privacy" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/terms</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/terms" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/terms" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/terms" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/terms</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/terms" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/terms" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/terms" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/disclaimer</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/disclaimer" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/disclaimer" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/disclaimer" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/en/disclaimer</loc>
<xhtml:link rel="alternate" hreflang="ja" href="https://itdef.net/ja/disclaimer" />
<xhtml:link rel="alternate" hreflang="en" href="https://itdef.net/en/disclaimer" />
<xhtml:link rel="alternate" hreflang="x-default" href="https://itdef.net/ja/disclaimer" />
<changefreq>monthly</changefreq>
<priority>0.7</priority>
</url>
<url>
<loc>https://itdef.net/ja/incidents/ai-code-api-key-leak</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/incidents/capital-one-ssrf-2019</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/incidents/codecov-supply-chain-2021</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/incidents/equifax-struts-2017</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/incidents/laravel-env-exposure</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/incidents/ai-code-api-key-leak</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/incidents/capital-one-ssrf-2019</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/incidents/codecov-supply-chain-2021</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/incidents/equifax-struts-2017</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/incidents/laravel-env-exposure</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/csrf</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/spf-dkim-dmarc</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/sql-injection</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/xss</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/cve</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/cvss</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/env-file</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/rce</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/glossary/ssrf</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/csrf</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/spf-dkim-dmarc</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/sql-injection</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/xss</loc>
<lastmod>2026-06-08T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/cve</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/cvss</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/env-file</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/rce</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/glossary/ssrf</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/stacks/nextjs-cve-hygiene</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/stacks/shared-hosting-env-protection</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/stacks/nextjs-cve-hygiene</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/stacks/shared-hosting-env-protection</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/history/heartbleed</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/history/log4shell</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/history/xz-utils-backdoor</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/history/heartbleed</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/history/log4shell</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/history/xz-utils-backdoor</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/ja/learn/env-and-api-keys-basics</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>https://itdef.net/en/learn/env-and-api-keys-basics</loc>
<lastmod>2026-06-07T00:00:00.000Z</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
</urlset>
