https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news040.html ＠IT ja OpEd, Opinion 2026-05-21T13:00:00+09:00 AIコーディングツールの利用率、「GitHub Copilot」一強揺らぐ？　「Claude Code」急伸 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/l_ait_260521_jetbrains_aitool1.png https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news047.html ＠IT ja OpEd, Opinion 2026-05-21T13:00:00+09:00 「★3」「★4」のセキュリティ評価制度　ついに“案”から進んだ構築方針とは？ IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/l_tt57375_Image1.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news028.html ＠IT ja OpEd, Opinion 2026-05-21T13:00:00+09:00 沖縄市はGIGAスクール「1万6000台同時通信」の遅延をどう解消した？　“40Gbpsに増強”もコストは3分の1 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/l_ait_a10-okinawashi.png https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news052.html ＠IT ja OpEd, Opinion 2026-05-21T13:00:00+09:00 GitHub、「自組織のセキュリティ態勢の捉え方を変える」無料のスキャン機能を提供開始 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/l_news052_01.png https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news050.html ＠IT ja OpEd, Opinion 2026-05-21T13:00:00+09:00 「AIを使った未検証の報告は単なるノイズ」　GitHubがバグ報奨金制度を厳格化 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/top_news050.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news041.html ＠IT ja OpEd, Opinion 2026-05-21T07:30:00+09:00 攻撃者はEntra IDから本番Azureへどう到達した？　Microsoftが特定した全手口 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/top_news041.png https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news034.html ＠IT ja OpEd, Opinion 2026-05-21T07:00:00+09:00 5週間で340超の企業が被害に　Microsoft 365のアクセスを奪う新型フィッシングに注意 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/top_news034.png https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news006.html ＠IT ja OpEd, Opinion 2026-05-21T05:00:00+09:00 そのランサム被害の原因、本当にVPN？　「6割が侵入経路不明」の今、管理対象を勘違いしないためのポイント IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/l_news006_01.png https://atmarkit.itmedia.co.jp/ait/articles/2605/21/news014.html ＠IT ja OpEd, Opinion 2026-05-21T05:00:00+09:00 Python 3.15で追加されるfrozendictクラスとsentinelクラスってどんなもの？ IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/21/di-hpkawasaki.png https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news056.html ＠IT ja OpEd, Opinion 2026-05-20T13:00:00+09:00 「技術から離れる不安」を乗り越えたITエンジニア　約7割が「管理職になって良かった」と回答 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/l_ait_260520_ki1.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news060.html ＠IT ja OpEd, Opinion 2026-05-20T13:00:00+09:00 「データセンターの土地がない」なら浮けばいい、サーバはついに“移動式”の時代 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/l_ait_datacenter00.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news051.html ＠IT ja OpEd, Opinion 2026-05-20T13:00:00+09:00 Claude Mythosの登場に危機感　政府が新防衛構想「Project YATA-Shield」を始動 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/top_news051.png https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news053.html ＠IT ja OpEd, Opinion 2026-05-20T13:00:00+09:00 「PowerShell」がランサムウェア攻撃に悪用？　正規ツールを“凶器”にする手口と対策 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/l_tt57375_Image1.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news059.html ＠IT ja OpEd, Opinion 2026-05-20T13:00:00+09:00 平均パスワード保有数が168件から120件に初の減少　その裏で起きていること IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/top_news059.png https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news055.html ＠IT ja OpEd, Opinion 2026-05-20T13:00:00+09:00 「無線のAIパラドックス」　8割の組織がWi-Fi投資増額の一方で明らかになった3つの課題 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/top_news055.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news003.html ＠IT ja OpEd, Opinion 2026-05-20T10:00:00+09:00 ネットワークのブラックボックス化が招く致命的な被害とは　有線・無線を一括制御して、トラブル復旧を速める秘策 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/an8258_noumi_260416fortinet_010.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news042.html ＠IT ja OpEd, Opinion 2026-05-20T07:00:00+09:00 Claude Mythosのヤバすぎる実力を検証　脆弱性を連結して攻撃経路を生成 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/top_news042.png https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news015.html ＠IT ja OpEd, Opinion 2026-05-20T05:00:00+09:00 「運用エンジニアは“燃え尽き予備軍”をやめるべし」　PagerDuty会長が語るインシデント対応“進化論” IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/ait_pagerdutyceo_w290.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news007.html ＠IT ja OpEd, Opinion 2026-05-20T05:00:00+09:00 macOSのキッティングは“なめるなキケン”　情シスが知るべきPC管理の本質 IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/kt2487_micro12.jpg https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news006.html ＠IT ja OpEd, Opinion 2026-05-20T05:00:00+09:00 【やさしいデータ分析】ベイズ統計入門 〜 古典的な統計との違いと使い分け IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/di-series.png https://atmarkit.itmedia.co.jp/ait/articles/2605/20/news014.html ＠IT ja OpEd, Opinion 2026-05-20T05:00:00+09:00 無料版Geminiを仕事で使い倒すための設定と注意点、Gmailやドライブ連携で差をつけろ IT,Technology,information technology,news,Computing,Internet,engineer,windows,server,storage,xml,coding,java,database,linux,network,xml,security,design https://image.itmedia.co.jp/ait/articles/2605/20/l_wi-geminisetup01.png