Backup diff of LetsEncrypt vs current(No. 1)

• Backup list
• View the diff.
• View the diff current.
• View the source.
• View the backup.
• Go to LetsEncrypt.

• https://letsencrypt.org/docs/client-options/
• https://letsencrypt.readthedocs.io/en/latest/using.html#dns-plugins

• Let’s EncryptのSSL証明書で、安全なウェブサイトを公開
  • https://knowledge.sakura.ad.jp/5573/
• Let's Encrypt (certbot) でワイルドカード証明書できた！
  • https://qiita.com/chamaharun/items/566c78bb8a13b4c2bc16

不具合

• Let's Encrypt に重大なバグが発覚。該当サイトは2020/3/4 までに対応が必須
  • https://qiita.com/matsumoto_sp/items/e8e035a6f27c52ee5ede
  • バグの詳細
    • https://community.letsencrypt.org/t/2020-02-29-caa-rechecking-bug/114591
  • 3/4 に問題のある証明書を失効させるお知らせと、Q & A
    • https://community.letsencrypt.org/t/revoking-certain-certificates-on-march-4/114864

• はてなブログのHTTPS化実施に伴い, Let's Encryptへの寄付を実施しました
  • http://developer.hatenastaff.com/entry/2018/06/04/140000

• SSL/TLS証明書無料化は進むか？ ～Let's Encryptに見る無料SSL/TLS証明書の台頭とその注意点～
  • https://jp.globalsign.com/blog/2016/freessltls_letsencrypt.html