2月16号突然发现有个Github仓库不见了，觉得很奇怪，后面打开gmail一看才知道，2月14号情人节那天，github已经发邮件说DMCA有侵权情况(被一本书的作者提DMCA投诉侵权了)，由于当时没看邮件，超过24小时仓库已经被disable....，打开仓库链接一看已经被封了。
邮件内容如下：
安志合 Feb 14, 2022, 9:29 PM UTC Hi 安志合, I'm contacting you on behalf of GitHub because we've received a DMCA takedown notice regarding the following content: https://github.com/anzhihe/Free-Docker-Books/blob/master/book/Docker%20-%20Up%20%26%20Running.pdf We're giving you 1 business day to make the changes identified in the following notice: https://github.zendesk.com/attachments/token/Suc6O7wqcfC9kHd8BtikxnjAa/?name=2022-02-08-docker-up-and-running.rtf If you need to remove specific content from your repository, simply making the repository private or deleting it via a commit won't resolve the alleged infringement. Instead, you must follow these instructions to remove the content from your repository's history, even if you don't think it's sensitive: https://docs.github.com/articles/remove-sensitive-data Once you've made changes, please reply to this message and let us know. If you don't tell us that you've made changes within the next 1 business day, we'll need to disable the entire repository according to our GitHub DMCA Takedown Policy: https://docs.github.com/articles/dmca-takedown-policy/ If you believe your content on GitHub was mistakenly disabled by a DMCA takedown request, you have the right to contest the takedown by submitting a counter notice, as described in our DMCA Takedown Policy. PLEASE NOTE: It is important that you reply to this message within 1 business day to tell us whether you've made changes. If you do not, the repository will be disabled.
这是15号发邮件仓库封禁的邮件：
Hello, We received a DMCA takedown notice regarding your repository anzhihe/Free-Docker-Books. As such, we have disabled public access to the repository. The notice has been publicly posted at: https://github.com/github/dmca/blob/master/2022/02/2022-02-08-docker-up-and-running.md If you believe that your repository was disabled as a result of mistake or misidentification, you have the right to file a counter notice and have the repository reinstated. Our help articles provide more details about how the DMCA notice-and-takedown process works at GitHub and how to file a counter notice with us if you choose: https://docs.github.com/articles/dmca-takedown-policy https://docs.github.com/articles/guide-to-submitting-a-dmca-counter-notice If you have any questions about the process or the risks in filing a counter notice, we suggest that you consult with a lawyer. Thanks, The GitHub Team
关于什么是DMCA，查了下wikipedia：https://zh.wikipedia.org/zh-hans/%E6%95%B8%E5%AD%97%E5%8D%83%E5%B9%B4%E7%89%88%E6%AC%8A%E6%B3%95
阮神的一篇关于DMCA的文章：http://www.ruanyifeng.com/blog/2010/03/dmca.html
网上也查了下有没有挽救的办法，但是看完后感觉仓库找回来的希望比较渺茫：
感觉也就发邮件说明情况，请求再给一次窗口期删除侵权文件可能还有点希望
，没办法了，打开google翻译开始写邮件。由于美国与国内的时差在12小时左右，回一封邮件基本过一天了！
Hello, I didn't see the reminder email yesterday, I didn't intend to infringe the relevant copyrights, I applied to unblock the warehouse and promised to delete the relevant content, Please help me thank you! The repository address is: https://github.com/anzhihe/Free-Docker-Books
对方回一封邮件，然后我又回复解释了一下，然后请求再给一次窗口期：
Hello, Thanks for your reminder and reply，Yesterday was Valentine's Day and I didn't pay attention to emails, I didn't intend to infringe the relevant copyrights，but now i can't open the warehouse to delete the infringing file, Can you give me another 24 hours to delete the infringing file. I have no other way,thank you so much! The repository address is: https://github.com/anzhihe/Free-Docker-Books
然后等了一天没消息了，17号我又去提了个ticket，请求他们帮忙删除。https://support.github.com/request
Thank you for contacting GitHub Support. We wanted to let you know that we've received your message. We are experiencing high volumes and therefore, you may experience longer than normal wait times. In the meantime, you may find answers to commonly asked questions in our community forum or in our documentation. View or update your ticket here: Ticket 1506185 If you have any additional information or would like to add anything to your initial message, now would be a great time to do so, feel free to reply to this email. If not, then rest assured your request is in the right hands :) Thank you! The GitHub Support Team
不过对方应该看到了，但是直接给我关闭了:(
18号早上终于收到回复的邮件了，再给一个24小时窗口期删除，最后的机会，让我确认好时间回复邮件。
GitHub Trust & Safety (GitHub Support) Feb 17, 2022, 11:26 PM UTC Hi 安志合, Thanks for writing in. Since you missed your initial window, we’ll allow you one additional business day to make changes, as per our Policy (https://help.github.com/articles/dmca-takedown-policy/). This would be your last chance to do so. Let us know when you're ready for that window to begin, and we'll re-enable your repo for a period of 1 business day for you to make the requested changes. Regards, GitHub Trust & Safety -------------- 果断回复并致谢:) Hi, I have time to deal with it now, please help to re-enable the repo，I will immediately remove the infringing content.Thanks a lot！ The repository address is: https://github.com/anzhihe/Free-Docker-Books Regards,
回了邮件之后就周末了，不过之后一直没解封，也没回邮件，于是每天回一封邮件，又提了个ticket，到了23号终于收到回复邮件了，并给了怎么删除文件的链接。
Hi 安志合, Thanks for writing in. Since you missed your initial window, we’ll allow you one additional business day to make changes, as per our Policy (https://docs.github.com/en/github/site-policy/dmca-takedown-policy). This will be your last chance to do so. Please see the takedown notice (https://github.com/github/dmca/blob/master/2022/02/2022-02-08-docker-up-and-running.md) for the complainant’s requested changes. To permanently remove the reported content from your repository’s history, you will need to follow these instructions: https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/removing-sensitive-data-from-a-repository Once you’ve made the requested changes, please let us know by responding to this email, so we can let the complainant know the requested changes have been made. If we don’t hear from you, we will re-disable your repository around this time tomorrow. Please let us know if you have any questions or need any help removing the content. Regards, GitHub Trust & Safety
接下来就是把文件从仓库和之前提交纪录里都移除，首先下载bfg这个工具，然后按照文档操作就行了，Removing sensitive data from a repository，先clone下来仓库，进入仓库然后执行下边命令：
// 强制清除侵权文件 java -jar ~/Desktop/bfg-1.14.0.jar --delete-files 'Docker - Up & Running.pdf' --no-blob-protection // 执行垃圾回收 git reflog expire --expire=now --all && git gc --prune=now --aggressive // 将数据推送到远端即可（需要关闭 GitHub 上仓库设置里面对强制推送的防护）,Setting → Branches → Add rules → Allow force pushes git push -f origin master
之后回邮件告知github已经处理完毕，仓库终于就找回来了！
个人反思：
经过这次亲身经历的事件后，意识到版权意识还是很重要的，也是很有必要的。国内很少有这方面的宣传和教育，感觉也没有真正的全面执行，从小时候买盗版书，盗版碟，到用盗版软件，很惭愧啊。身边人很少真正有版权意识，或者知道也不当回事！知识版本对创作者是保护，也是鼓励，更是对创新的保护和鼓励。真正执行起来其实是双赢。如果创作者辛苦工作的劳动果实随意被偷窃和践卖，会大大打击积极性，后面也不会有好的东西贡献出来了。
被上了一课，以后还是养成为知识版权付费的习惯，拒绝盗版，其实用正版成本更低，使用更丝滑，同时还能享受到更优质的售后服务，安全又可靠。希望国内保护知识版权的执法力度能落实到位。同时感谢Google技术支持团队的帮助，不仅专业还挺有人性化。
