描述
此插件已于 2017 年 12 月 22 日 关闭，无法下载。 此关闭是永久的。 原因：安全问题。
评价
2019 年 7 月 8 日
Works as promised, no bugs. I like the arithmetic option!
2019 年 4 月 2 日
buenísimo
2018 年 5 月 21 日
Great plugin, but unfortunately it had a backdoor for an attacker accordingly to the link https://www.wordfence.com/blog/2017/12/backdoor-captcha-plugin/. For this reason, the plugin was marked as "This plugin has been closed for new installs". The cited site says that the backdoor is present in all versions bellow of 4.4.5 version. Anyway, the cited site recommends the uninstalling of this plugin.
2018 年 4 月 19 日
If you can do basic math, you can log in or register. Eliminated bot registration.
2018 年 3 月 27 日
For me this is a great plugin to protect my site against hackers and intruders
2018 年 2 月 15 日
it`s a best plugin for captcha
