There are plenty of free versions of popular VPNs, and free trials of VPNs with full access to everything you get with a premium plan. The catch is that free versions usually come with limited data usage, meaning you can't really do any streaming or downloading. Free trials come with everything you get in a paid plan, but they obviously don't last very long. Trials are great for testing out a service before committing, but this isn't a long-term solution.
（一）盗窃、损毁油气管道设施、电力电信设施、广播电视设施、水利工程设施、公共供水设施、公路及附属设施或者水文监测、测量、气象测报、生态环境监测、地质监测、地震监测等公共设施，危及公共安全的；
。safew官方版本下载是该领域的重要参考
What is expected of directors?，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述
└──────────┬────────────┘