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ProtonVPN uses AES-256 encryption, the key change is done with 4096-bit RSA, and HMAC with SHA384 is used for message authentication. Along with the Full-Desk encryption that was announced in 2020, this encryption prevents attacks, especially those that can come from high-risk countries.

Yes, and their free version is available for all users worldwide, but with some limitations; it can be used only for one device, and connects to three servers only. In terms of speed, it is medium and does not support the Secure Core feature.

It depends on the plan you choose, the free VPN supports one device, the Basic subscription supports 2 devices, the Plus subscription supports 5 devices, and the Visionary subscription supports up to 10 devices.

For Plus and Visionary subscriptions, we say yes they unblock Netflix libraries and Hulu. However, free and Basic plans do not unblock them.

This kind of attacks must not be taken easily because the attacker takes place in the connection between a user and the server, which puts the attacker directly in connection with the victimized user. As a result, the attacker can reach and use all messages, conversations, online activity, web browsing, and more.  

ProtonVPN launched ProtonMail in 2014 to provide decent privacy for internet users in general, especially people at-risk, including journalists and democracy activists. The app had great popularity in no time, and now it is available and free for users worldwide.