Is cyber sex forbidden? How is it forbidden, what are the punishments, and rectifications?

Question

As I've been advised, cyber sex (with a jew or goy) is forbidden, but I'm unsure as to what specifically causes it to be forbidden, what the punishments are for performing it, and what rectifications may exist for it. I've been told just because it's not subject to Karet doesn't mean it's okay, but I don't know specifically how "not okay" it is.

As a summary, from wikipedia:

Cybersex, also called computer sex, Internet sex, netsex, e-sex and, colloquially, cyber or cybering, is a virtual sex encounter in which two or more people have long distance sex via electronic video communication (webcams, VR headsets, etc) and other electronics (such as teledildonics) connected to a computer network.

Cybersex can also mean sending each other sexually explicit messages without having sex, and simply describing a sexual experience (also known as "sexting") Cybersex is a sub-type of technology-mediated sexual interactions.In one form, this is accomplished by the participants describing their actions and responding to their chat partners in a mostly written form designed to stimulate their own sexual feelings and fantasies. Cybersex often includes real life masturbation.

As you can see, this does not have to involve pornography at all, but is more a form of highly promiscuous behaviour taking place over long distance and not face-to-face.

Answer 1

Yes, it is all forbidden. It falls under the general prohibitions enumerated in Chapter 18 of VaYikra.

Some of the most germane posukim are:

You shall not copy the practices of the land of Egypt where you dwelt, or of the land of Canaan to which I am taking you; nor shall you follow their laws.

None of you men shall come near anyone of his own flesh to uncover nakedness: I am יהוה.

Coming near includes even with words, texts, or any other type of electronic communication.

Do not allow any of your offspring to be offered up to Molech, and do not profane the name of your God: I am יהוה.

Among other things, "offering your offspring to Molech" means any type of activity which encourages and stimulates sexual arousal which will potentially result in wasting of seed solely for the purpose of sexual gratification.

Do not defile yourselves in any of those ways, for it is by such that the nations that I am casting out before you defiled themselves.

But you must keep My laws and My rules, and you must not do any of those abhorrent things, neither the citizen nor the stranger who resides among you; for all those abhorrent things were done by the people who were in the land before you, and the land became defiled.

All who do any of those abhorrent things—such persons shall be cut off from their people. You shall keep My charge not to engage in any of the abhorrent practices that were carried on before you, and you shall not defile yourselves through them: I יהוה am your God.

All of these types of behavior are referred to as Abhorrent תועבה.

Like the last sentence quoted above, all who do any of these things shall be cut off.

נכרתו הנפשות העשת מקרב עמם

Regarding the much broader subject of: What are the Tikkunim for this? The first step is simply to stop the behavior.

What particular tikkunim would be relevant to the individual, spiritually, would be better directed to their local Orthodox Rabbi and their personal spiritual counselor, called a Mashpia.