Online threats of causing physical injury or harassment can be intimidating, and is considered a crime. For example, if someone messages you on Facebook that they will beat you up, it is considered a threat of physical injury. You can approach the relevant authorities, and file a complaint.
In legal terms, this is called criminal intimidation, and it is punishable with jail time up to two years or a fine or both.1
- Section 506, The Indian Penal Code. [↩]