Many countries are involved in these activities. We know a lot about only a few of them. Iran is an emerging example. There was just an incident in the United States where a group of Iranian hackers hacked the Trump campaign and obtained and released sensitive information about the vice-presidential nominee. Iran has shifted to have information and influence activities, against the United States and others, to be a greater and greater portion of its digital operations.
On October 1st, 2024. See this statement in context.