Today we are introducing the second actor in this series, Prolific Puma. For four years, maybe longer, Prolific Puma has operated in the shadows, unrecognized by defenders. While we don’t know their origin story, we can detect Prolific Puma through DNS and get a glimpse into their character via their domain name registration choices. What’s in the name? Prolific comes from the simple fact that this is a network that is continually expanding, with new domains registered almost daily. As for Puma, well… we’ll share more about the inspiration later in this paper.

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