I assume when doing active probes, you'd want to match the fingerprint of the most common tool for plausible deniability. I also highly suspect that this predat

I assume when doing active probes, you'd want to match the fingerprint of the most common tool for plausible deniability. I also highly suspect that this predates open source alternatives like masscan and zmap. Performance isn't a concern because they are using lots of other peoples infrastructure.