[achillean]

And there are still 4,000+ servers running it publicly:

https://www.shodan.io/report/ohcbBDbi

For comparison: finger[1] is more common on the Internet than Apache Cassandra[2].

[1] https://www.shodan.io/search?query=port%3A79+idle

[2] https://www.shodan.io/search?query=product%3Acassandra