2 things.

Totally understandable, and Databricks no doubt imo has the best security out there compared to these other alternative services.

Whether hackers/miners use the Free service or not, CE only offers micro-clusters which we all know is not enough to do big data analysis (which in real often is more resource intensive than hashing/mining) so that itself will definitely make the hackers/miners sad and tired of not being able to get faster rate/speed to mine with, so bitcoin is out of the question itself that way, as CE doesn't offer GPU so yes that itself keeps the hackers away if you think about it, about the 'attacks' you are talking about, i think it's minimal?! because usual data operation like i said require more resource than what the micro-clusters in the CE even provide and is limited.

So about the maintenance thing, i think it's a good idea to keep the systems in-check.

Although, another question rises is does it affect Databricks in any way as of now with these 'attacks' going on (which like i said wont be for long as CE doesn't offer GPU or even high end CPU with the micro cluster to mine with..)

Because since the last 2-3 years of my time with DB i have never seen it go down, maybe only this time and there was another one last month or so which was back up in hours.. again, totally understandable for free CE users.

Question, is Databricks going to remain free or be forced to shut down CE due to this?

That way a lot of students like myself who use CE will be affected and would take the company reputation down as well i think, thoughts? @Joseph Kambourakis​ 

Thank you for clearing a lot of stuff, btw, have a nice day/night ahead.