[williamstein]

I've spent a large amount of time fending of bitcoin miners from abusing my site https://cloud.sagemath.com. I like the mathematics and promise of bitcoin, but in practice it is an enormous waste of resources (time, electricity, etc.).

[chmars]

How does the abuse on your site happen?

[IbJacked]

Probably from people wanting to take advantage of free computing power. From their website: Write, compile, and run code in most programming languages ... is a free service ... currently 288 cores, 1.2TB RAM