[ufmace]

The article here is basically PR from the Tor project. I suspect most reader here would find this relatively high-level technical analysis of the attack more interesting:

https://delroth.net/posts/spoofed-mass-scan-abuse/

[elashri]

Discussed on HN when it came out.

https://news.ycombinator.com/item?id=41982698

[oomem]

This analysis is discussed and linked in the article.