He did only after I publicly called him out[0]. And it is still plagiarism.

“Plagiarism is the "wrongful appropriation" and "stealing and publication" of another author's "language, thoughts, ideas, or expressions" and the representation of them as one's own original work.”[1]

[0] https://twitter.com/Edu4rdSHL/status/1081971696431706113

[1] https://en.m.wikipedia.org/wiki/Plagiarism

And the other parts of the post are copied verbatim from the MTProto paper.

Check out the "MTProto is not IND-CCA secure" section Eduard Toloza supposedly wrote: https://gitlab.com/edu4rdshl/blog/blob/9d490385d53cdf7048d16...

> Here I briefly present the two attacks that show that MTProto is not IND-CCA secure. We assume the reader to be familiar with the notion of IND-CCA security...

> Once again, I stress that the attacks are only of theoretical nature and we do not see a way of turning them into full-plaintext recovery. Yet, we believe that these attacks are yet another proof [https://eprint.iacr.org/2015/428.pdf] that designing your own crypto rarely is a good idea.

And compare it to Jakob Jakobsen and Claudio Orlandi's paper: https://eprint.iacr.org/2015/1177.pdf

The "author" just swapped out the "we" for "I". Aside from the text in bold at the bottom, there's no original content. It's plagiarism.