What I would do is this:
-Look up where the spammer lives
-Look up what's the name of the secret service there
Then reply something along the lines of:
Good luck explaining this to the FSB, %[name]%
Or:
удачи, объясняя это к ФСБ, %[name]%
(and hope that the google translation is sloppy as well)
Now since he probably didn't understand your article, he'll realize that he made a huge mistake by randomly commenting and will never do it again :)