Finding hidden links in text

Question

Algorithms

Hello!

Spammers use various ways of writing links in the text to pass filters, for example:

vkcom
vk7com
vk.c*om

Is there any more or less universal solution for finding such links in the text?

Answer 1

1) We take a Russian dictionary + an English dictionary. 2) We remove dictionary words from the text 3) We glue what is left.
Naturally, the dictionary will have to be supplemented with typos, neologisms, foul language, etc.

Answer 2

Spammer database, manual moderation, regular games, captcha.