Rudy Giuliani, who was named President Trump’s cybersecurity advisor last year, demonstrated on Tuesday that he does not understand how Twitter works...or hyperlinks...or domain registration.

Giuliani tweeted that Twitter had allowed someone to “invade” a tweet he sent on November 30, because that tweet linked to a website with the words “Donald J. Trump is a traitor to our country.”

However, the reason the text linked to the site was due to a typo in Giuliani’s original tweet. He forgot to include a space after the period of “G-20,” and the next word “in” happens to be the top-level domain for India. Shortly after, an anonymous (and quick-thinking) user bought the domain G-20.in, according to WhoIs records.

This individual then launched the site with the anti-Trump message:

But rather than recognizing this rather clever own, Giuliani has instead blamed Twitter, claiming the site is run by “committed cardcarrying anti-Trumpers.”