"The same thing-period no space-occurred later and it didn't happen", Giuliani added, apparently unaware that.in is a top-level domain made available for global use and maintained by the Indian government, or how hyperlinks work in general. The Atlanta-based digital marketing director said he "knew immediately that it was just a typo", but he clicked on the link anyway - quickly realizing the domain was unregistered. If, however, someone were to remove the space after a period and follow that with random letters or words that aren't assigned to a top-level domain, Twitter won't automatically convert that into a link.
To bolster his argument, Giuliani noted that his second "period no space" error ("Helsinki.Either") didn't generate a link. "Don't tell me they are not committed card-carrying anti-Trumpers", he said, finishing his tweet with an all-caps plea for "fairness please".
Social media users widely mocked Giuliani as a cybersecurity advisor to the president, for his apparent lack of technical knowledge.
In a tweet Tuesday, Giuliani said the social network had "allowed someone to invade my text with a disgusting anti-President message".
While he now works as a legal advisor to the White House, Trump originally brought Giuliani in as a cybersecurity advisor.
The tweet was well reported by the media but Giuliani's return to the topic has only fueled visits to the site, TechCrunch reported.
A Twitter spokesman says the company can't edit users' tweets and "the accusation that we're artificially injecting something into a tweet is completely false".
"He could have deleted it and everyone would have forgotten about it; my tweet would have stopped going viral", he said.
It would be the simplest option, but as of Thursday Mr Giuliani's tweet - which has been liked more than 47,000 times and retweeted more than 17,000 times - is still up. "Either I affect what his message is, or I affect what his message is".
Velazquez told the Post that Giuliani's accusatory follow-up tweet "speaks to the impulsive nature of the administration where they're not thoughtful in anything they put out there, especially on Twitter".