This man's harassment was so vile Twitter was forced to ban him in a groundbreaking move.

You may have forgotten by now but at the end of 2015, Martin Shkreli became one of the most universally disliked men on the planet by attempting to profit from AIDS-fighting medication.

Just a couple of months later the former pharmaceutical executive was also charged with unrelated fraud offences.

In case further proof was required that the 33-year-old is a creep-and-a-half, his Twitter account was suspended yesterday after he relentlessly trolled an award-winning writer from Teen Vogue.

Let us explain.

Last month, journalist Lauren Duca penned a scorching opinion piece claiming that president-elect Donald Trump was 'gaslighting' the American public. (If you haven't read it, it's very good.)

She then found herself in a heated exchange about it and her subsequent comments on Ivanka Trump with Fox News anchor Tucker Carlson, who told her to "stick to the thigh-high boots. You’re better at that."

The outspoken feminist has since been trolled relentlessly on social media by Trump supporters, including Shkreli who contacted her on Twitter last week to invite her as his date to the upcoming inauguration.

I would rather eat my own organs pic.twitter.com/IgeCRZqk8w

— Lauren Duca (@laurenduca) January 5, 2017

"I would rather eat my own organs," she replied, posting a screen shot of his direct message for her 138,000 followers.

Apparently refusing to TAKE THE HINT, Shkreli then updated his Twitter bio to say he had "a small crush on @laurenduca".

He also doctored an image of Duca with her husband to include his own face and made his banner a collage of pictures of her with lyrics from John Michael Montgomery's 1994 single "I Swear".

"How is this allowed?" she asked the Twitterverse, again sharing screen shots of what she described as "targeted harassment".

How is this allowed @jack pic.twitter.com/Wof8MlYHTL

— Lauren Duca (@laurenduca) January 8, 2017

"I don’t know how could this could possibly be allowed because this is an act of targeted harassment," she told Buzzfeed News.

"I know Twitter is struggling to figure out what makes the most sense [with its user guidelines]…but this is an entire profile dedicated to upsetting me."

As Duca's fans hit out at Shkreli, his began to fight back while he posted several more pointed jibes at the former Huffington Post writer.

In one direct reply he wrote: "dont [sic] disrespect the sovereignty of my love for you. your [sic] being unfair."

According to New York Magazine, Duca - and others - contacted Twitter CEO Jack Dorsey directly asking him to intervene.

Shkreli's account was subsequently suspended, though it's not clear how long the ban will last.

"He’s an entitled creep and absolutely deserves to have his account suspended —perhaps indefinitely," she told Buzzfeed News.

"I think Martin should know that under no circumstances would I touch him with a 10-foot pole.

"It has nothing to do with Donald Trump, but with the fact that he has committed an act of pharmaceutical terrorism."

Duca: 1, Shkreli: 0