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The hackers say they will expose Trump’s “financial and personal ties with Russian mobsters” among other shady dealings.

Anonymous tweeted to their 154k followers: ”You have financial and personal ties with Russian mobsters, child traffickers, and money launderers.

"This isn't the 80's any longer, information doesn't vanish, it is all out there. You are going to regret the next 4 years."

There is no evidence provided by Anonymous and no detail on how the information will be released.

(Image: GETTY) (Image: TWITTER)

President-elect Trump is set to be sworn in on Friday.

This is not the first time Anonymous has targeted Trump.

In March 2016, it declared war on the presidential candidate – threatening to shut down his websites and expose fresh allegations.

It then claimed to have leaked his phone number and social security number on website Pastern, urging followers to begin investigations into Trump.

In a video, Anonymous called on "every able person with a computer" to join #OpTrump, with the aim of dismantling his campaign and sabotaging his brand.

Anonymous have also targeted high profile organisations ISIS, the Vatican, Mastercard, VISA and Paypal.