Former New York City Mayor Rudy Giuliani is joining the law and lobby firm Greenberg Traurig, where he will serve as the global chair of its cybersecurity and crisis management practice in New York, the firm announced on Tuesday. 

The Republican comes from Bracewell & Giuliani, a Texas-based law and lobby firm where he set up a New York City outpost in 2005. He expanded the office from four people to 80 over the course of a decade.

{mosads}Now Giuliani, a former presidential candidate who served two terms as New York City’s mayor from 1994 to 2001, tells The Hill that he wants to “create the biggest cybersecurity practice in the world.” 

“Because I really believe we can bring solutions that others can’t,” he said.

Giuliani will also serve as a senior advisor to Greenberg Traurig’s executive chairman, Richard Rosenbaum, while maintaining an active presence at Giuliani Partners, a consulting firm he founded in 2002.

Greenberg is one of the largest law firms in the world by revenue and opened offices in Berlin and Tokyo over the last year.  

Coming to the firm “expands our horizons by five times,” Giuliani said. “We now have a platform that matches the number of countries that I travel to.” He said he’s made more than 200 trips to upwards of 65 countries since leaving the mayor’s office.

Former federal prosecutor Marc Mukasey is also coming to Greenberg from Bracewell & Giuliani and will co-chair the firm’s white collar defense practice, calling the move “the perfect next step.”

Mukasey and Giuliani told The Hill about a program they have developed to help companies understand and comply with government regulations.

“If you talk to most general counsel and CEOs,” Mukasey said, “their number one challenge is not their competitors, it’s the government.”

In the private sector, Mukasey worked as the lead trial counsel for executives in the Countrywide mortgage fraud trial, in addition to high-profile cases involving the Deepwater Horizon blowout, the Major League Baseball steroid investigations and criminal trials concerning residential mortgage-backed securities, among others.

Greenberg Traurig is forming a strategic partnership with Giuliani Partners and its cyber-focused subsidiary called Giuliani Security and Safety. The two will assist each other’s clients, but Giuliani Partners will remain an independent entity.

However, Eric Hatzimemos, the managing partner of the consulting firm, will also be an advisor to Rosenbaum on strategic security matters.

While Giuliani offered up no predictions about who will prevail in the Republican presidential primary, he said he is evaluating the candidates for a potential endorsement. But the decision is tough, he says, because he has several close friends in the race. 

Giuliani noted that he has known Donald Trump and Jeb Bush for decades, has worked closely with New Jersey Gov. Chris Christie and was the second Republican to endorse Marco Rubio during his Senate run.

Giuliani also praised how Trump, during the most recent GOP debate, handled comments from Ted Cruz attacking the businessman as having “New York values.” 

“I have told all of them that I will make the decision based on who has the best chance of defeating Hillary,” Giuliani said.