Solomon Dwek is an Israeli-American former real estate mogul and disgraced scion of a prominent Syrian Jewish family in New Jersey, son of the founders of a community yeshiva. Once a multimillionaire with a portfolio of over 400 properties, his empire collapsed in 2006 following a failed attempt to defraud PNC Bank of $50 million through a check-kiting scheme. Facing up to 30 years in prison, he agreed to become a high-level cooperating witness and informant for the FBI, initiating the third phase of the massive corruption investigation known as Operation Bid Rig. Operating under the undercover alias 'David Esenbach,' Dwek spent three years posing as a businessman and developer looking to hide bankruptcy assets and pay bribes to expedite building permits. He recorded hundreds of hours of conversations, infiltrating money laundering networks and political circles, and served as the source of laundered funds to facilitate sting operations. His cooperation directly led to the 2009 arrest of 44 individuals, including multiple mayors, assemblymen, and high-ranking rabbis from the Syrian Jewish community. Specific operations included providing checks to criminal organizations for laundering, such as depositing into the gemach and providing checks to Beth Pinchas; targeting individuals like Rosenbaum (where Deutsch believed Dwek was laundering proceeds from counterfeit goods); incriminating Goldhirsh in money laundering transactions leading to his arrest; and stinging Schwartz and his brother by posing as a developer. Dwek recorded multiple meetings with Spira to exchange illicit cash for checks, recorded Friedlander accepting checks and returning cash bags, received an introduction to the 'washing machine' money laundering system from Haber on March 6, 2007, at Altman's place of business in Union City, engaged in illicit cash transactions at Weber's office and at Polack's office, and recorded Ben Haim laundering $1.5 million. As the FBI cooperating witness, Dwek submitted 'dirty' checks to Ben Haim, which were then converted into physical cash through Weiss. Franco was a major investor and partner in Dwek's real estate ventures, later becoming a primary creditor in Dwek's bankruptcy with a $30 million claim. Despite his pivotal role in one of New Jersey's largest corruption busts, Dwek remains a pariah in his community and served several years in prison for his original fraud charges.