A Long Island firm is currently under federal investigation for fraud after allegedly attempting to run a Ponzi-style scheme where they claimed to be associated with Jay Z's company Roc Nation. Cardis International, a credit card company based in Cedarhurst in Nassau County, informed potential investors via e-mail that they were hired by Roc Nation to handle bill processing in an effort to con backers out of upwards of $70 million. 

Briant "Bee-High" Biggs, Jay Z's cousin and director of mobile strategies for Roc Nation, has denied that the company was involved in any way with Cardis International. Biggs is listed as being on the advisory board on the company's website. The New York Post has learned that some investors attached to Cardis include Ben Brafman, the current defense attorney for Martin Shkreli who also represented Diddy following the 1999 incident at Club New York, as well as Plaxico Burress after the former NFL wide receiver accidentally shot himself in the thigh at a Manhattan nightclub. 

One investor, Dvora Weinstein, claims Cardis co-founder Aaron Fischman approached her about investing $300,000 into his company. Fischman told Weinstein that he would make “a generous exception” in order for her to invest, assuring her that he did not need her money at the moment. However, Cardis was believed to be more than $3 million in debt when the two spoke. 

Cardis's lawyer Andrew Goodman has responded to these reports by stating he is “not aware of any requests from the federal government.”