“The most common alternative names for he (sic) are Brett Hackspacher, Brett D Rosen, Brett Rosen, Brett Hackspacker, Brett Hackstazher.” - - - - - - - - - - - - - - Here are 2 reports on Ripoffreport.com:
And here’s a 2008 comment I found on the same website: “I knew BRETT HACKSPACHER when he lived in New York and I wanted to make sure his name was spelled correctly. It is true that he was convicted of a felony for the sale and distibution of cocaine and was sentenced for one year. When I knew him he was the biggest liar I knew. Pushy, arrogants and high on drugs. Glad to see he has moved to San Diego because we in New York have enough to deal with!”
Another person on Ripoff Reports accused him of bad behavior in CA (including substance abuse, paranoid behavior, and making death threats) and said “many persons signed declarations attesting to this”. That commenter also said that Brett was fired by David Nava. Sounds like Brett learned from Nava before he was fired (apparently at another company, which is no longer active):
“La Jolla financial services firm CEO pleads guilty to securities fraud”, 10/7/2020
“SAN DIEGO (CNS) – The CEO of a La Jolla-based financial services firm pleaded guilty Wednesday to defrauding shareholders, falsifying tax returns and operating an unlicensed money services business. David Nava, head of Surf Financial Group LLC, worked with others to convert publicly traded companies’ debt into unrestricted stock under false pretenses, and then sold the stock, despite being banned since 1994 by federal securities regulators from taking part in the securities industry, according to federal prosecutors.”
More details:
US DOJ: “CEO of Financial Firm Pleads Guilty to Running Multi-Million Dollar Securities and Tax Fraud Scheme, and Operating an Unlicensed Money Services Business”