On 18 December 2008, lawyer Raymond Ruble, who once was a partner at Brown & Wood, was convicted on 10 counts of tax evasion while investment consultants Robert Pfaff and John Larson were convicted on 12 counts. They were acquitted of conspiracy. David Greenberg, deemed by the prosecution an "ongoing danger to the community" and a flight risk, was acquitted of all charges. Greenberg was jailed for five months and required to wear electronic monitoring for two and a half years afterward. His acquittal came as a result of Steve Acosta, a key government witness, being "utterly incapable of giving a straight answer on cross-examination", as conceded by Assistant U.S. Attorney John Hillebrecht in closing arguments. Acosta had pleaded guilty to conspiracy and tax evasion in a cooperation deal aimed at leniency at sentencing. He was released from federal prison on November 22, 2010. Judge Kaplan ordered that electronic monitoring begin for Pfaff at his Golden, Colo., home and for Larson at his New York City home, though the judge said he would reassess the need at a bail hearing next month, especially after what happened with Greenberg. Six people, including former KPMG tax partner David Rivkin; David Amir Makov, a one-time currency and fixed-income derivatives trader at Presidio; and Domenick DeGiorgio, a former managing director at German bank HVB, or Bayerische Hypo & Vereinsbank, have pleaded guilty to criminal charges in the matter.