Following his conviction, Adler was taken to the maximum security Metropolitan Remand and Reception Centre and following initial classification, was placed in Long Bay Correctional Centre, before being transferred to the minimum security Kirkconnell Correctional Centre in late April 2005. However, less than two months later, Adler was transferred to the higher security Bathurst Correctional Centre after allegedly secretly restarting his business career from within the Kirkconnell facility. On 13 October 2007, Adler was released from the St Heliers Correctional Centre in the Upper Hunter Valley on parole, after serving two and a half years of his sentence, spending time in eight different correctional facilities. Adler described the prison system as "Darwinian, degrading, outdated, boring and pointless" in an article written for "The Bulletin" magazine in December 2007. During his time in solitary confinement, Adler befriended an individual in the next cell, as they were communicating through the acoustics of the toilet in their respective cells. They formed a deep friendship, something he spoke about with media.