Additional conditions on supervision orders under the Serious Sex Offenders (Detention and Supervision) Act 2009 (Vic) must constitute the minimum interference with the offender's liberty, privacy and freedom of movement necessary to achieve the Act's purposes, must be reasonably related to the gravity of the risk of reoffending, and must be sufficiently clear and unambiguous. Conditions that are disproportionately broad relative to the benefit they could reasonably be expected to realise, or that may hinder rather than promote rehabilitation, constitute errors of principle. The 'unacceptable risk' threshold involves a sliding scale: where the potential offending is of the gravest kind, satisfaction that the risk is unacceptable may be reached at a lower level of likelihood.
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