Debian Project Oxer was admitted to the
Debian Project in August 2002. He subsequently convened the Debian Miniconf in a different city every year in conjunction with Linux.conf.au: Perth in 2003, Adelaide in 2004, Canberra in 2005, Dunedin (New Zealand) in 2006, Sydney in 2007, and Melbourne in 2008.
Linux Australia Inc Oxer was elected President of
Linux Australia on 25 January 2005, serving three consecutive terms. He was also nominated for the 2008 election but did not accept the nomination. Early in his first term Oxer was the focus of controversy surrounding the application for a trademark in Australia for the term "Linux". In many countries the trademark "Linux" is registered by or on behalf of the
Linux Mark Institute, an organisation which administers the trademark on behalf of
Linus Torvalds. Following an attempt by an unassociated commercial entity known as Linux Australia Pty Ltd to register the trademark within Australia, Linux Australia agreed to act as an agent of Linux Mark Institute to contest the pending trademark application by Linux Australia Pty Ltd and submit a counterclaim for the trademark. Subsequent action taken by Linux Australia included presentation of a request for support for the trademark application to a number of FOSS-related businesses in Australia by a lawyer acting on behalf of the organisation. As a result of the way the letter was worded some recipients misinterpreted it as a demand for payment for use of the trademark, causing a negative backlash within the FOSS community.
Jon Hall, President of Linux Mark Institute, subsequently defended the actions of Linux Australia Inc and confirmed that the application was submitted on behalf of the organisation. The trademark applications by both Linux Australia Pty Ltd and Linux Australia Inc were ultimately denied. During his incumbency Oxer was a vocal opponent of changes to Australian intellectual property law mandated by the
Australia-United States Free Trade Agreement, and in particular the broader definition of technological protection measures. In January 2020 he was awarded the
Rusty Wrench Award for his services to the free software community in Australia. ==Cryptography==