Dating back to 2000, Sieberg was previously a tech contributor at ABC News and MSNBC, the CBS News science and technology correspondent, and the technology correspondent for CNN. His written work has appeared in several publications including Time, Salon and Details. He started his journalism career as a daily reporter at the Vancouver Sun covering tech/business/civics in 1998.

His first book titled, The Digital Diet: the four-step plan to break your tech addiction and regain balance in your life, was published in May 2011 with additional printings in the UK, Japan and Korea. It's about nurturing a healthy relationship with technology.

Sieberg has a bachelor’s degree in writing/communications (UVic, ’98) and master's degree in journalism with a focus in technology (UBC, '00). He lives in New York City with his wife and daughter.