. "Supermax (short for: super-maximum security) is the name used to describe \"control-unit\" prisons, or units within prisons, which represent the most secure levels of custody in the prison systems of certain countries. The objective is to provide long-term, segregated housing for inmates classified as the highest security risks in the prison system\u2014the \"worst of the worst\" criminals\u2014and those who pose a threat to national and international security."@en . .