"There are two parts to the security system. The first is a mechanism for distinguishing safe data from untrusted, or tainted, data. ... Importantly, taintedness is contagious, so objects derived from tainted objects are also tainted." p.409.
"There is a risk the Care Quality Commission's new responsibility for rating hospital's efficiency could "taint" its focus on quality, senior health policy experts have warned." p.5.
Hazell, W. (2015) New CQC role may 'taint' quality remit, Health Service Journal, 17 June. 125: 6451, p.5.