From the document: > One proposed solution by Judge [14] uses spelling errors to hide data, for example spelling ”is” as ”iz”. A correctly spelled word indicat

From the document: > One proposed solution by Judge [14] uses spelling errors to hide data, for example spelling ”is” as ”iz”. A correctly spelled word indicated a zero, a incorrectly spelled word a 1. And one can see some spelling mistakes or variations across the document... (For instance:"This attack involves the analysis of know patterns the correspond to hidden information" or "being able to here the data hidden in audio" )