1. A method of disarming malicious code in a computer system having a processor, the method comprising: receiving, by the computer system, input content; and automatically applying, by the processor, a data value alteration model to the input content, the data value alteration model being configured to disarm malicious code included in the input content without interfering with an intended use of the input content and being applied without first detecting malicious code in the input content and without knowing a location of data units in the input content including malicious code, the data value alteration model including operations for: selecting, by the processor, at least a portion of a plurality of data units included in the input content, the portion being determined randomly or pseudo-randomly based on the data value alteration model determining that at least one of the data units of the portion is statistically likely to include any malicious code; and altering respective data values of the selected portion of the plurality of data units included in the input content.