I'm going through all my old notes that were marked as "drafts" and just... posting them.

07/01/04 - Dartmouth News - Investigating digital images
Farid and his students have built a statistical model that captures the mathematical regularities inherent in natural images. Because these statistics fundamentally change when images are altered, the model can be used to detect digital tampering. "there are underlying statistics and regularities in naturally occurring images."

The article is a bit dumbed down, wish there was more meaty techy dorky goodness. but fascinating nonetheless. wouldn't mind if that had been my senior thesis.... though will be interesting to see how reliable the algorithm is.