There's been a case of alleged data manipulation in a recent Nano Letters paper (initial report here; now-retracted paper):
You can surely make your own opinion on whether the images have been digitally modified, given the above snapshots (look for gray rectangles around the rods); I was careful to write “alleged” because the paper’s PI threatened legal action against the blogger who reported the issue.
Now, this case lead to a large number of comments here and there about whose responsibility it was to catch this issue (reviewers or editor). I tend to agree that the reviewer should probably have caught it, but this lead me to wonder:
As editor of a scholarly journal, what measures can I implement to prevent image/photo manipulation? And what about data manipulation? Organic Letters has made the news two months ago when they hired a in-house data analyst. Is that the way to go? Are there other measures one could take to reduce the threat of image and data manipulation?