We just encountered 000000000000modified, and it was quite annoying to search
for these, even though I knew they existed. For those that don't know that they
exist, this is essentially impossible to search for :)
(Technically we encountered it in its hex form,
3030303030303030303030306d6f646966696564, so I'm adding comments with those
forms in case that's helpful to people in the future).
Isn't it 30303030... in hex? I'd prefer to fix it by changing the actual value to be what the comment says, though.