Anyone here of an issue with Kelloggs cereal?
The K symbol means nothing other than the ingredients are kosher. Not really supervised.
But A quick Google search showed this
"The cRc recommends Kellogg's cereals with only a K on the box. In my experience, I have not heard of anybody who disagrees with this. This is an unusual situation, though, since normally a plain K does not indicate reliable kashrut supervision. Apparently those cereals are under the supervision of the Rabbinical Council of New England (see linked question), but for some reason Kellogg's does not mark the boxes as being under their certification."