Aharpo.407
net.general
utzoo!decvax!ucbvax!ihnss!cbosg!harpo!jerry
Wed Aug 12 10:42:36 1981
forgery

I suppose Steve should know better than I do, but why couldn't 
a forger just uux (or execute directly)  rnews on a machine
with the input indicating the item came from datamat!rumor. 
In fact couldn't you drop it in almost anywhere in the net?  
Potentially the later can be detected because you will end up with 
peculiar headers (e.g. the item
appears to have passed through a machine twice.)  A little
more cleverness, and a better understanding of netnews might
circumvent even that problem, and in any event the only thing
you could learn would be the machine rnews was executed on.