The National Security Agency, America's equivalent of GCHQ, has banned Furbies from its premises.
The toy mimics the speech of its owners, and gradually developing its own language. That could be a risk in a building where much of the talk is top- secret, the NSA has decided.
In other words, having asked endearingly for a cookie, the Furby might then suggest bugging the Russian embassy and intercepting wireless traffic from the Iraqi military.
Perhaps, in the long term, the playthings might make valuable additions to the staff of GCHQ. At least they would never go on strike.