Spam down to a quarter of August levels as botnets go quiet
                                
                                
                                    (Newser) -
                                    Along with assorted wildlife, there appears to have been a mass die-off of something else: spam emails. Spam levels, which had been dropping steadily since August, plummeted rapidly in late December, reports the  BBC . Some 200 billion spam messages were being sent every day in August, but just 50 billion...