A man surfs the internet using a wireless connection in the lobby of a hotel in Havana

It’s never been easier to send an anonymous death threat.

In the old days, issuing one required a stamp, an envelope and a trip to a post box. You had to wear gloves to prevent embossing the page with incriminating fingerprints. Spell it out longhand? Good God no! Given a few leads, the boys in police forensics could compare it to other samples of your handwriting. Use a typewriter? Typewriters leave tell-tale signatures on the page by which the machine and potentially the owner can be identified. Cut and paste from newspaper headlines, ransom-note style? A very time- consuming ¬†project just to put the fear of death into somebody. Use a telephone? C’mon, phone records can be traced.