The social network botnet called Siren algorithmically created Twitter accounts and generated more than 8.5 million spam tweets. ZeroFOX, a company that discovered the botnet, believes this has been one of the largest spam campaigns on social media so far. The botnet used sophisticated techniques in order to deceive various anti-spam tools used by Twitter and Google. Siren gained over 30 million clicks from its victims. Although the links led to sites related to porn services they, reportedly, did not contain any malware.  Nevertheless this case demonstrates some weak points and vulnerabilities of new communication tools. Spammers have been increasingly re-focusing their vectors of attack shifting from email to other channels like social media and instant messengers.