Of course, many of these devices can be taken over and become botnets, just like computers are today. If you can imagine the massive DDoS attacks that we will most likely have in the future, this is a fantastic challenge for everybody working in this field.
On the good side, Arbor Networks has today a system, called ATLAS - Active Threat Level Analysis System - which is a project where Arbor Networks is, together with 320 service providers and large Cloud networking providers, collecting about 120 Terabit per second of anonymized traffic data for security purposes so that the company can detect botnets, DDoS attacks and produce countermeasures with the Arbor computer engineering response team.
What the company does with these fingerprints and countermeasures is that Engström's colleagues update the systems so that all customers can get the best and most accurate defense system against this kind of advanced Internet threats.
More information is available at the Arbor Networks website.