The blame does not entirely belong to these companies for being unprepared. Nor does the blame belong completely to the perpetrators who launched the attacks. A fair share of the blame belongs to everyday home and small business users like you and I who have left our networks open to hackers and intruders allowing them to utilize our hardware to commit these crimes. These attacks are a wake up call. With these new forms of connectivity come new responsibilities.
Users can no longer afford to be just users.
They must now become educated users aware of the risks they have opened their systems up to. The perpetrators used open systems to choreograph a wide scale massive attack directed at the servers of these companies. The enablers of this type of attack were users who have left their systems unprotected. Internet security is no longer just the concern of large companies. Now users like you and I must actively protect our own systems against people with malicious intent in mind.