A security analyst at Arbor says that the DDOS attack on Twitter last week was not all that big, compared to others that have been done:

Arbor chief scientist Craig Labovitz says that Arbor's ATLAS 2.0 Internet monitoring system last week estimated that DDoS traffic directed at Twitter was not in the multi-gigabit range that characterizes most large attacks. Although he couldn't give specific data on just how large the Twitter attack last week was, Labovitz says that the attack was not as massive as media reports might suggest.

If that's true, I wonder how Twitter will deal with an attack that Arbor would call big?

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