Separating the wheat from the chaff

Winnowing

Article from Issue 136/2012
Author(s):

Attackers impose a high price on your limited resources. We look at some ways to separate the good from the bad.

As you may have noticed, spam, web-based attacks, and denial-of-service (DoS) attacks have gotten rather bad over the past few years. Currently, spam makes up about 90% of email messages; in other words, for every legitimate email you get, your server has to handle around nine spam messages. For online retailers, the stakes can be much higher. DoS attacks at the height of the shopping season can have a hugely negative impact. So, what can you do to deal with these problems?

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