A new Gartner report reveals growth ahead for the cloud security services segment as more small to midsized companies jump on the bandwagon. The market is expected to hit $4.13 billion in four years with the most spending to be used on the secure e-mail gateway service front, where it will spike from $800 million this year to $1 billion by 2017. An emerging area ripe for growth is cloud-based encryption services, but there are a few complex challenges stalling overall adoption.

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