IronPort Systems, headquartered in San Bruno, California, designed and sold products and services that protect enterprises against Internet threats. It was best known for IronPort AntiSpam, the SenderBase email reputation service, and email security appliances. Senderbase has recently been renamed as Sensorbase to take account of the input into this database that other Cisco devices provide. SensorBase allows these devices to build a risk profile on IP addresses, therefore allowing risk profiles to be dynamically created on http sites and SMTP email sources. These appliances run a modified FreeBSD kernel under the trademark AsyncOS.^[1]

Founded in December, 2000, by Scott Banister and Scott Weiss, IronPort drew its early technical staff from companies such as Hotmail, eGroups, ListBot, and Yahoo!.^{[citation needed]}

On November 24, 2003, IronPort acquired the SpamCop filtering and reporting service, which it runs as a stand-alone entity.^[2]

Cisco Systems announced^[3] on January 4, 2007 that it would buy IronPort in a deal valued at US$830 million. Cisco completed the acquisition on June 25, 2007.^[4][5]

[edit] References

[edit] External links

• Official website
• Senderbase domain search (used by Ironport email products)
• A few informed viewpoints
• Speculation about why Cisco bought IronPort
• Cisco Buys IronPort for $830 Million

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