The company is privately held and based in Redwood City, California.
In 2009 the company moved its products to a cloud computing service model.
The company holds a patent for its data modeling engine based on Bayesian spam filtering principals.
[2][3] In July 2012, Total Defense, Inc., a provider of cybercrime-fighting technology, announced they had acquired iSheriff.
[4] On April 21, 2014, Total Defense announced that, in conjunction with the sale of their consumer business unit to Untangle, they re-branded as iSheriff.