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RentCalculators takes your security seriously. The Shopping-Cart is equipped with 128-bit Secure Socket Layer technology “SSL” the industry standard encryption for data transmission. In addition, www.RentCalculators.org is officially certified as "McAfee SECURE." Sites officially certified as "McAfee SECURE" are tested daily to pass all audit recommendations of the Department of Homeland Security's National Infrastructure Protection Center “NIPC,” the audit requirements of Visa's “CISP” and “AIS,” MasterCard's “SDP,” American Express' “DSS” and Discover Card's “DISC” security standards. Source: McAfee Inc.