* Revenues for 3Q '16 represent an estimate based on the first, second, and fourth quarter revenues, subtracted from full 2016 revenues.
The source doesn't publish data for every quarter.
Citation formats
Global security appliance vendor revenue 2012-2021, by quarter
In the second quarter of 2021, Palo Alto Networks generated million U.S. dollars in the security appliance market, whilst Cisco generated million U.S. dollars in revenue, placing them in second place in the vendor rankings by revenue.
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IDC. (September 9, 2021). Security appliance vendor revenue worldwide from 2012 to 2021, by quarter (in million U.S. dollars) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved August 01, 2026, from /statistics/235342/global-security-appliance-revenue-of-leading-security-appliance-vendors/
IDC. "Security appliance vendor revenue worldwide from 2012 to 2021, by quarter (in million U.S. dollars)." Chart. September 9, 2021. ÌÇÐÄÆÆ½â°æ. Accessed August 01, 2026. /statistics/235342/global-security-appliance-revenue-of-leading-security-appliance-vendors/
IDC. (2021). Security appliance vendor revenue worldwide from 2012 to 2021, by quarter (in million U.S. dollars). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: August 01, 2026. /statistics/235342/global-security-appliance-revenue-of-leading-security-appliance-vendors/
IDC. "Security Appliance Vendor Revenue Worldwide from 2012 to 2021, by Quarter (in Million U.S. Dollars)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 9 Sep 2021, /statistics/235342/global-security-appliance-revenue-of-leading-security-appliance-vendors/
IDC, Security appliance vendor revenue worldwide from 2012 to 2021, by quarter (in million U.S. dollars) ÌÇÐÄÆÆ½â°æ, /statistics/235342/global-security-appliance-revenue-of-leading-security-appliance-vendors/ (last visited August 01, 2026)
Security appliance vendor revenue worldwide from 2012 to 2021, by quarter (in million U.S. dollars) [Graph], IDC, September 9, 2021. [Online]. Available: /statistics/235342/global-security-appliance-revenue-of-leading-security-appliance-vendors/