In 2021, the information security company in South Korea, with the highest operating profit of around **** billion South Korean, was SK Shieldus. Despite including operating profits only up until the third quarter, SK Shieldus' operating profit was around thrice the amount of the following Ahnlab, which had around **** billion won in operating profit in the whole of 2021.
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Electronic Times Internet. (February 23, 2022). Major information security companies in South Korea in 2021, by operating profit (in billion South Korean won) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 01, 2026, from /statistics/1315550/south-korea-leading-information-security-companies-by-operating-profit/
Electronic Times Internet. "Major information security companies in South Korea in 2021, by operating profit (in billion South Korean won)." Chart. February 23, 2022. ÌÇÐÄÆƽâ°æ. Accessed August 01, 2026. /statistics/1315550/south-korea-leading-information-security-companies-by-operating-profit/
Electronic Times Internet. (2022). Major information security companies in South Korea in 2021, by operating profit (in billion South Korean won). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 01, 2026. /statistics/1315550/south-korea-leading-information-security-companies-by-operating-profit/
Electronic Times Internet. "Major Information Security Companies in South Korea in 2021, by Operating Profit (in Billion South Korean Won)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 23 Feb 2022, /statistics/1315550/south-korea-leading-information-security-companies-by-operating-profit/
Electronic Times Internet, Major information security companies in South Korea in 2021, by operating profit (in billion South Korean won) ÌÇÐÄÆƽâ°æ, /statistics/1315550/south-korea-leading-information-security-companies-by-operating-profit/ (last visited August 01, 2026)
Major information security companies in South Korea in 2021, by operating profit (in billion South Korean won) [Graph], Electronic Times Internet, February 23, 2022. [Online]. Available: /statistics/1315550/south-korea-leading-information-security-companies-by-operating-profit/
