GITSN develops, manufactures, and sells wireless security solutions built on radio-frequency (RF) source technology, with its core business centered on eavesdropping detection, wireless backdoor hacking detection, and illegal-filming detection.
According to a company visit report published in December 2025, revenue mix was split into eavesdropping security at 40.25%, wireless backdoor security at 8.04%, illegal-filming security at 18.42%, with the remainder from maintenance revenue.
A brokerage report described GITSN as holding a 98.8% share of the public tender market for always-on eavesdropping detection and 60.5% of the public tender market for illegal-filming detection.
Separately, based on the government procurement data hub, the company held a cumulative 51.31% share of the public tender market for illegal-filming detection systems over the five-and-a-half years from 2021 through June 2026, ranking first.
Its customer base has expanded to include banks, securities firms, card companies, and insurers in the financial sector as well as government and public institutions, the military, semiconductor firms, and IT companies.
It recently signed successive wireless backdoor hacking detection system supply contracts with global semiconductor manufacturers following earlier contracts with a major domestic financial institution. The company completed a SPAC merger last year to move its listing from KONEX to KOSDAQ.
It subsequently disclosed a 5-for-1 share consolidation resolution at an extraordinary general meeting, under which par value would rise from KRW 100 to KRW 500 and shares outstanding would fall from about 55.08 million to about 11.02 million, matching the current share count.
As a new growth driver, the company is entering the market for wireless sensing and diagnostic equipment used in semiconductor plasma processes, leveraging its RF source technology.