First Securities is a legitimate broker operating under the regulation of the Taipei Exchange (TPEX), ensuring it follows the legal requirements for financial services in Taiwan. However, its "Unreleased" regulatory license number may raise concerns regarding the level of detail and transparency around its official registration. While it is a registered entity in Taiwan, traders should understand that the broker’s international regulatory standing is limited. Despite this, for those focused on the Taiwan market, First Securities provides a regulated and secure environment for trading.