Source Pod Inc. (Headquarters: Shinjuku-ku, Tokyo; President and CEO: Takeshi Yamamoto; hereinafter "Source Pod"), a provider of cloud email security, cybersecurity, and security consulting services, announced that Pony Kogyo Co., Ltd. (hereinafter "Pony Kogyo") has implemented the security management service 'SPC Trust Chain' for the SCS Evaluation System to achieve a ★4 rating in the Security Countermeasure Evaluation System for Supply Chain Strengthening (hereinafter "SCS Evaluation System"). Pony Kogyo, a specialized trading company in non-destructive testing that supports quality control and maintenance for infrastructure facilities such as power plants and oil plants, has begun efforts to achieve a ★4 rating in the SCS Evaluation System, driven by the increasing security demands from the supply chain. To obtain ★3 and ★4 ratings in the SCS Evaluation System, companies are required to comply with all evaluation criteria, which consist of 81 items for ★3 and 153 items for ★4. However, many companies undertaking SCS Evaluation System initiatives express that they "don't know what to do or how far to go" regarding these evaluation criteria. Furthermore, security checks for the evaluation criteria are not a one-time event; continuous checking and updating, meaning a PDCA cycle based on the evaluation criteria, are required even after obtaining the rating. ■ Security Check and Update Process for ★3 and ★4 Evaluation Criteria [1] Assessment: Evaluation and gap analysis against the evaluation criteria at the start of the initiative. [2] Countermeasures and Preparation: Preparation of countermeasures for unfulfilled or problematic evaluation criteria. [3] Operation and Inspection: Implementation of operations and inspections required by the evaluation criteria. [4] Response to Guideline Updates: Extraction of differences between existing and new guidelines, and response to these differences through [1], [2], and [3]. Pony Kogyo, which handles daily information system-r