📌合約與法律規範 Contracts and legal regulations
✅ 訂立明確合約 (SLA, NDA)
SLA (Service Level Agreement，服務水準協議)：確保廠商達到預期的服務標準（如可用性、維護時效）。
NDA (Non-Disclosure Agreement，保密協議)：確保委外廠商不得洩漏或濫用企業機密資訊。
明確規範 資安責任，包括資料保護、應變處理及事件通報機制。
✅ Establish a clear contract (SLA, NDA)
SLA (Service Level Agreement): Ensures that the manufacturer meets the expected service standards (such as availability, maintenance timeliness).
NDA (Non-Disclosure Agreement): Ensures that outsourced manufacturers do not leak or abuse company confidential information.
Clearly define information security responsibilities, including data protection, response handling and incident reporting mechanisms.
✅ 法規遵循
✅ Regulatory Compliance
Ensure that outsourced vendors comply with relevant information security standards such as GDPR, ISO 27001, NIST, Information and Communications Security Management Act, Personal Data Protection Act, etc.
If cross-border data processing is involved, it must comply with local laws (such as EU GDPR, US CCPA).
📌委外人員與權限管理Outsourcing and authority management
✅ 最小權限原則 (Least Privilege)
✅ Principle of Least Privilege
Only allow outsourced personnel to access necessary systems and data to avoid granting unnecessary permissions.
Set up “Separation of Duties” so that different people are responsible for different tasks to reduce risks.
✅ 帳號管理
✅ Account management
Each outsourced person should have an independent account to avoid sharing accounts and ensure traceability.
Enable multi-factor authentication (MFA) to prevent unauthorized access.
Set up an automatic permission recovery mechanism to revoke permissions immediately when an employee leaves or the contract is terminated.
📌資訊存取與資料保護Information Access and Data Protection
✅ 資料存取控制
僅允許委外廠商存取經過審核與授權的資料，並設定存取日誌。
敏感資料應加密存儲與傳輸，如使用 AES-256 加密或 TLS 1.2/1.3。
使用 Data Masking (資料遮罩) 或 Tokenization (令牌化) 技術，降低資料外洩風險。
✅ Data access control
Only allow outsourced vendors to access audited and authorized data, and set up access logs.
Sensitive information should be stored and transmitted encrypted, such as using AES-256 encryption or TLS 1.2/1.3.
Use Data Masking or Tokenization technology to reduce the risk of data leakage.
✅ 端點安全防護
✅ Endpoint security protection
The equipment of outsourced personnel should comply with corporate security standards (such as installing anti-virus software and endpoint detection and response (EDR)).
The use of unauthorized USB devices, personal computers, or cloud storage (e.g. Google Drive, Dropbox) is prohibited.
✅ 遠端存取規範
✅ Remote access specifications
📌日誌與異常監控Log and exception monitoring
✅ 系統日誌管理
✅ System log management
Record the access history of outsourced personnel, including login time, accessed system and changed content.
Various logs should be kept for at least 6 months to facilitate future investigations.
✅ 異常行為偵測
✅ Abnormal behavior detection
Set up SIEM (Security Information and Event Management) monitoring mechanism to automatically detect abnormal access behavior.
When anomalies are detected, such as large amounts of data being downloaded or unusual login locations, an alert should be triggered immediately and an investigation should be conducted.
📌資安事件應變計畫 (Incident Response Plan, IRP)
✅ 明確資安事件應變機制
✅ Clarify the response mechanism for information security incidents
If data leakage or abnormal behavior occurs, the outsourced manufacturer should immediately notify the company and cooperate with the investigation.
Set event levels (such as low, medium, and high risk) and correspond to different handling procedures.
✅ 定期演練與滲透測試
✅ Regular drills and penetration testing
Conduct at leat 1-2 cybersecurity incident drills per year (e.g. data breach, DDoS attack response).
Conduct penetration testing to ensure that there are no security loopholes in the outsourced system.
⚠️ 委外資安作業應注意的關鍵點Key points to note when outsourcing information services
✅ 確保廠商符合資安標準（如 ISO 27001、GDPR）。
✅ 最小權限原則，避免授權過多，確保權限回收機制。
✅ 資料加密與存取管控，避免機密資料外洩。
✅ 遠端存取安全措施，使用 VPN、MFA、IP 限制等。
✅ 日誌監控與異常偵測，設置 SIEM 監控並保存記錄。
✅ 明確資安事件應變計畫，並定期進行演練與滲透測試。
單位在委外服務時，應確保資安作業涵蓋合約規範、存取管理、資料保護、日誌監控及應變計畫，並定期稽核廠商資安狀況，以降低外包風險，確保資訊安全！
✅ Ensure that outsourced service providers comply with information security standards (e.g. ISO 27001, GDPR).
✅ Follow the principle of least privilege, avoid over-authorization, and ensure permission recovery mechanism.
✅ Data encryption and access control to prevent confidential information from being leaked.
✅ Remote access security measures, use VPN, MFA, IP restrictions, etc.
✅ Log monitoring and anomaly detection, set up SIEM monitoring and store records.
✅ Define a security incident response plan and conduct regular drills and penetration tests.
When outsourcing services, companies should ensure that information security operations cover contract specifications, access management, data protection, log monitoring and contingency plans, and regularly review the vendor's information security status to reduce outsourcing risks and ensure information security!
