51Coder

51Coder (website: www.51coder.cc, mobile: m.51coder.cc, hereinafter referred to as “the Platform” or “we”) takes user privacy very seriously. This Privacy Policy explains how we collect, use, store, share, and protect your personal information. Please read this policy carefully before using the Platform.

1. Information We Collect

1.1 Information We Collect

Registration Information: When registering via email, we collect your email address and password (stored encrypted).
WeChat Authorization: When you choose to log in via WeChat, we obtain your WeChat nickname, avatar, gender, and other public profile information, as well as OpenID and UnionID for identity verification, based on your authorization.
Order Information: When you make purchases or use custom development services, we record order details, product information, tier selection, and transaction amounts.

1.2 Information We Do Not Collect

We do not collect or store sensitive information such as bank card numbers, payment passwords, or government ID numbers. All payments are processed through third-party payment platforms (WeChat Pay, Alipay), which handle your payment information directly.

2. How We Use Information

We use collected information for the following purposes:

Core Services: User registration, identity verification, login management, order processing, and product delivery.
Cross-Platform Identity: Using WeChat UnionID to ensure you maintain a single account identity across web, mobile H5, WeChat Mini Program, and App platforms, enabling synchronization of orders, favorites, and other data.
Service Improvement: Analyzing usage patterns to optimize Platform features and user experience.
Security: Detecting and preventing malicious registration, fake orders, data scraping, attacks, and other abnormal behavior to protect the Platform and users.
Notifications: Sending order status updates, product delivery notices, system maintenance announcements, and other service-related notifications.
Legal Compliance: Using relevant information as required by applicable laws and regulations.

We will not use your personal information beyond the purposes stated above. We will not send you promotional messages unless you explicitly consent.

3. Information Storage

3.1 Storage Location

Your personal information is stored on Alibaba Cloud servers located within the People's Republic of China. We do not transfer your personal information outside of China.

3.2 Retention Period

Account Information: Retained during the existence of your account and deleted within 30 calendar days after account cancellation.
Transaction Records: Retained for at least 3 years as required by the E-Commerce Law of the People's Republic of China and other applicable regulations.
Log Information: Server logs are retained for no more than 180 days for security auditing and troubleshooting, then automatically purged.

4. Information Sharing

We commit to never selling, renting, or exchanging your personal information. We may share some of your information in the following circumstances:

Payment Processing: When you make a payment, we transmit necessary order information (such as order number and amount) to WeChat Pay or Alipay to complete the transaction. We do not provide your account password or other unrelated information to payment platforms.
Legal Requirements: When required by law, requested by government authorities, or necessary to protect the legitimate rights of the Platform, users, or the public.
With Consent: We may share your information with third parties when we have obtained your explicit consent.

5. Security Measures

We implement multiple technical and administrative measures to protect your personal information:

Transport Encryption: Full-site HTTPS encryption to prevent data interception or tampering during transmission.
Storage Encryption: Passwords are processed through salted hashing algorithms before storage, making them unrecoverable even in the event of a database breach.
Access Control: Strict permission management ensuring only authorized administrators can access user data, with all access operations logged.
Signature Verification: Critical interfaces such as WeChat Pay callbacks employ signature verification to prevent forged requests.

Despite these measures, please understand that no absolute security guarantee exists on the internet. In the event of a security incident, we will notify you promptly and take remedial action.

6. Cookies and Similar Technologies

The Platform uses cookies and similar technologies for the following purposes:

Authentication: Maintaining your login session so you don't need to re-login when browsing different pages.
Preferences: Remembering your language and interface settings.
Security: Assisting in detecting abnormal logins and malicious requests.

You can manage or disable cookies through your browser settings, but this may affect certain features (such as auto-login).

7. Your Rights

Under applicable laws and regulations, you have the following rights regarding your personal information:

Right of Access: You can view your account information, order history, and favorites in the personal center.
Right of Correction: If you find errors in your personal information, you can contact us to make corrections.
Right of Deletion: You can request deletion of your personal information. For information required by law (such as transaction records), we will delete it after the legally mandated retention period expires.
Right to Withdraw Consent: You can withdraw your consent for information collection and use at any time. Withdrawal does not affect the processing performed before the withdrawal.
Right to Cancel Account: You can initiate account cancellation through the personal center. After cancellation, we will delete your personal information per the timelines specified in this policy.

To exercise these rights, please contact us using the information provided at the end of this policy. We will respond within 15 business days.

8. Children's Privacy

The Platform's services are primarily intended for adults with full civil capacity. We do not knowingly collect personal information from minors under 14 years of age. If we discover that we have collected a minor's personal information without guardian consent, we will delete it promptly. If you are a guardian and discover that your ward has registered on the Platform without your consent, please contact us immediately.

9. Third-Party Services

The Platform may contain links to third-party websites or services (such as WeChat, Alipay). Please note that these third-party services have their own privacy policies, and we bear no responsibility for their privacy practices. We recommend reviewing their privacy policies before use.

10. Policy Updates

We may update this Privacy Policy from time to time in response to legal changes or business needs. Updated policies will be published on this page with a new effective date. For changes that significantly affect your rights (such as expanded data collection or changed purposes), we will proactively remind you to review and confirm through platform announcements or in-app messages.

11. Contact Us

If you have any questions, comments, suggestions about this Privacy Policy, or need to exercise your personal information rights, please contact us through:

Website: www.51coder.cc
WeChat Official Account: 51Coder

We will respond within 15 business days of receiving your request.