Privacy Policy
How we handle your personal information
Last updated: December 3, 2025
01Introduction
Koshikawa.net ("this site") respects the privacy of its users and is committed to protecting personal information. This privacy policy explains how personal information is handled on this site.
02Information We Collect
This site may collect the following information.
Contact Form
- •Name
- •Email address
- •Phone number (optional)
- •Affiliation (optional)
- •Message content
Access Analytics
The following information is automatically collected to improve our service.
- •Access date and time
- •Pages viewed
- •Referrer (source URL)
- •Browser and OS used
- •Screen resolution
- •IP address (stored anonymized)
03Purpose of Use
Collected information is used for the following purposes.
- •Responding to inquiries
- •Improving our services
- •Analyzing access patterns
- •Preventing unauthorized access
04Disclosure to Third Parties
This site does not disclose collected personal information to third parties except in the following cases.
- •With the user's consent
- •When required by law
- •When necessary to protect a person's life, body, or property
05External Services
This site uses the following external services. Please refer to each service's own privacy policy for details.
Google reCAPTCHA
This site uses Google reCAPTCHA v3 to prevent spam submissions through the contact form. This means Google's Privacy Policy and Terms of Service apply.
Vercel Analytics
This site uses Vercel Analytics to measure site performance. Please see Vercel Analytics' privacy policy for details.
06Use of Cookies
This site uses cookies to improve the user experience and the service overall. You can disable cookies in your browser settings, but some features may not work correctly as a result.
07Security
This site implements appropriate security measures to prevent the leakage, loss, or tampering of personal information. Communications are encrypted using SSL/TLS.
08Contact
For inquiries regarding this privacy policy, please contact us via the contact form.
09Changes to This Policy
This site may revise this privacy policy as necessary. Any significant changes will be announced on this site.