Update security warning in README

Clarified warning about security issues in README.

Author: Arlen22

README.md

@@ -33,11 +33,11 @@ Most of these features are still in development.
 
 <img width="800" alt="dark mode" src="https://github.com/user-attachments/assets/301cb61c-1f39-4d4f-8f4a-8ecd5306c084" />
 
-## Warning: Security is still a dumpster fire.
+## Warning: Security between users is still a dumpster fire.
 
 **Do not use it to protect feelings or intellectual property.**
 
-**While the database structure is reliable, the security mechanism is more like swiss cheese. Do not use it to protect feelings or intellectual property. There are plenty of ways to get around the security restrictions.**
+**While the database structure is reliable, the security mechanism is more like swiss cheese. Do not use it to protect feelings or intellectual property. There are plenty of ways for anyone with write access to get around the security restrictions.**
 
 <img width="800" alt="this is fine" src="https://github.com/user-attachments/assets/49505d25-7a48-42f1-b4f7-73e8630c1ba1" />