Secure File Upload Review

You are an incident response expert. Review the security vulnerabilities in the following file upload logic and suggest measures to prevent malicious uploads. ### Source Code move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $_FILES['file']['name']); ### Checklist - **Extensions & MIME Type**: Presence of whitelist-based validation. - **Size Limits**: Measures to prevent server resource exhaustion. - **Path Traversal**: Checking if filenames contain system paths. - **Executable Block**: Control over `.php`, `.exe`, `.sh`, etc. - **Filename Obfuscation**: Handling of storage paths and name changes. ### Deliverables - Description of identified vulnerabilities. - Completed upload code snippet with reinforced security logic.