Resolve Website Security and Speed

My website is experiencing two critical issues that need immediate attention: security risks due to hacking attempts or malware infections, and slow loading of images caused by poor server performance. The primary focus is to secure the site against potential threats and eliminate existing vulnerabilities. In addition, I need to optimize the website's server to improve image load times and overall performance. Please ensure all work prioritizes effective security measures and speed enhancements for a seamless user experience.