To protect live web apps, prioritize these strategies: 1. Use HTTPS: Encrypt data with SSL/TLS certificates. 2. Sanitize Inputs: Prevent SQL/XSS attacks by validating and escaping user inputs. 3. Update Dependencies: Regularly patch libraries and frameworks. 4. Secure Headers: Add Content-Security-Policy and X-Frame-Options to defend against XSS and clickjacking. 5. Rate Limiting: Prevent brute force attacks with tools like express-rate-limit. 6. Strong Authentication: Use MFA to secure accounts. 7.Monitoring: Automate alerts for unusual activities using tools like DataDog or New Relic. 8. Backups: Regularly back up data to handle breaches effectively. Focus on automation to simplify maintenance and improve security

Additionally, conducting regular security audits and vulnerability assessments can help identify potential weaknesses and strengthen your application's defenses before any breaches occur.

Input Validation and Sanitization: Strict Input Validation: Implement robust validation rules to filter and sanitize user input, preventing malicious code injection attacks like SQL injection and cross-site scripting (XSS). Regular Expression Validation: Use regular expressions to enforce specific input formats and limit potential vulnerabilities. Secure Coding Practices: Secure Coding Standards: Adhere to established secure coding standards like OWASP Top 10 to minimize common vulnerabilities. Code Reviews: Conduct regular code reviews to identify and address potential security issues early in the development process.

Data safety is one of the biggest concerns for any software product. There can be multiple ways to protect data in web applications, out of which few are listed below - 0. Implement multi layered security architecture in your application and regularly plan a security audit from some firms. 1. Maintain abstraction as much as possible. Make sure data is not present easily while debugging any web applications using simple tools. 2. Implement firewalls on your servers. 3. Your data vaults have to be secured and restricted to authorised access only. In databases, implement server side certificate validations on queries, location based restrictions, etc. So, investing some time on these types of techniques can save you the effort of months.