Hi @MrD ,
JavaScript security is related to investigating, preventing, protecting, and resolving security issues in applications where JavaScript is used.
Common JavaScript security vulnerabilities:
- Cross-site scripting (XSS)
- Cross-site request forgery (CSRF)
- Components with known vulnerabilities
- SQL Injection
- Sensitive cookie exposure
- RELIANCE ON CLIENT-SIDE VALIDATION ALONE
JavaScript security best practices
- Avoid ev al(): Don’t utilize this command in code, since it simply executes passed argument if it is a JavaScript expression. This means if the hacker succeeds in manipulating input value, he or she will be able to run any script she wants. Instead, opt for alternative options that are more secure.
- Encrypt: Use HTTPS/SSL to encrypt data exchanged between the client and the server.
- Set secure cookies: To ensure SSL/HTTPS is in use, set your cookies as “secure,” which limits the use of your application’s cookies to only secure web pages.
- Set A P I access keys: Assign individual to k ens for each end user. If these tokens don’t match up, access can be denied or revoked.
- Use safe methods of DOM manipulation: Methods such as inn erH TML are powerful and potentially dangerous, as they don’t limit or escape/encode the values that are passed to them. Using a method like innerText instead provides inherent escaping of potentially hazardous content. This is particularly useful in preventing DOM-based XSS attacks.
- Avoid using inline JavaScript and establish a Content Security Policy.
- Minify, bundle, and obfuscate your JavaScript code.
Best regards,
Lan Huang
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