Cross-Site Request Forgery - attack that tricks users into performing unwanted actions on websites. Like someone forging your signature on documents without your knowledge.
Banking websites implement CSRF protection to prevent malicious sites from making unauthorized transfers.
CSRF (Cross-Site Request Forgery) is a web application security vulnerability and mitigation pattern, not a cloud provider service. All major clouds can help you implement CSRF defenses via their web frameworks, identity services, WAFs, and secure cookie/session configurations, but there is no single one-to-one managed service named “CSRF” in AWS, Azure, GCP, or OCI.