feat: increased security

internal/middleware/security.go

@@ -0,0 +1,14 @@
+package middleware
+
+import "github.com/gin-gonic/gin"
+
+func SecurityHeaders() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Header("X-Content-Type-Options", "nosniff")
+		c.Header("X-Frame-Options", "DENY")
+		c.Header("X-XSS-Protection", "1; mode=block")
+		c.Header("Referrer-Policy", "strict-origin-when-cross-origin")
+		c.Header("Content-Security-Policy", "default-src 'none'")
+		c.Next()
+	}
+}