diff --git a/README.md b/README.md
index 6df43d2..3606423 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,6 @@
 [![Snyk Security Scan](https://github.com/SkinSightYnov/backend/actions/workflows/snyk.yml/badge.svg)](https://github.com/SkinSightYnov/backend/actions/workflows/snyk.yml)
 
 
-
 ## Description
 
 ...
@@ -13,6 +12,9 @@
 
 ```bash
 $ npm install
+
+$ npx prisma generate : génération des types
+
 ```
 
 ## Running the app
diff --git a/package.json b/package.json
index b79c4ba..5db5f38 100644
--- a/package.json
+++ b/package.json
@@ -30,11 +30,13 @@
     "@nestjs/platform-express": "^10.0.0",
     "@nestjs/swagger": "^7.1.17",
     "@nestjs/terminus": "^10.2.0",
+    "@nestjs/throttler": "^5.1.2",
     "@prisma/client": "^5.9.0",
     "axios": "^1.6.5",
     "bcrypt": "^5.1.1",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.1",
+    "helmet": "^7.1.0",
     "passport": "^0.7.0",
     "passport-jwt": "^4.0.1",
     "prom-client": "^15.1.0",
diff --git a/src/app.module.ts b/src/app.module.ts
index b0d6b5b..70b993c 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -4,7 +4,7 @@ import { AppService } from './app.service';
 import { HealthModule } from './prisma/health/health.module';
 import { LoggerModule } from './logger/logger.module';
 import { MetricModule } from './metric/metric.module';
-import { APP_INTERCEPTOR } from '@nestjs/core';
+import { APP_GUARD, APP_INTERCEPTOR } from '@nestjs/core';
 import { LoggingInterceptor } from './logger/logger.interceptor';
 import { ConfigModule } from '@nestjs/config';
 import { AuthModule } from './auth/auth.module';
@@ -15,9 +15,16 @@ import { MedecinsModule } from './medecins/medecins.module';
 import { DermatologuesModule } from './dermatologues/dermatologues.module';
 import { AppointmentsModule } from './appointments/appointments.module';
 import { PatientsModule } from './patients/patients.module';
+import { ThrottlerGuard, ThrottlerModule } from '@nestjs/throttler';
 
 @Module({
   imports: [
+    ThrottlerModule.forRoot([
+      {
+        ttl: 60000,
+        limit: 150,
+      },
+    ]),
     UsersModule,
     HealthModule,
     LoggerModule,
@@ -39,6 +46,10 @@ import { PatientsModule } from './patients/patients.module';
       provide: APP_INTERCEPTOR,
       useClass: LoggingInterceptor,
     },
+    {
+      provide: APP_GUARD,
+      useClass: ThrottlerGuard,
+    },
   ],
 })
 export class AppModule {}
diff --git a/src/main.ts b/src/main.ts
index 1d306d4..9275610 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -4,6 +4,7 @@ import { AppModule } from './app.module';
 import { LoggingInterceptor } from './logger/logger.interceptor';
 import { ValidationPipe, ClassSerializerInterceptor } from '@nestjs/common';
 import { SanitizerGuard } from './sanitizer.guard';
+import helmet from 'helmet';
 declare const module: any;
 
 async function bootstrap() {
@@ -11,6 +12,7 @@ async function bootstrap() {
   app.enableCors({ origin: '*' });
   app.useGlobalInterceptors(new LoggingInterceptor());
   app.useGlobalGuards(new SanitizerGuard());
+  app.use(helmet());
 
   app.useGlobalPipes(new ValidationPipe({ whitelist: true }));
   app.useGlobalInterceptors(new ClassSerializerInterceptor(app.get(Reflector)));
diff --git a/src/sanitizer.guard.ts b/src/sanitizer.guard.ts
index 19f1377..87599d5 100644
--- a/src/sanitizer.guard.ts
+++ b/src/sanitizer.guard.ts
@@ -1,35 +1,27 @@
-import { CanActivate, ExecutionContext, Injectable } from '@nestjs/common';
-import { Observable } from 'rxjs';
-import xss from 'xss';
+import { Injectable, CanActivate, ExecutionContext } from '@nestjs/common';
+import * as xss from 'xss';
 
 @Injectable()
 export class SanitizerGuard implements CanActivate {
-  canActivate(
-    context: ExecutionContext,
-  ): boolean | Promise<boolean> | Observable<boolean> {
+  canActivate(context: ExecutionContext): boolean {
     const request = context.switchToHttp().getRequest();
 
     if (request.body) {
-      request.body = this.cleanData(request.body);
-    }
-
-    if (request.query) {
-      request.query = this.cleanData(request.query);
-    }
-
-    if (request.params) {
-      request.params = this.cleanData(request.params);
+      this.sanitizeData(request.body);
     }
 
     return true;
   }
-  private cleanData(data: Record<string, any>): Record<string, any> {
+
+  private sanitizeData(data: Record<string, any>): void {
     for (const key in data) {
-      if (data.hasOwnProperty(key) && typeof data[key] === 'string') {
-        data[key] = xss(data[key]);
+      if (data.hasOwnProperty(key)) {
+        if (typeof data[key] === 'string') {
+          data[key] = xss.filterXSS(data[key]);
+        } else if (typeof data[key] === 'object') {
+          this.sanitizeData(data[key]);
+        }
       }
     }
-
-    return data;
   }
 }