diff --git a/backend/src/app.module.ts b/backend/src/app.module.ts
index 5da1b31..709e275 100644
--- a/backend/src/app.module.ts
+++ b/backend/src/app.module.ts
@@ -1,3 +1,4 @@
+import { Module, MiddlewareConsumer, NestModule } from '@nestjs/common';
 import { Module, NestModule, MiddlewareConsumer, RequestMethod } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { ConfigModule, ConfigService } from '@nestjs/config';
@@ -16,6 +17,14 @@ import { PuzzlesModule } from './puzzles/puzzles.module';
 import { QuestsModule } from './quests/quests.module';
 import { StreakModule } from './streak/strerak.module';
 import { CategoriesModule } from './categories/categories.module';
+import { TransactionMiddleware } from './middleware/transaction/transaction.middleware';
+import { TransactionLogger } from './middleware/transaction/transaction.logger';
+import { CompressionMiddleware } from './middleware/compression/compression.middleware';
+import { IdempotencyMiddleware } from './middleware/idempotency/idempotency.middleware';
+import { SecurityHeadersMiddleware } from './middleware/security/security-headers.middleware';
+
+
+
 import { JwtAuthModule, JwtAuthMiddleware } from './auth/middleware/jwt-auth.module';
 import { REDIS_CLIENT } from './redis/redis.constants';
 import jwtConfig from './auth/authConfig/jwt.config';
@@ -23,9 +32,6 @@ import { UsersService } from './users/providers/users.service';
 import { GeolocationMiddleware } from './common/middleware/geolocation.middleware';
 import { HealthModule } from './health/health.module';
 
-// const ENV = process.env.NODE_ENV;
-// console.log('NODE_ENV:', process.env.NODE_ENV);
-// console.log('ENV:', ENV);
 
 @Module({
   imports: [
@@ -87,7 +93,6 @@ import { HealthModule } from './health/health.module';
     CommonModule,
     RedisModule,
     BlockchainModule,
-    ProgressModule,
     CategoriesModule,
     // Register the custom JWT Auth Middleware module
     JwtAuthModule.registerAsync({
@@ -104,9 +109,19 @@ import { HealthModule } from './health/health.module';
     HealthModule,
   ],
   controllers: [AppController],
-  providers: [AppService],
+  providers: [AppService, TransactionLogger],
 })
 export class AppModule implements NestModule {
+  configure(consumer: MiddlewareConsumer) {
+    // Apply transaction middleware globally
+    consumer.apply(TransactionMiddleware).forRoutes('*');
+
+    
+    consumer.apply(CompressionMiddleware).forRoutes('*');
+        consumer.apply(IdempotencyMiddleware).forRoutes('*');
+            consumer.apply(SecurityHeadersMiddleware).forRoutes('*');
+        
+
   /**
    * Apply the JWT Authentication Middleware to all routes except public ones.
    */
diff --git a/backend/src/common/controllers/security.controller.ts b/backend/src/common/controllers/security.controller.ts
new file mode 100644
index 0000000..e527283
--- /dev/null
+++ b/backend/src/common/controllers/security.controller.ts
@@ -0,0 +1,14 @@
+import { Controller, Get, Res } from '@nestjs/common';
+import { Response } from 'express';
+
+@Controller('.well-known')
+export class SecurityController {
+  @Get('security.txt')
+  getSecurityTxt(@Res() res: Response) {
+    res.type('text/plain').send(
+      `Contact: security@yourdomain.com
+Policy: https://yourdomain.com/security-policy
+Acknowledgments: https://yourdomain.com/security-acknowledgments`
+    );
+  }
+}
diff --git a/package-lock.json b/package-lock.json
index 4257410..79a6928 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,7 @@
         "@nestjs/common": "^11.1.14",
         "@nestjs/core": "^11.1.14",
         "@tanstack/react-query": "^5.90.21",
+        "compression": "^1.8.1",
         "framer-motion": "^12.34.3",
         "minimatch": "^10.1.1",
         "reflect-metadata": "^0.2.2",
@@ -8021,6 +8022,60 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/compressible": {
+      "version": "2.0.18",
+      "resolved": "https://registry.npmjs.org/compressible/-/compressible-2.0.18.tgz",
+      "integrity": "sha512-AF3r7P5dWxL8MxyITRMlORQNaOA2IkAFaTr4k7BUumjPtRpGDTZpl0Pb1XCO6JeDCBdp126Cgs9sMxqSjgYyRg==",
+      "license": "MIT",
+      "dependencies": {
+        "mime-db": ">= 1.43.0 < 2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/compression": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/compression/-/compression-1.8.1.tgz",
+      "integrity": "sha512-9mAqGPHLakhCLeNyxPkK4xVo746zQ/czLH1Ky+vkitMnWfWZps8r0qXuwhwizagCRttsL4lfG4pIOvaWLpAP0w==",
+      "license": "MIT",
+      "dependencies": {
+        "bytes": "3.1.2",
+        "compressible": "~2.0.18",
+        "debug": "2.6.9",
+        "negotiator": "~0.6.4",
+        "on-headers": "~1.1.0",
+        "safe-buffer": "5.2.1",
+        "vary": "~1.1.2"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
+    "node_modules/compression/node_modules/debug": {
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+      "license": "MIT",
+      "dependencies": {
+        "ms": "2.0.0"
+      }
+    },
+    "node_modules/compression/node_modules/ms": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+      "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==",
+      "license": "MIT"
+    },
+    "node_modules/compression/node_modules/negotiator": {
+      "version": "0.6.4",
+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.4.tgz",
+      "integrity": "sha512-myRT3DiWPHqho5PrJaIRyaMv2kgYf0mUVgBNOYMuCH5Ki1yEiQaf/ZJuQ62nvpc44wL5WDbTX7yGJi1Neevw8w==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -14300,6 +14355,15 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/on-headers": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/on-headers/-/on-headers-1.1.0.tgz",
+      "integrity": "sha512-737ZY3yNnXy37FHkQxPzt4UZ2UWPWiCZWLvFZ4fu5cueciegX0zGPnrlY6bwRg4FdQOe9YU8MkmJwGhoMybl8A==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/once": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
diff --git a/package.json b/package.json
index e8233f0..94643ec 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
     "@nestjs/common": "^11.1.14",
     "@nestjs/core": "^11.1.14",
     "@tanstack/react-query": "^5.90.21",
+    "compression": "^1.8.1",
     "framer-motion": "^12.34.3",
     "minimatch": "^10.1.1",
     "reflect-metadata": "^0.2.2",