diff --git a/packages/api-gateway/src/Controller/AuthMiddleware.ts b/packages/api-gateway/src/Controller/AuthMiddleware.ts
index 066e24289..654f4b48e 100644
--- a/packages/api-gateway/src/Controller/AuthMiddleware.ts
+++ b/packages/api-gateway/src/Controller/AuthMiddleware.ts
@@ -49,6 +49,8 @@ export abstract class AuthMiddleware extends BaseMiddleware {
           return
         }
 
+        this.logger.debug('[AuthMiddleware] Fetched cross-service token from underlying service')
+
         crossServiceToken = (authResponse.data as { authToken: string }).authToken
         crossServiceTokenFetchedFromCache = false
       }
diff --git a/packages/api-gateway/src/Service/gRPC/GRPCServiceProxy.ts b/packages/api-gateway/src/Service/gRPC/GRPCServiceProxy.ts
index 7791c7db5..d7161b214 100644
--- a/packages/api-gateway/src/Service/gRPC/GRPCServiceProxy.ts
+++ b/packages/api-gateway/src/Service/gRPC/GRPCServiceProxy.ts
@@ -37,6 +37,8 @@ export class GRPCServiceProxy implements ServiceProxyInterface {
         const metadata = new grpc.Metadata()
         metadata.set('x-shared-vault-owner-context', headers.sharedVaultOwnerContext ?? '')
 
+        this.logger.debug('[GRPCServiceProxy] Validating session via gRPC')
+
         this.sessionsClient.validate(
           request,
           metadata,
diff --git a/packages/auth/bin/server.ts b/packages/auth/bin/server.ts
index e496fb3be..ca08204d5 100644
--- a/packages/auth/bin/server.ts
+++ b/packages/auth/bin/server.ts
@@ -91,6 +91,7 @@ void container.load().then((container) => {
   const sessionsServer = new SessionsServer(
     container.get<AuthenticateRequest>(TYPES.Auth_AuthenticateRequest),
     container.get<CreateCrossServiceToken>(TYPES.Auth_CreateCrossServiceToken),
+    container.get<winston.Logger>(TYPES.Auth_Logger),
   )
 
   grpcServer.addService(SessionsService, {
diff --git a/packages/auth/src/Infra/gRPC/SessionsServer.ts b/packages/auth/src/Infra/gRPC/SessionsServer.ts
index 917903108..80340a369 100644
--- a/packages/auth/src/Infra/gRPC/SessionsServer.ts
+++ b/packages/auth/src/Infra/gRPC/SessionsServer.ts
@@ -6,17 +6,21 @@ import { AuthorizationHeader, ISessionsServer, SessionValidationResponse } from
 import { AuthenticateRequest } from '../../Domain/UseCase/AuthenticateRequest'
 import { User } from '../../Domain/User/User'
 import { CreateCrossServiceToken } from '../../Domain/UseCase/CreateCrossServiceToken/CreateCrossServiceToken'
+import { Logger } from 'winston'
 
 export class SessionsServer implements ISessionsServer {
   constructor(
     private authenticateRequest: AuthenticateRequest,
     private createCrossServiceToken: CreateCrossServiceToken,
+    private logger: Logger,
   ) {}
 
   async validate(
     call: grpc.ServerUnaryCall<AuthorizationHeader, SessionValidationResponse>,
     callback: grpc.sendUnaryData<SessionValidationResponse>,
   ): Promise<void> {
+    this.logger.debug('[SessionsServer] Validating session via gRPC')
+
     const authenticateRequestResponse = await this.authenticateRequest.execute({
       authorizationHeader: call.request.getBearerToken(),
     })
@@ -69,6 +73,8 @@ export class SessionsServer implements ISessionsServer {
     const response = new SessionValidationResponse()
     response.setCrossServiceToken(resultOrError.getValue())
 
+    this.logger.debug('[SessionsServer] Session validated via gRPC')
+
     callback(null, response)
   }
 }