diff --git a/src/main/java/com/epam/izh/rd/online/exception/NotAccessException.java b/src/main/java/com/epam/izh/rd/online/exception/NotAccessException.java
new file mode 100644
index 0000000..4c7d4cd
--- /dev/null
+++ b/src/main/java/com/epam/izh/rd/online/exception/NotAccessException.java
@@ -0,0 +1,18 @@
+package com.epam.izh.rd.online.exception;
+
+public class NotAccessException extends Exception {
+    public NotAccessException() {
+    }
+
+    public NotAccessException(String message) {
+        super(message);
+    }
+
+    public NotAccessException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public NotAccessException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/src/main/java/com/epam/izh/rd/online/exception/NotCorrectPasswordException.java b/src/main/java/com/epam/izh/rd/online/exception/NotCorrectPasswordException.java
new file mode 100644
index 0000000..8608083
--- /dev/null
+++ b/src/main/java/com/epam/izh/rd/online/exception/NotCorrectPasswordException.java
@@ -0,0 +1,18 @@
+package com.epam.izh.rd.online.exception;
+
+public class NotCorrectPasswordException extends Exception {
+    public NotCorrectPasswordException() {
+    }
+
+    public NotCorrectPasswordException(String message) {
+        super(message);
+    }
+
+    public NotCorrectPasswordException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public NotCorrectPasswordException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/src/main/java/com/epam/izh/rd/online/exception/SimplePasswordException.java b/src/main/java/com/epam/izh/rd/online/exception/SimplePasswordException.java
new file mode 100644
index 0000000..8cedc5d
--- /dev/null
+++ b/src/main/java/com/epam/izh/rd/online/exception/SimplePasswordException.java
@@ -0,0 +1,19 @@
+package com.epam.izh.rd.online.exception;
+
+public class SimplePasswordException extends Exception{
+
+    public SimplePasswordException() {
+    }
+
+    public SimplePasswordException(String message) {
+        super(message);
+    }
+
+    public SimplePasswordException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public SimplePasswordException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/src/main/java/com/epam/izh/rd/online/exception/UserAlreadyRegisteredException.java b/src/main/java/com/epam/izh/rd/online/exception/UserAlreadyRegisteredException.java
new file mode 100644
index 0000000..52888ea
--- /dev/null
+++ b/src/main/java/com/epam/izh/rd/online/exception/UserAlreadyRegisteredException.java
@@ -0,0 +1,19 @@
+package com.epam.izh.rd.online.exception;
+
+public class UserAlreadyRegisteredException extends Exception {
+
+    public UserAlreadyRegisteredException() {
+    }
+
+    public UserAlreadyRegisteredException(String message) {
+        super(message);
+    }
+
+    public UserAlreadyRegisteredException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public UserAlreadyRegisteredException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/src/main/java/com/epam/izh/rd/online/exception/UserNotFoundException.java b/src/main/java/com/epam/izh/rd/online/exception/UserNotFoundException.java
new file mode 100644
index 0000000..d72ea00
--- /dev/null
+++ b/src/main/java/com/epam/izh/rd/online/exception/UserNotFoundException.java
@@ -0,0 +1,20 @@
+package com.epam.izh.rd.online.exception;
+
+public class UserNotFoundException extends Exception {
+
+
+    public UserNotFoundException() {
+    }
+
+    public UserNotFoundException(String message) {
+        super(message);
+    }
+
+    public UserNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public UserNotFoundException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/src/main/java/com/epam/izh/rd/online/service/AuthenticationService.java b/src/main/java/com/epam/izh/rd/online/service/AuthenticationService.java
index bcb09a7..2dcd008 100644
--- a/src/main/java/com/epam/izh/rd/online/service/AuthenticationService.java
+++ b/src/main/java/com/epam/izh/rd/online/service/AuthenticationService.java
@@ -1,6 +1,8 @@
 package com.epam.izh.rd.online.service;
 
 import com.epam.izh.rd.online.entity.User;
+import com.epam.izh.rd.online.exception.NotCorrectPasswordException;
+import com.epam.izh.rd.online.exception.UserNotFoundException;
 import com.epam.izh.rd.online.repository.IUserRepository;
 
 public class AuthenticationService implements IAuthenticationService {
@@ -25,14 +27,16 @@ public AuthenticationService(IUserRepository userRepository) {
      * @param user - пользователь проходящий авторизацию
      */
     @Override
-    public User login(User user) {
+    public User login(User user) throws UserNotFoundException, NotCorrectPasswordException {
         // Находим пользователя в базе
         User foundUser = userRepository.findByLogin(user.getLogin());
 
-        //
-        // Здесь необходимо реализовать перечисленные выше проверки
-        //
-
+        if (foundUser == null) {
+            throw new UserNotFoundException("Пользователь с таким логином не найден");
+        }
+        if (!foundUser.getPassword().equals(user.getPassword())) {
+            throw new NotCorrectPasswordException("Пароль введен неверно!");
+        }
         // Устанавливаем найденного пользователя, который прошел все проверки, как вошедшего в систему.
         CurrentUserManager.setCurrentLoggedInUser(foundUser);
 
diff --git a/src/main/java/com/epam/izh/rd/online/service/IAuthenticationService.java b/src/main/java/com/epam/izh/rd/online/service/IAuthenticationService.java
index 3f296c3..7840306 100644
--- a/src/main/java/com/epam/izh/rd/online/service/IAuthenticationService.java
+++ b/src/main/java/com/epam/izh/rd/online/service/IAuthenticationService.java
@@ -1,9 +1,11 @@
 package com.epam.izh.rd.online.service;
 
 import com.epam.izh.rd.online.entity.User;
+import com.epam.izh.rd.online.exception.NotCorrectPasswordException;
+import com.epam.izh.rd.online.exception.UserNotFoundException;
 
 public interface IAuthenticationService {
-    User login(User user);
+    User login(User user) throws UserNotFoundException, NotCorrectPasswordException;
 
     void logout();
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/IUserService.java b/src/main/java/com/epam/izh/rd/online/service/IUserService.java
index de62d43..5cc0fcb 100644
--- a/src/main/java/com/epam/izh/rd/online/service/IUserService.java
+++ b/src/main/java/com/epam/izh/rd/online/service/IUserService.java
@@ -1,10 +1,13 @@
 package com.epam.izh.rd.online.service;
 
 import com.epam.izh.rd.online.entity.User;
+import com.epam.izh.rd.online.exception.NotAccessException;
+import com.epam.izh.rd.online.exception.SimplePasswordException;
+import com.epam.izh.rd.online.exception.UserAlreadyRegisteredException;
 
 public interface IUserService {
 
-    User register(User user);
+    User register(User user) throws UserAlreadyRegisteredException, SimplePasswordException;
 
-    void delete(String login);
+    void delete(String login) throws NotAccessException;
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/UserService.java b/src/main/java/com/epam/izh/rd/online/service/UserService.java
index 78c39ed..7a63951 100644
--- a/src/main/java/com/epam/izh/rd/online/service/UserService.java
+++ b/src/main/java/com/epam/izh/rd/online/service/UserService.java
@@ -1,6 +1,9 @@
 package com.epam.izh.rd.online.service;
 
 import com.epam.izh.rd.online.entity.User;
+import com.epam.izh.rd.online.exception.NotAccessException;
+import com.epam.izh.rd.online.exception.SimplePasswordException;
+import com.epam.izh.rd.online.exception.UserAlreadyRegisteredException;
 import com.epam.izh.rd.online.repository.IUserRepository;
 import com.epam.izh.rd.online.repository.UserRepository;
 
@@ -30,11 +33,20 @@ public UserService(IUserRepository userRepository) {
      * @param user - даныне регистрирующегося пользователя
      */
     @Override
-    public User register(User user) {
+    public User register(User user) throws UserAlreadyRegisteredException, SimplePasswordException {
 
-        //
-        // Здесь необходимо реализовать перечисленные выше проверки
-        //
+        if (user.getPassword().equals("") || user.getPassword() == null
+                || user.getLogin().equals("") || user.getLogin() == null) {
+            throw new IllegalArgumentException("Ошибка в заполнении полей");
+        }
+
+        if (userRepository.findByLogin(user.getLogin()) != null) {
+            throw new UserAlreadyRegisteredException("Пользователь с логином " + user.getLogin() + " уже зарегистрирован");
+        }
+
+        if (user.getPassword().replaceAll("\\d+", "").isEmpty()){
+            throw new SimplePasswordException("Пароль не соответствует требованиям безопасности");
+        }
 
         // Если все проверки успешно пройдены, сохраняем пользователя в базу
         return userRepository.save(user);
@@ -58,13 +70,14 @@ public User register(User user) {
      *
      * @param login
      */
-    public void delete(String login) {
-
-        // Здесь необходимо сделать доработку метод
+    public void delete(String login) throws NotAccessException {
 
+        try {
             userRepository.deleteByLogin(login);
-
-        // Здесь необходимо сделать доработку метода
+        }
+        catch (UnsupportedOperationException e){
+            throw new NotAccessException("Недостаточно прав для выполнения операции");
+        }
 
     }