diff --git a/.gitignore b/.gitignore
index 23841a6..9ab1047 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 .idea
 .gradle
+.classpath
+.project
+.settings
+bin/
diff --git a/build.gradle b/build.gradle
index e9a013a..bf66a3c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,6 +12,15 @@ repositories {
 dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.2'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.2'
+    
+    compileOnly 'org.projectlombok:lombok:1.18.30'
+	annotationProcessor 'org.projectlombok:lombok:1.18.30'
+	
+	testCompileOnly 'org.projectlombok:lombok:1.18.30'
+	testAnnotationProcessor 'org.projectlombok:lombok:1.18.30'
+	
+	implementation group: 'org.slf4j', name: 'slf4j-api', version: '2.0.9'
+	implementation group: 'org.slf4j', name: 'slf4j-simple', version: '2.0.9'
 }
 
 test {
diff --git a/src/main/java/task_4/AvengersBase.java b/src/main/java/task_4/AvengersBase.java
new file mode 100644
index 0000000..0f6bda0
--- /dev/null
+++ b/src/main/java/task_4/AvengersBase.java
@@ -0,0 +1,43 @@
+package task_4;
+
+import lombok.extern.slf4j.Slf4j;
+import task_4.exceptions.SecurityBreachException;
+import task_4.exceptions.UnauthorizedAccessAttemptException;
+
+@Slf4j
+public class AvengersBase {
+
+	public void enterBase(Hero hero) {
+
+		if (hero == null) {
+			throw new IllegalArgumentException("Null args");
+		}
+
+		log.info("Start to check hero's credentials");
+		if (hero.getName().equals("Loki")) {
+			log.warn("Loki here!");
+			throw new SecurityBreachException("Loki try to enter!");
+		}
+
+		log.info("{} entered successful", hero.getName());
+
+	}
+
+	public String getSecretDocuments(Hero hero, String documentName) {
+
+		if (hero == null || documentName == null || documentName.isBlank()) {
+			throw new IllegalArgumentException("Null or blank args");
+		}
+
+		log.info("Start to check access to the document");
+
+		if (hero.getName().equals("Loki")) {
+			log.warn("Loki's access attempt to {}", documentName);
+			throw new UnauthorizedAccessAttemptException("Loki try to enter!");
+		}
+
+		log.info("{} got access to {}", hero.getName(), documentName);
+
+		return documentName;
+	}
+}
diff --git a/src/main/java/task_4/Hero.java b/src/main/java/task_4/Hero.java
new file mode 100644
index 0000000..2569095
--- /dev/null
+++ b/src/main/java/task_4/Hero.java
@@ -0,0 +1,13 @@
+package task_4;
+
+public class Hero {
+	private final String name;
+
+	public Hero(String name) {
+		this.name = name;
+	}
+
+	public String getName() {
+		return name;
+	}
+}
diff --git a/src/main/java/task_4/Task4.java b/src/main/java/task_4/Task4.java
new file mode 100644
index 0000000..9270f7c
--- /dev/null
+++ b/src/main/java/task_4/Task4.java
@@ -0,0 +1,65 @@
+package task_4;
+
+import lombok.extern.slf4j.Slf4j;
+import task_4.exceptions.SecurityBreachException;
+import task_4.exceptions.UnauthorizedAccessAttemptException;
+
+@Slf4j
+public class Task4 {
+	
+	public static void main(String[] args) {
+		
+		Hero hero1 = new Hero("Loki");
+		Hero hero2 = new Hero("Grut");
+		Hero heroNull = null;
+		
+		String doc = "Secret document";
+		String nullDoc = null;
+		String blankDoc = " ";
+		
+		AvengersBase avengersBase = new AvengersBase();
+		
+		try {
+			avengersBase.enterBase(heroNull);
+		} catch (IllegalArgumentException e) {
+			log.error(e.getMessage() + " during invoke enterBase()");
+		}
+		
+		try {
+			avengersBase.enterBase(hero1);
+		} catch (SecurityBreachException e) {
+			log.error(e.getMessage() + " during invoke enterBase()");
+		}
+		
+		avengersBase.enterBase(hero2);
+		
+		
+		try {
+			avengersBase.getSecretDocuments(heroNull, doc);
+		} catch (IllegalArgumentException e) {
+			log.error(e.getMessage() + " during invoke getSecretDocuments()");
+		}
+		
+		try {
+			avengersBase.getSecretDocuments(hero1, nullDoc);
+		} catch (IllegalArgumentException e) {
+			log.error(e.getMessage() + " during invoke getSecretDocuments()");
+		}
+		
+		try {
+			avengersBase.getSecretDocuments(hero1, blankDoc);
+		} catch (IllegalArgumentException e) {
+			log.error(e.getMessage() + " during invoke getSecretDocuments()");
+		}
+		
+		try {
+			avengersBase.getSecretDocuments(hero1, doc);
+		} catch (UnauthorizedAccessAttemptException e) {
+			log.error(e.getMessage() + " during invoke getSecretDocuments()");
+		}
+		
+		avengersBase.getSecretDocuments(hero2, doc);
+		
+	}
+
+}
diff --git a/src/main/java/task_4/exceptions/SecurityBreachException.java b/src/main/java/task_4/exceptions/SecurityBreachException.java
new file mode 100644
index 0000000..fcfca53
--- /dev/null
+++ b/src/main/java/task_4/exceptions/SecurityBreachException.java
@@ -0,0 +1,9 @@
+package task_4.exceptions;
+
+public class SecurityBreachException extends RuntimeException {
+
+	public SecurityBreachException(String message) {
+		super(message);
+	}
+
+}
diff --git a/src/main/java/task_4/exceptions/UnauthorizedAccessAttemptException.java b/src/main/java/task_4/exceptions/UnauthorizedAccessAttemptException.java
new file mode 100644
index 0000000..2df05ee
--- /dev/null
+++ b/src/main/java/task_4/exceptions/UnauthorizedAccessAttemptException.java
@@ -0,0 +1,9 @@
+package task_4.exceptions;
+
+public class UnauthorizedAccessAttemptException extends RuntimeException {
+
+	public UnauthorizedAccessAttemptException(String message) {
+		super(message);
+	}
+
+}