diff --git a/README.md b/README.md
index adb4563..c8c8539 100644
--- a/README.md
+++ b/README.md
@@ -143,4 +143,14 @@ bash scripts/run.sh
 Добавить нового пользователя: 
 ```
 ./build/release/add_user -username test -password 1234
-```
\ No newline at end of file
+```
+
+## Запуск фаззинга
+
+Сначала соберите приложение и инициализируйте тестовую базу (init_users).
+
+Далее:
+
+1. cd myfuzz
+ 
+2. ./run_fuzz.sh
diff --git a/myfuzz/myfuzz_test.go b/myfuzz/myfuzz_test.go
new file mode 100644
index 0000000..18567bf
--- /dev/null
+++ b/myfuzz/myfuzz_test.go
@@ -0,0 +1,35 @@
+package myfuzz
+
+import (
+	"testing"
+
+	"linux-auth/internal/auth"
+	"linux-auth/internal/db"
+)
+
+func FuzzAuth(f *testing.F) {
+	err := db.Init("test_data.db")
+	if err != nil {
+		f.Fatalf("DB init error: %v", err)
+	}
+	f.Cleanup(func() {
+		db.Close()
+	})
+
+	f.Add("admin", "admin")
+	f.Add("user", "password")
+	f.Add("", "")
+
+	f.Fuzz(func(t *testing.T, username string, password string) {
+		ok, err := auth.Authenticate(username, password)
+		if err != nil {
+			t.Errorf("For {username} {%q} and {password} {%q} error: %v", username, password, err)
+		}
+		if ok {
+			if (username == "admin" && password == "admin123") || (username == "user1" && password == "password1") {
+				return
+			}
+			t.Errorf("Unexpected login for {username} {%q} and {password} {%q}", username, password)
+		}
+	})
+}
diff --git a/myfuzz/run_fuzz.sh b/myfuzz/run_fuzz.sh
new file mode 100755
index 0000000..5b3b1d4
--- /dev/null
+++ b/myfuzz/run_fuzz.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+cp ../data/users.db test_data.db
+
+go test -fuzz=FuzzAuth -fuzztime=5m --parallel=1