diff --git a/src/frostfs_testlib/resources/s3_acl_grants.py b/src/frostfs_testlib/resources/s3_acl_grants.py
index 37005e8..a716bc5 100644
--- a/src/frostfs_testlib/resources/s3_acl_grants.py
+++ b/src/frostfs_testlib/resources/s3_acl_grants.py
@@ -4,6 +4,6 @@ ALL_USERS_GROUP_READ_GRANT = {"Grantee": {"Type": "Group", "URI": ALL_USERS_GROU
 CANONICAL_USER_FULL_CONTROL_GRANT = {"Grantee": {"Type": "CanonicalUser"}, "Permission": "FULL_CONTROL"}
 
 # https://docs.aws.amazon.com/AmazonS3/latest/userguide/acl-overview.html#canned-acl
-PRIVATE_GRANTS = [CANONICAL_USER_FULL_CONTROL_GRANT]
-PUBLIC_READ_GRANTS = [CANONICAL_USER_FULL_CONTROL_GRANT, ALL_USERS_GROUP_READ_GRANT]
-PUBLIC_READ_WRITE_GRANTS = [CANONICAL_USER_FULL_CONTROL_GRANT, ALL_USERS_GROUP_WRITE_GRANT, ALL_USERS_GROUP_READ_GRANT]
+PRIVATE_GRANTS = []
+PUBLIC_READ_GRANTS = [ALL_USERS_GROUP_READ_GRANT]
+PUBLIC_READ_WRITE_GRANTS = [ALL_USERS_GROUP_WRITE_GRANT, ALL_USERS_GROUP_READ_GRANT]
diff --git a/src/frostfs_testlib/s3/aws_cli_client.py b/src/frostfs_testlib/s3/aws_cli_client.py
index 3568037..ae9254c 100644
--- a/src/frostfs_testlib/s3/aws_cli_client.py
+++ b/src/frostfs_testlib/s3/aws_cli_client.py
@@ -1,7 +1,6 @@
 import json
 import logging
 import os
-import uuid
 from datetime import datetime
 from time import sleep
 from typing import Literal, Optional, Union
@@ -11,6 +10,7 @@ from frostfs_testlib.resources.common import ASSETS_DIR, MAX_REQUEST_ATTEMPTS, R
 from frostfs_testlib.s3.interfaces import S3ClientWrapper, VersioningStatus, _make_objs_dict
 from frostfs_testlib.shell import CommandOptions
 from frostfs_testlib.shell.local_shell import LocalShell
+from frostfs_testlib.utils import string_utils
 
 # TODO: Refactor this code to use shell instead of _cmd_run
 from frostfs_testlib.utils.cli_utils import _configure_aws_cli
@@ -68,7 +68,7 @@ class AwsCliClient(S3ClientWrapper):
         location_constraint: Optional[str] = None,
     ) -> str:
         if bucket is None:
-            bucket = str(uuid.uuid4())
+            bucket = string_utils.unique_name("bucket-")
 
         if object_lock_enabled_for_bucket is None:
             object_lock = ""
@@ -229,7 +229,7 @@ class AwsCliClient(S3ClientWrapper):
         if bucket is None:
             bucket = source_bucket
         if key is None:
-            key = os.path.join(os.getcwd(), str(uuid.uuid4()))
+            key = string_utils.unique_name("copy-object-")
         copy_source = f"{source_bucket}/{source_key}"
 
         cmd = (
@@ -315,7 +315,7 @@ class AwsCliClient(S3ClientWrapper):
         object_range: Optional[tuple[int, int]] = None,
         full_output: bool = False,
     ) -> dict | TestFile:
-        test_file = TestFile(os.path.join(os.getcwd(), ASSETS_DIR, str(uuid.uuid4())))
+        test_file = TestFile(os.path.join(os.getcwd(), ASSETS_DIR, string_utils.unique_name("dl-object-")))
         version = f" --version-id {version_id}" if version_id else ""
         cmd = (
             f"aws {self.common_flags} s3api get-object --bucket {bucket} --key {key} "
diff --git a/src/frostfs_testlib/s3/boto3_client.py b/src/frostfs_testlib/s3/boto3_client.py
index a8a7828..150570c 100644
--- a/src/frostfs_testlib/s3/boto3_client.py
+++ b/src/frostfs_testlib/s3/boto3_client.py
@@ -1,7 +1,6 @@
 import json
 import logging
 import os
-import uuid
 from datetime import datetime
 from functools import wraps
 from time import sleep
@@ -16,6 +15,7 @@ from mypy_boto3_s3 import S3Client
 from frostfs_testlib import reporter
 from frostfs_testlib.resources.common import ASSETS_DIR, MAX_REQUEST_ATTEMPTS, RETRY_MODE, S3_SYNC_WAIT_TIME
 from frostfs_testlib.s3.interfaces import S3ClientWrapper, VersioningStatus, _make_objs_dict
+from frostfs_testlib.utils import string_utils
 
 # TODO: Refactor this code to use shell instead of _cmd_run
 from frostfs_testlib.utils.cli_utils import _configure_aws_cli, log_command_execution
@@ -115,7 +115,7 @@ class Boto3ClientWrapper(S3ClientWrapper):
         location_constraint: Optional[str] = None,
     ) -> str:
         if bucket is None:
-            bucket = str(uuid.uuid4())
+            bucket = string_utils.unique_name("bucket-")
 
         params = {"Bucket": bucket}
         if object_lock_enabled_for_bucket is not None:
@@ -439,7 +439,7 @@ class Boto3ClientWrapper(S3ClientWrapper):
         if bucket is None:
             bucket = source_bucket
         if key is None:
-            key = os.path.join(os.getcwd(), str(uuid.uuid4()))
+            key = string_utils.unique_name("copy-object-")
         copy_source = f"{source_bucket}/{source_key}"
 
         params = {
@@ -476,7 +476,7 @@ class Boto3ClientWrapper(S3ClientWrapper):
         if full_output:
             return response
 
-        test_file = TestFile(os.path.join(os.getcwd(), ASSETS_DIR, str(uuid.uuid4())))
+        test_file = TestFile(os.path.join(os.getcwd(), ASSETS_DIR, string_utils.unique_name("dl-object-")))
         with open(test_file, "wb") as file:
             chunk = response["Body"].read(1024)
             while chunk:
diff --git a/src/frostfs_testlib/utils/file_utils.py b/src/frostfs_testlib/utils/file_utils.py
index e01ce31..c2b497f 100644
--- a/src/frostfs_testlib/utils/file_utils.py
+++ b/src/frostfs_testlib/utils/file_utils.py
@@ -6,6 +6,7 @@ from typing import Any, Optional
 
 from frostfs_testlib import reporter
 from frostfs_testlib.resources.common import ASSETS_DIR
+from frostfs_testlib.utils import string_utils
 
 logger = logging.getLogger("NeoLogger")
 
@@ -41,7 +42,9 @@ def ensure_directory_opener(path, flags):
     return os.open(path, flags)
 
 
-@reporter.step("Generate file with size {size}")
+# TODO: Do not add {size} to title yet, since it produces dynamic info in top level steps
+# Use object_size dt in future as argument
+@reporter.step("Generate file")
 def generate_file(size: int) -> TestFile:
     """Generates a binary file with the specified size in bytes.
 
@@ -51,7 +54,7 @@ def generate_file(size: int) -> TestFile:
     Returns:
         The path to the generated file.
     """
-    test_file = TestFile(os.path.join(ASSETS_DIR, str(uuid.uuid4())))
+    test_file = TestFile(os.path.join(ASSETS_DIR, string_utils.unique_name("object-")))
     with open(test_file, "wb", opener=ensure_directory_opener) as file:
         file.write(os.urandom(size))
     logger.info(f"File with size {size} bytes has been generated: {test_file}")
@@ -59,7 +62,9 @@ def generate_file(size: int) -> TestFile:
     return test_file
 
 
-@reporter.step("Generate file with content of size {size}")
+# TODO: Do not add {size} to title yet, since it produces dynamic info in top level steps
+# Use object_size dt in future as argument
+@reporter.step("Generate file with content")
 def generate_file_with_content(
     size: int,
     file_path: Optional[str | TestFile] = None,
diff --git a/src/frostfs_testlib/utils/string_utils.py b/src/frostfs_testlib/utils/string_utils.py
index a80192c..d8e91a4 100644
--- a/src/frostfs_testlib/utils/string_utils.py
+++ b/src/frostfs_testlib/utils/string_utils.py
@@ -1,12 +1,26 @@
 import random
 import re
 import string
+from datetime import datetime
 
 ONLY_ASCII_LETTERS = string.ascii_letters
 DIGITS_AND_ASCII_LETTERS = string.ascii_letters + string.digits
 NON_DIGITS_AND_LETTERS = string.punctuation
 
 
+def unique_name(prefix: str = ""):
+    """
+    Generate unique short name of anything with prefix.
+    This should be unique in scope of multiple runs
+
+    Args:
+        prefix: prefix for unique name generation
+    Returns:
+        unique name string
+    """
+    return f"{prefix}{hex(int(datetime.now().timestamp() * 1000000))}"
+
+
 def random_string(length: int = 5, source: str = ONLY_ASCII_LETTERS):
     """
     Generate random string from source letters list