diff --git a/.changes/unreleased/Under the Hood-20241103-212520.yaml b/.changes/unreleased/Under the Hood-20241103-212520.yaml
new file mode 100644
index 00000000..c4f461ba
--- /dev/null
+++ b/.changes/unreleased/Under the Hood-20241103-212520.yaml	
@@ -0,0 +1,7 @@
+kind: Under the Hood
+body: Enable SSL verification by default
+time: 2024-11-03T21:25:20.671327+08:00
+custom:
+  Author: mdesmet
+  Issue: "441"
+  PR: "442"
diff --git a/dbt/adapters/trino/connections.py b/dbt/adapters/trino/connections.py
index f2d49ad9..afe8a14f 100644
--- a/dbt/adapters/trino/connections.py
+++ b/dbt/adapters/trino/connections.py
@@ -6,7 +6,7 @@
 from dataclasses import dataclass, field
 from datetime import date, datetime
 from enum import Enum
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List, Optional, Union
 
 import sqlparse
 import trino
@@ -99,7 +99,7 @@ class TrinoNoneCredentials(TrinoCredentials):
     user: str
     client_tags: Optional[List[str]] = None
     roles: Optional[Dict[str, str]] = None
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_scheme: HttpScheme = HttpScheme.HTTP
     http_headers: Optional[Dict[str, str]] = None
     session_properties: Dict[str, Any] = field(default_factory=dict)
@@ -124,7 +124,7 @@ class TrinoCertificateCredentials(TrinoCredentials):
     user: Optional[str] = None
     client_tags: Optional[List[str]] = None
     roles: Optional[Dict[str, str]] = None
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_headers: Optional[Dict[str, str]] = None
     session_properties: Dict[str, Any] = field(default_factory=dict)
     prepared_statements_enabled: bool = PREPARED_STATEMENTS_ENABLED_DEFAULT
@@ -154,7 +154,7 @@ class TrinoLdapCredentials(TrinoCredentials):
     impersonation_user: Optional[str] = None
     client_tags: Optional[List[str]] = None
     roles: Optional[Dict[str, str]] = None
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_headers: Optional[Dict[str, str]] = None
     session_properties: Dict[str, Any] = field(default_factory=dict)
     prepared_statements_enabled: bool = PREPARED_STATEMENTS_ENABLED_DEFAULT
@@ -185,7 +185,7 @@ class TrinoKerberosCredentials(TrinoCredentials):
     krb5_config: Optional[str] = None
     service_name: Optional[str] = "trino"
     mutual_authentication: Optional[bool] = False
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_headers: Optional[Dict[str, str]] = None
     force_preemptive: Optional[bool] = False
     hostname_override: Optional[str] = None
@@ -227,7 +227,7 @@ class TrinoJwtCredentials(TrinoCredentials):
     user: Optional[str] = None
     client_tags: Optional[List[str]] = None
     roles: Optional[Dict[str, str]] = None
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_headers: Optional[Dict[str, str]] = None
     session_properties: Dict[str, Any] = field(default_factory=dict)
     prepared_statements_enabled: bool = PREPARED_STATEMENTS_ENABLED_DEFAULT
@@ -253,7 +253,7 @@ class TrinoOauthCredentials(TrinoCredentials):
     user: Optional[str] = None
     client_tags: Optional[List[str]] = None
     roles: Optional[Dict[str, str]] = None
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_headers: Optional[Dict[str, str]] = None
     session_properties: Dict[str, Any] = field(default_factory=dict)
     prepared_statements_enabled: bool = PREPARED_STATEMENTS_ENABLED_DEFAULT
@@ -282,7 +282,7 @@ class TrinoOauthConsoleCredentials(TrinoCredentials):
     user: Optional[str] = None
     client_tags: Optional[List[str]] = None
     roles: Optional[Dict[str, str]] = None
-    cert: Optional[str] = None
+    cert: Optional[Union[str, bool]] = True
     http_headers: Optional[Dict[str, str]] = None
     session_properties: Dict[str, Any] = field(default_factory=dict)
     prepared_statements_enabled: bool = PREPARED_STATEMENTS_ENABLED_DEFAULT
diff --git a/tests/functional/adapter/test_insecure_warnings.py b/tests/functional/adapter/test_insecure_warnings.py
new file mode 100644
index 00000000..f35ac554
--- /dev/null
+++ b/tests/functional/adapter/test_insecure_warnings.py
@@ -0,0 +1,18 @@
+import warnings
+
+import pytest
+from dbt.tests.util import run_dbt
+from urllib3.exceptions import InsecureRequestWarning
+
+
+@pytest.mark.skip_profile("trino_starburst")
+class TestInsecureWarnings:
+    def test_table_properties(self, project):
+        with warnings.catch_warnings(record=True) as w:
+            dbt_args = ["show", "--inline", "select 1"]
+            run_dbt(dbt_args)
+
+            # Check if not any InsecureRequestWarning was raised
+            assert not any(
+                issubclass(warning.category, InsecureRequestWarning) for warning in w
+            ), "InsecureRequestWarning was not raised"