diff --git a/lib/towerops/gaiia/sync.ex b/lib/towerops/gaiia/sync.ex
index 80ff1898..71eb4ebd 100644
--- a/lib/towerops/gaiia/sync.ex
+++ b/lib/towerops/gaiia/sync.ex
@@ -209,7 +209,10 @@ defmodule Towerops.Gaiia.Sync do
 
   defp humanize_sync_error(%Req.TransportError{reason: :econnrefused}), do: "Connection refused — unable to reach Gaiia"
 
-  defp humanize_sync_error(%Req.TransportError{reason: reason}), do: "Connection error: #{reason}"
+  defp humanize_sync_error(%Req.TransportError{reason: reason}) do
+    Logger.warning("Gaiia sync transport error: #{inspect(reason)}")
+    "Connection error — unable to establish a secure connection to Gaiia"
+  end
 
   defp humanize_sync_error(reason) when is_binary(reason), do: reason
 
@@ -224,6 +227,6 @@ defmodule Towerops.Gaiia.Sync do
 
   defp humanize_sync_error(reason) do
     Logger.warning("Gaiia sync failed with unexpected error: #{inspect(reason)}")
-    "An unexpected error occurred during sync: #{inspect(reason)}"
+    "An unexpected error occurred during sync"
   end
 end
diff --git a/lib/towerops/netbox/sync.ex b/lib/towerops/netbox/sync.ex
index 3d43689c..dcdacb67 100644
--- a/lib/towerops/netbox/sync.ex
+++ b/lib/towerops/netbox/sync.ex
@@ -235,7 +235,10 @@ defmodule Towerops.NetBox.Sync do
 
   defp humanize_sync_error(%Req.TransportError{reason: :econnrefused}), do: "Connection refused — unable to reach NetBox"
 
-  defp humanize_sync_error(%Req.TransportError{reason: reason}), do: "Connection error: #{reason}"
+  defp humanize_sync_error(%Req.TransportError{reason: reason}) do
+    Logger.warning("NetBox sync transport error: #{inspect(reason)}")
+    "Connection error — unable to establish a secure connection to NetBox"
+  end
 
   defp humanize_sync_error(reason) when is_binary(reason), do: reason
 
@@ -243,6 +246,6 @@ defmodule Towerops.NetBox.Sync do
 
   defp humanize_sync_error(reason) do
     Logger.warning("NetBox sync failed with unexpected error: #{inspect(reason)}")
-    "An unexpected error occurred during sync: #{inspect(reason)}"
+    "An unexpected error occurred during sync"
   end
 end
diff --git a/lib/towerops/sonar/sync.ex b/lib/towerops/sonar/sync.ex
index 56490876..78498777 100644
--- a/lib/towerops/sonar/sync.ex
+++ b/lib/towerops/sonar/sync.ex
@@ -78,6 +78,6 @@ defmodule Towerops.Sonar.Sync do
 
   defp humanize_sync_error(reason) do
     Logger.warning("Sonar sync failed with unexpected error: #{inspect(reason)}")
-    "An unexpected error occurred during sync: #{inspect(reason)}"
+    "An unexpected error occurred during sync"
   end
 end
diff --git a/lib/towerops/splynx/sync.ex b/lib/towerops/splynx/sync.ex
index 5880db36..25fd70b0 100644
--- a/lib/towerops/splynx/sync.ex
+++ b/lib/towerops/splynx/sync.ex
@@ -71,6 +71,6 @@ defmodule Towerops.Splynx.Sync do
 
   defp humanize_sync_error(reason) do
     Logger.warning("Splynx sync failed with unexpected error: #{inspect(reason)}")
-    "An unexpected error occurred during sync: #{inspect(reason)}"
+    "An unexpected error occurred during sync"
   end
 end
diff --git a/lib/towerops/visp/sync.ex b/lib/towerops/visp/sync.ex
index a059aeea..b8c2cc9b 100644
--- a/lib/towerops/visp/sync.ex
+++ b/lib/towerops/visp/sync.ex
@@ -74,6 +74,6 @@ defmodule Towerops.Visp.Sync do
 
   defp humanize_sync_error(reason) do
     Logger.warning("VISP sync failed with unexpected error: #{inspect(reason)}")
-    "An unexpected error occurred during sync: #{inspect(reason)}"
+    "An unexpected error occurred during sync"
   end
 end
diff --git a/mix.exs b/mix.exs
index 75584ddc..337b62f6 100644
--- a/mix.exs
+++ b/mix.exs
@@ -62,6 +62,7 @@ defmodule Towerops.MixProject do
       {:cbor, "~> 1.0"},
       {:protobuf, "~> 0.12"},
       {:req, "~> 0.5"},
+      {:castore, "~> 1.0"},
       {:sweet_xml, "~> 0.7"},
       {:yaml_elixir, "~> 2.9"},
       {:telemetry_metrics, "~> 1.0"},
diff --git a/mix.lock b/mix.lock
index 323e2a22..47825efb 100644
--- a/mix.lock
+++ b/mix.lock
@@ -4,6 +4,7 @@
   "argon2_elixir": {:hex, :argon2_elixir, "4.1.3", "4f28318286f89453364d7fbb53e03d4563fd7ed2438a60237eba5e426e97785f", [:make, :mix], [{:comeonin, "~> 5.3", [hex: :comeonin, repo: "hexpm", optional: false]}, {:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "7c295b8d8e0eaf6f43641698f962526cdf87c6feb7d14bd21e599271b510608c"},
   "bandit": {:hex, :bandit, "1.10.3", "1e5d168fa79ec8de2860d1b4d878d97d4fbbe2fdbe7b0a7d9315a4359d1d4bb9", [:mix], [{:hpax, "~> 1.0", [hex: :hpax, repo: "hexpm", optional: false]}, {:plug, "~> 1.18", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:thousand_island, "~> 1.0", [hex: :thousand_island, repo: "hexpm", optional: false]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "99a52d909c48db65ca598e1962797659e3c0f1d06e825a50c3d75b74a5e2db18"},
   "bunt": {:hex, :bunt, "1.0.0", "081c2c665f086849e6d57900292b3a161727ab40431219529f13c4ddcf3e7a44", [:mix], [], "hexpm", "dc5f86aa08a5f6fa6b8096f0735c4e76d54ae5c9fa2c143e5a1fc7c1cd9bb6b5"},
+  "castore": {:hex, :castore, "1.0.17", "4f9770d2d45fbd91dcf6bd404cf64e7e58fed04fadda0923dc32acca0badffa2", [:mix], [], "hexpm", "12d24b9d80b910dd3953e165636d68f147a31db945d2dcb9365e441f8b5351e5"},
   "cbor": {:hex, :cbor, "1.0.1", "39511158e8ea5a57c1fcb9639aaa7efde67129678fee49ebbda780f6f24959b0", [:mix], [], "hexpm", "5431acbe7a7908f17f6a9cd43311002836a34a8ab01876918d8cfb709cd8b6a2"},
   "cc_precompiler": {:hex, :cc_precompiler, "0.1.11", "8c844d0b9fb98a3edea067f94f616b3f6b29b959b6b3bf25fee94ffe34364768", [:mix], [{:elixir_make, "~> 0.7", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "3427232caf0835f94680e5bcf082408a70b48ad68a5f5c0b02a3bea9f3a075b9"},
   "certifi": {:hex, :certifi, "2.15.0", "0e6e882fcdaaa0a5a9f2b3db55b1394dba07e8d6d9bcad08318fb604c6839712", [:rebar3], [], "hexpm", "b147ed22ce71d72eafdad94f055165c1c182f61a2ff49df28bcc71d1d5b94a60"},