diff --git a/codex-rs/core/src/tools/runtimes/apply_patch.rs b/codex-rs/core/src/tools/runtimes/apply_patch.rs
index b839b05c44..26626f7053 100644
--- a/codex-rs/core/src/tools/runtimes/apply_patch.rs
+++ b/codex-rs/core/src/tools/runtimes/apply_patch.rs
@@ -31,6 +31,7 @@ use codex_protocol::protocol::ReviewDecision;
 use codex_sandboxing::SandboxType;
 use codex_sandboxing::SandboxablePreference;
 use codex_sandboxing::policy_transforms::effective_permission_profile;
+use codex_sandboxing::record_filesystem_sandbox_violation;
 use codex_utils_path_uri::PathUri;
 use futures::future::BoxFuture;
 use std::path::PathBuf;
@@ -267,6 +268,7 @@ impl ToolRuntime<ApplyPatchRequest, ApplyPatchRuntimeOutput> for ApplyPatchRunti
             timed_out: false,
         };
         if failed && is_likely_sandbox_denied(attempt.sandbox, &output) {
+            record_filesystem_sandbox_violation(attempt.sandbox, &output);
             return Err(ToolError::Codex(CodexErr::Sandbox(SandboxErr::Denied {
                 output: Box::new(output),
                 network_policy_decision: None,
diff --git a/codex-rs/sandboxing/src/violation.rs b/codex-rs/sandboxing/src/violation.rs
index f1622a8e0a..57d8a3a006 100644
--- a/codex-rs/sandboxing/src/violation.rs
+++ b/codex-rs/sandboxing/src/violation.rs
@@ -1,5 +1,6 @@
 use crate::SandboxType;
 use codex_network_proxy::BlockedRequest;
+use codex_network_proxy::NetworkMode;
 use codex_protocol::exec_output::ExecToolCallOutput;
 use tracing::warn;
 
@@ -86,6 +87,7 @@ pub struct NetworkSandboxViolation {
     pub reason: String,
     pub client: Option<String>,
     pub method: Option<String>,
+    pub mode: Option<NetworkMode>,
     pub protocol: String,
     pub decision: Option<String>,
     pub source: Option<String>,
@@ -100,6 +102,7 @@ impl NetworkSandboxViolation {
             reason: blocked.reason.clone(),
             client: blocked.client.clone(),
             method: blocked.method.clone(),
+            mode: blocked.mode,
             protocol: blocked.protocol.clone(),
             decision: blocked.decision.clone(),
             source: blocked.source.clone(),
@@ -179,12 +182,13 @@ pub fn record_sandbox_violation(event: &SandboxViolationEvent) {
         }
         SandboxViolationEvent::Network(violation) => {
             warn!(
-                "recorded sandbox violation: resource=network protocol={} host={} port={:?} reason={} method={:?} client={:?} decision={:?} source={:?}",
+                "recorded sandbox violation: resource=network protocol={} host={} port={:?} reason={} method={:?} mode={:?} client={:?} decision={:?} source={:?}",
                 violation.protocol,
                 violation.host,
                 violation.port,
                 violation.reason,
                 violation.method,
+                violation.mode,
                 violation.client,
                 violation.decision,
                 violation.source
@@ -228,9 +232,13 @@ fn extract_denied_path_from_text(text: &str) -> Option<String> {
     ];
 
     for line in text.lines() {
-        let lower = line.to_lowercase();
         for marker in PATH_MARKERS {
-            let Some(marker_start) = lower.find(marker) else {
+            let Some(marker_start) = line.match_indices(':').find_map(|(marker_start, _)| {
+                line.get(marker_start..)
+                    .and_then(|suffix| suffix.get(..marker.len()))
+                    .is_some_and(|candidate| candidate.eq_ignore_ascii_case(marker))
+                    .then_some(marker_start)
+            }) else {
                 continue;
             };
             let candidate_prefix = &line[..marker_start];
diff --git a/codex-rs/sandboxing/src/violation_tests.rs b/codex-rs/sandboxing/src/violation_tests.rs
index d7c2a89ba2..9c03af16bd 100644
--- a/codex-rs/sandboxing/src/violation_tests.rs
+++ b/codex-rs/sandboxing/src/violation_tests.rs
@@ -1,6 +1,7 @@
 use super::*;
 use codex_network_proxy::BlockedRequest;
 use codex_network_proxy::BlockedRequestArgs;
+use codex_network_proxy::NetworkMode;
 use codex_protocol::exec_output::ExecToolCallOutput;
 use codex_protocol::exec_output::StreamOutput;
 use pretty_assertions::assert_eq;
@@ -97,6 +98,27 @@ fn classifies_filesystem_violation_with_path() {
     );
 }
 
+#[test]
+fn classifies_filesystem_violation_with_unicode_before_marker() {
+    let output = make_exec_output(
+        /*exit_code*/ 1,
+        "",
+        "bash: /private/tmp/\u{130}-denied: Operation not permitted",
+        "",
+    );
+
+    assert_eq!(
+        classify_filesystem_sandbox_violation(SandboxType::MacosSeatbelt, &output),
+        Some(FileSystemSandboxViolation {
+            sandbox_type: SandboxType::MacosSeatbelt,
+            reason: FileSystemSandboxViolationReason::OperationNotPermitted,
+            path: Some("/private/tmp/\u{130}-denied".to_string()),
+            output_snippet: "bash: /private/tmp/\u{130}-denied: Operation not permitted"
+                .to_string(),
+        })
+    );
+}
+
 #[test]
 fn classifies_filesystem_violation_from_aggregated_output() {
     let output = make_exec_output(
@@ -152,7 +174,7 @@ fn converts_blocked_request_to_network_violation() {
         reason: "not_allowed".to_string(),
         client: Some("curl".to_string()),
         method: Some("CONNECT".to_string()),
-        mode: None,
+        mode: Some(NetworkMode::Limited),
         protocol: "https".to_string(),
         decision: Some("block".to_string()),
         source: Some("policy".to_string()),
@@ -166,6 +188,7 @@ fn converts_blocked_request_to_network_violation() {
             reason: "not_allowed".to_string(),
             client: Some("curl".to_string()),
             method: Some("CONNECT".to_string()),
+            mode: Some(NetworkMode::Limited),
             protocol: "https".to_string(),
             decision: Some("block".to_string()),
             source: Some("policy".to_string()),