Using pull_request_target instead of pull_request poses a security risk, especially in a security scanning workflow that has access to secrets (OPENAI_API_KEY, TRAINING_DATA_*). This trigger runs with repository write permissions and access to secrets even for external contributors, potentially allowing malicious actors to exfiltrate secrets or modify the repository.

Using pull_request_target instead of pull_request can be a security risk as it runs with write permissions in the context of the target repository. This allows potentially malicious code from external contributors to access secrets and modify the repository. Consider using pull_request with explicit checkout of the PR branch if write permissions are needed, or ensure proper input validation and sandboxing.