security-review

Potential secret exposure: AWS access-key and secret-key values are hardcoded in config/settings.py. They resemble public AWS example placeholders, so active credential exposure is unconfirmed; if these are real, remove them and rotate them immediately. No malicious behavior is evident; severity is potentially P0 if the credentials are valid.

This code stores PHI, including diagnosis, SSN, and treatment notes, in plaintext under `/data/patients/` and returns records without checking whether `requester` is authorized; it also has no access audit logging. Unvalidated IDs in file paths may allow path traversal. These are significant confidentiality and HIPAA safeguard risks, but the fragment does not show malicious intent or data exfiltration; encrypt PHI at rest, enforce authorization, validate IDs, and audit access.

High-severity (P0) unsafe deserialization: load_session passes attacker-controlled HTTP cookie data to pickle.loads, which can enable arbitrary code execution. Replace pickle with a safe serialization format, such as signed JSON; no exploit or payload is included.

P1 severity: app.log line 1 exposes a customer name, email address, and full payment-card number in plaintext. Redact or omit the name and email, and log only an appropriately masked card suffix or omit the card data. No executable malware behavior is present in the supplied text.