zbook

No clear evidence of classic malware (no eval/exec, subprocesses, persistence, or obvious cross-domain exfiltration) is present in this fragment. The dominant risks are security/privacy and file handling: it stores email/password and authentication cookies in plaintext JSON files under ~/.zbook, and it saves a downloaded file using a remote-provided suggested filename without explicit sanitization. These issues increase the impact of any local compromise (weak permissions) or unexpected remote/download behavior, but they do not, by themselves, prove intentional malicious code in this module.