If a file promises an entire database of postal codes but is suspiciously small (e.g., a few kilobytes), it might be a corrupted file or a malicious payload.

Before opening any unknown archive, move the file into an isolated virtual environment or sandbox. This prevents any potential malicious scripts from accessing your primary operating system or personal data. 2. Run an Advanced Antivirus Scan

Before you download any file, especially one containing postal code data, keep these points in mind: