What is a log export?¶

A log export is a copy of selected records taken out of the source system into another format.

Common formats include CSV, JSON, XML, text, spreadsheets and provider-generated reports.

Avoid this assumption: That an export is the same thing as the complete original log. It is not necessarily.

An export reflects the options, filters and permissions used when it was created. The person producing it may have selected a time range, event type, account, device or set of visible columns. The export process may also rename fields, convert timestamps or flatten complex records.

An export can still be perfectly useful. It may allow investigators to preserve volatile records, search them, compare systems and share relevant material for review.

But the format matters. CSV files may lose nested relationships. Spreadsheets may alter long numbers, dates or leading zeros. PDF reports may show only what was visible on screen. Some exports contain summaries rather than individual source events.

Investigators should ask who created the export, from which system and using what account or permissions. Record the date of export, selected time range, filters, time zone and format. Ask whether hidden fields, archived records or excluded event types existed.

Preserve the export exactly as received before opening or re-saving it in software that could alter the contents. Create a separate working copy for sorting or annotation.

Where interpretation is important, obtain the field definitions and compare significant entries with the source system or a native export. If only a screenshot or manually copied table is available, record that limitation clearly.

Operational takeaway¶

A log export is a selected representation of source records, so investigators must establish how it was produced, what it includes and what may have been changed or omitted.