Quote from the article:
The bulk of the leaked data is a 337MB PST file containing the analyst’s emails.
In addition to that are images detailing the compromise of their One Drive account, Live account, LinkedIn account, geo-tracking of personal devices for at least a year, billing records and PayPal receipts, credentials for an engineering portal at FireEye, WebEx and JIRA portals, as well as Live and Amazon accounts. There are also records related to an alleged customer, Bank Hapoalim, and internal documentation and presentations, including one for the IDF (Israel Defense Forces) from 2016.
Hackers claim credit for alleged hack at Mandiant, publish dox on analyst | CSO Online