How DLP handles large files using IDM

book

Article ID: 160714

calendar_today

Updated On:

Products

Data Loss Prevention Endpoint Prevent Data Loss Prevention Network Monitor Data Loss Prevention Network Prevent for Email Data Loss Prevention Network Discover Data Loss Prevention Network Prevent for Web Data Loss Prevention Endpoint Discover

Issue/Introduction

IDM matching for large files

Resolution

Relevant versions:  ALL

DLP handles large IDM files as follows:

  • Less than 30 MB: DLP will match using its standard IDM technology, and inspect everything.
  • More than 30 MB:
    • If DLP can crack the file, it will treat the whole file as normal, and match using its standard IDM technology.
    • If DLP cannot crack the file (the most likely scenario), then DLP will truncate the file at 30 MB and treat that first 30MB as part of the normal IDM processing. DLP will then do an exact match on the remainder (like it was an image).