Email Gateway Content Inspection

Email is second only to removable storage as the most common cause of data leakage.* It’s estimated that one in five outgoing emails contains data that poses a legal, financial or regulatory risk.

Given email’s centrality to business communications, organisations need high-quality scanning for their message traffic to check for potential violations (accidental or otherwise) without hampering business-critical data flows.

The MIMEsweeper content engine has the capacity to perform deep content inspection; for email traffic, this means visibility of:

  • Message headers
  • Senders and recipients
  • Subject lines
  • Message bodies
  • Attachments and their contents
  • Headers and footers of documents
  • Meta data with documents such as Microsoft File Classification Tags author, title and creation date

The content engine is responsible for the true-file type detection and also text extraction and scanning. Scanning for textual items within messages and attachments allows for the detection of:

  • Social security numbers
  • Credit card numbers
  • Banking codes
  • Profanity
  • Confidentiality clauses
  • Customer defined expressions and regular expressions
  • Expressions based around Boolean (AND, OR, XOR, ANDNOT) and positional operators (NEAR, BEFORE, AFTER, and FOLLOWEDBY)
  • Dictionaries containing expressions that can be created by customers; pre-defined dictionaries are also available, including for GLBA, HIPAA, SOX and PCI.