1. A message being analyzed is used to select a collection of properties, which can be used to identify the message. The set of properties may include header information, text fragments and other information about the message being processed.
2. Filtration server uses the properties thus collected to generate a small UDS request and sends it to one of UDS servers of Kaspersky Lab. Since the product does not transmit to external servers any data that could allow viewing the recipients or the text of the processed mail, the use of this method does not pose any risk to the safety or