Zero-hour Protection Against Spam, Phishing and Other Email Threats

The Network Classifier uses data feeds from the Cloudmark trusted database of spam, phishing, and other email threats. It is the size and scope of this database, which fuels the training for the highest accuracy levels in Cloudmark solutions.

Cloudmark gateway solutions employ five fingerprinting algorithms - the same proprietary fingerprinting algorithms used in all Cloudmark solutions.

How Fingerprint Algorithms Work

• Cloudmark Immunity and Authority maintain an in-memory list of all known bad fingerprints.
• This list is updated every minute with the latest data from the Cloudmark Collaborative Network.
• As each message comes in, Cloudmark Immunity/Authority generates a list of fingerprints for the message and checks each against its cache of known bad fingerprints.
• If there is a match, the message is marked as spam.

Benefits of the Network Classifier

Real-time micro updates enable Cloudmark to:

• Respond to fast moving phishing attacks between 20 seconds to 3 minutes.
• Maintain the highest levels of accuracy on phishing emails as well as legitimate financial institution mailing.
• Handle new varieties of email malware proactively and automatically.
• Reduce false positives as there is no need to infer rules or heuristics.
• Not require manual analysis required with a fully automated approach.