AntiSPIT™ Technology

Eyeball's AntiSPIT Technology is fully compliant with SIP-based (RFC 3261) VoIP environments. On the server-side, it is integrated into the latest version of the Eyeball SIP Proxy Server and is also available as a standalone Eyeball AntiSPIT™ Server, which interoperates with existing SIP server installations. Additional client protection is provided in the latest version of the Eyeball MessengerSDK.

For bulk calling to be attractive to potential "spitters", they need to make a large number of calls to a large number of callees within a short period of time. This is restricted by our AntiSPIT Technology by limiting the number of calls output and calls received for a single user (e.g., based on routable identity such as SIP URI) or a hardware device (e.g., based on IP address). The technology monitors call patterns, SPIT events, and other relevant data to control calling rate limits of callers. This dynamic approach limits only callers showing suspicious behaviour ensuring legitimate callers will not be affected while SPIT is effectively prevented.

Mass calling requires a large number of callees. With the AntiSPIT Technology, a unique callee limit can be employed to restrict the number of unique callees for callers or caller groups.

The AntiSPIT Technology employs a dynamic calling rating system. The algorithm combines various criteria related to SPIT (e.g. caller-callee relationship, call location) and combines this information into a single value used as the "dynamic calling rate limit" for each caller. Once the calling rate limit is exceeded, further calls can be blocked, challenged, or forwarded with a tag to the callee. Initially, callers are not limited in their capability to make calls. Only incidents related to SPIT calls lead to a reduction of the calling rate. Using this mechanism, only non-complying callers are affected by a reduction of their capability to carry out further calls.