SPIT (Spam over IP Telephony)

What is SPIT?

SPAM over IP Telephony, or SPIT for short, is the problem whereby users of video conferencing or IP telephony services receive unwanted calls from malicious callers. These calls often disrupt legitimate calls and conferences.

There are several motivation for these malicious callers, but the primary one is to identify video conferencing equipment and IP telephony services which are vulnerable to attack. Once compromised, these vulnerable systems are often then used to make phone calls such as the ones some people receive from people impersonating Microsoft technical support saying “Your computer has been infected” where they offer to clean your computer, but are in fact looking to take over your computer.

SPIT Current

Massey’s solution

Massey is currently in the process of identifying sources of legitimate video conference calls such as other New Zealand tertiary education institutions, Crown Research Institutions and other frequent callers, so calls from these sources can be allowed, and calls from unknown sources can be blocked. This is common practice at other New Zealand tertiary education institutions. There will also be a process by which access for new callers can be added.

The work for designing and implementing this solution is in progress at the moment, and there will be more communications in future once the solution is in place.


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