[VOIPSEC] Anyone aware of public disclosures of security incidents related to SIP trunks?

[Dan York]

VOIPSEC readers,

Can anyone point me to any public disclosures of security incidents
related to SIP trunks?  (i.e. SIP connections from an on-premise
IP-PBX/callserver to a SIP service provider)  Companies that lost phone
service due to a DoS against a SIP service provider?  Disclosure of
information related to info captured from a SIP trunk?  Reported toll
fraud due to abuse of a SIP connection?  (The famous Pena/Moore case of
2006 was toll fraud over H.323.)

I've been doing some digging but so far haven't found any public
mentions of actual incidents.  So either I'm not searching on the right
terms or I suspect any incidents aren't being reported publicly (or are
being classified as some other kind of incidents).

I ask because I'm doing some writing and would like to include a "real"
incident related to SIP trunking security instead of making up a
fictitious "hypothetical" scenario.

Any pointers would be greatly appreciated.

Thanks,
Dan

-- 
Dan York  dyork at lodestar2.com
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