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Over the weekend, 2600’s The Last HOPE (Hackers On Planet
Earth) conference launched what this reporter dubs “Security Season.”
Be prepared for an onslaught of computer security stories featuring
oh-so-clever hackers between now and the wrap-up of DEFCON 16 in mid-August.

At the conference, hacker celebrity Kevin Mitnick appeared
to plug his coming tell-all book and demonstrated a script for Digium’s
Asterisk IP PBX to show Caller ID information for someone calling even if the
phone’s Caller ID is set to “private.”

Other presentations at the conference went much deeper into
VoIP security. Blake Cornell and Jeremy McNamara discussed how a number of
foreign governments and ISPs are blocking VoIP services in attempt to protect a
telephone monopoly and/or to censor information. The duo will release a pair of
tools to determine if an ISP is blocking SIP and to scan entire netblocks to
determine if any Asterisk IAX2 services are available. Details were also provided as to how Asterisk
and VoIP providers who support IAX2 can provide virtually un-blockable VoIP
services in a country that is actively blocking SIP-based VoIP services.

Sessions also touched upon the ability to use VoIP as a low
cost method to probe phone networks around the world and incidents last year
where a group of Italian VoIP hackers exploited VoIP vulnerabilities.

For more:
- Silicon Valley Insider spots Mitnick
hacking Asterisk
- The Last Hope website
- Jeremy McNamara’s VoIP/Asterisk
blog

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