Meer: Voice Over IP Under Threat? | rss feed | toevoegen | e-mail nieuwsalarm | Slashdot | 2007-01-05 16:46:52
An anonymous reader writes "The IT Observer is discussing the possible scary future of Voice over IP targeted viruses, and what that could mean for the consumer. The article discusses the likelihood that VoIP is going to become even more popular, and the damage that a targeted 'flash virus' could perpetrate in a very short amount of time. From the article: 'Let's imagine a scenario that could become commonplace in the near future: A user has an IP telephony system on his computer (both at home and at work). In his address book on the computer there is an entry, under the name Bank, with the number 123-45-67. Now, a hacker launches a mass-mailing attack on thousands or millions of email addresses using code that simply enters users' address books and modifies any entry under the name Bank to 987-65-43. ... If any of these users receives a message saying that there is a problem in their account, and asking them to call their bank (a typical phishing strategy), they may not be suspicious, as they are not clicking on a link in an email ... If they use their VoIP system to call the bank, they will be calling the modified number, where a friendly automated system will record all their details. ' "
http://rss.slashdot.org/~r/Slashdot/slashdot/~3/71183936/article.pl
Meer: Voice Over Santa | rss feed | toevoegen | e-mail nieuwsalarm | BLOGT punt NL | 2006-12-27 01:08:55
Heerlijk zeg de Kerstdagen zijn weer voorbij. Zelfs de Kerstman zal blij zijn. We hebben namelijk wat Kerst commercials gemaakt en natuurlijk laat je de echte Kerstman de HoHoHoos inspreken. Voice-Over Santa klinkt volgens de producers niet zoals het in het script bedacht is. Tsja Santa, daarom kun je beter dit soort dingen over laten aan de echte voice-Overs ;-) http://weblog.coolmedia.nl/index.php?id=P5934
Meer: Security Analysis of Voice-over-IP Protocols, by Prateek Gupta and Vitaly Shmatikov | rss feed | toevoegen | e-mail nieuwsalarm | IACR Eprint Archive | 2006-11-20 00:48:34
Transmission of voice communications as datagram packets
over IP networks, commonly known as Voice-over-IP
(VoIP) telephony, is rapidly gaining wide acceptance.
With private phone conversations being conducted on
insecure public networks, security of VoIP communications
is increasingly important. We present a structured
security analysis of the VoIP protocol stack, which
consists of signaling (SIP), session description (SDP),
key establishment (SDES, MIKEY, and ZRTP) and secure
media transport (SRTP) protocols. Using a combination
of manual and tool-supported formal analysis, we uncover
several design flaws and attacks, most of which are caused
by subtle inconsistencies between the assumptions that
protocols at different layers of the VoIP stack make about
each other.
The most serious attack is a replay attack on SDES,
which causes SRTP to repeat the keystream used for media
encryption, thus completely breaking transport-layer
security. We also demonstrate a man-in-the-middle attack
on ZRTP which disables authentication and allows the
attacker to impersonate a ZRTP user and establish a shared
key with another user. Finally, we show that the key
derivation process used in MIKEY cannot be used to prove
security of the derived key in the standard cryptographic
model for secure key exchange. http://eprint.iacr.org/2006/424
Meer: Update: T-Mobile to Offer Voice over IP Calling | rss feed | toevoegen | e-mail nieuwsalarm | Software Headlines :: Index | 2006-09-27 05:03:53
So, how come when the Wall Street Journal writes about T-Mobile offering dual-mode phones and the Voice over IP calling the story gets picked up everywhere, but when I wrote about it, I didnt even get a mention&(Just Kidding)Anyways, the Wall Street Journal is reporting that T-Mobile will introduce new phones as early as next month that can use Wi-Fi hotspots in order to make phone calls. The WSJ also hinted that T-Mobile could/should also offer its own Voice over IP offering.Here is a link to the BetaNews write-up of the story. (You can not read the WSJ article unless you are a subscriber.)Source: http://www.smithonvoip.com/2006/09/27/update-t-mobile-to-offer-voice-over-ip-calling/ Garrett Smith http://www.softwareheadlines.com/modules/planet/view.article.php/43514
Meer: T-Mobile to Offer Voice over IP Calling | rss feed | toevoegen | e-mail nieuwsalarm | Software Headlines :: Index | 2006-09-24 10:12:27
Not yet&.But with the purchase of $4.2 Billion in wireless spectrum, T-Mobile has put themselves in a great position to not only increase their cellular marketshare, but also start to offer additional services such as VoIP and WiFi.A Probe Financial report on the T-Mobile spectrum purchase contains some interesting thoughts on what impact this purchase could have on T-Mobiles communications offerings."T-Mobile has been an also-ran in the U.S. mobile market," states Al Boschulte, Chairman of Probe Financial Associates, Inc. "No more. Not only is it evolving into a credible player, it will soon have the ability to launch truly disruptive strategies."I look for T-Mobile to accelerate its network development plans, build on its leadership position in WiFi, and do an end-run around the dominant competitors, Verizon Wireless and Cingular," Boschulte added. "This could have major impacts not only on WiFi but on the development of UMA (unlicensed mobile access), wireline-to-wireless conversion and the outlook for many other companies, including telcos, cable, Sprint and others."When someone starts talking disruptive strategies and end-runs around larger competitors I start thinking about VoIP, WiFi, IPTV, and the likes. With T-Mobiles parent company Deutsche Telecom already offering a dual-mode telephony solution in Germany T-Mobiles current HotSpot offerings across the US, and their US test of a dual-mode telephony solution in Seattle I have no doubt that T-Mobile can execute on bringing dual-mode telephony and other distruptive technologies to the US.With the purchase of $4.2 Billion in spectrum, T-Mobile now has all of the pieces in place. T-Mobile has positioned themeselves to have the ability to roll-out disruptive technologies to the mass market. I remember when T-Mobile launched GSM in the US with some highly competitve plans. At the time I was part of one of their new market roll-outs and I can tell you they had comeptitors scared. Imagine the fear they would strike into their competitors with the launch of VoIP calling (with dual-mode phones), alongside an expanded, nationwide WiFi offering (for home internet access) that utilizes a docking station where-in your dual-mode phone acts as the access point, and why not add IPTV to that as well. I believe T-Mobile, more then any other communications company in the US, is the one who will make much of what we inside the industry always talk about happen.How soon this will occur is still up in the air, but I would look for a big roll out of a dual-mode telephony solution, based on the test market in Seattle in the next six months to a year.Source: http://www.smithonvoip.com/2006/09/24/t-mobile-to-offer-voice-over-ip-calling/ Garrett Smith http://www.softwareheadlines.com/modules/planet/view.article.php/42125