Hello, Phone Losers, I've been doing some research on voicmail hacking. It made the news due to a certain scandal in England, that you can get access to a person's voicemail by calling their cell phone wile emulating the caller ID of the cell phone you are trying to call. Sometimes they have a PIN set up, but there are generally no systems to stop you from brute forcing them. What is interesting, is that depending on the carrier, sometimes when you try to do this attack instead of reaching their voicemail, the call will execute as normal, and the victim's phone will say that they are calling themselves. So far I have determined that the the attack definitely works on Sprint, Virgin Mobile, and Verizon in the Los Angeles area. By the same token, it fails on T-Mobile and possibly ATT devices. I am currently recruiting volunteers to test the attack on (and the coolest part of the experiment so far has t be a deputy DA giving me permission to attack his phone) in order to come up with a more definitive list of which carriers the attack does and does not work on. What I am interested in hearing from the Phone Losers is, am I missing anything that could skew the results? For instance I know in some areas, carriers re-sell services of other carriers, would that effect the results, or would it not change them because the voicemail service is still on the carrier's network? Thanks for the help.
