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hpr_transcripts/hpr0426.txt

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+Episode: 426
+Title: HPR0426: Hacking Sprint Voicemail
+Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr0426/hpr0426.mp3
+Transcribed: 2025-10-07 20:16:46
+
+---
+
+music
+music
+Hello, thanks for listening to Hacker Public Radio. I am your host today, Will Jason.
+That is J-A-S-E-N. Everybody always confuses. What I'm going to talk about today is how
+to access Sprint User's Voiceman. Now, when I say Sprint Users, it doesn't
+necessarily mean that you have to be on the Sprint Network. You just have to know, I
+guess, your target within the Sprint Network. Their phone number really is all you need.
+I came across this because I was talking to a former English professor on my cell phone,
+but my battery kept on, so I told her, hey, I will set up my IP phone, and I will call
+you back. Unfortunately, the server I have, Astros on, I have had done some reconfigurations,
+so Astros wasn't working functionally as far as getting my phone to work. Within 15 minutes,
+I was able to get my phone up, and I was going to call her. But before I did that, I wanted
+to set my own caller ID, because she is very picky about if she doesn't know the number
+that is calling, she won't pick up. I called, but she didn't answer. So, just to be
+sure that my caller ID was being set correctly, I called my own cell phone, or I attempted
+to anyway. Instead of calling my cell phone, it actually went straight into the voicemail
+of my account. At first, I didn't really realize the severity of this, but it quickly
+slipped into my mind. I can probably do this to someone else's, so a friend, I also entered
+his number as the outgoing caller ID, and I called his number, and sure enough, it went
+straight into his voicemail. Now granted, I didn't listen to his voicemail, I just made
+sure that it would come up. I also tried a couple of other friends numbers on different
+networks, but those networks, they seemed to block it. In fact, I tried all-tell, and
+I tried Virgin, and instead of going into voicemail, instead of ringing the phone, it actually
+appears to just ring infinitely, or a really long time until somebody hangs up. This is
+a perfect example of security through obscurity, and it demonstrates why it does not work well.
+One is assuming that nobody is changing their caller IDs, and calling their own number.
+However, in this case, I stumbled across it, and luckily, I'm not a very malicious person,
+but as I think we all believe here at HPR knowledge is power, and knowledge should be free.
+But that's it. This concludes another hacker-public radio. Remember that HPR is community driven,
+so that means that anyone could submit an episode. I'm Old Jason, and I remind you, complete
+the pattern, solve the puzzle, turn the key.