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- Path: sparky!uunet!spool.mu.edu!umn.edu!cybrspc!roy
- From: roy%cybrspc@cs.umn.edu (Roy M. Silvernail)
- Newsgroups: alt.cyberpunk
- Subject: Re: Couldn't control my own phone (Re: Caller ID block?)
- Message-ID: <HHP6VB3w165w@cybrspc.UUCP>
- Date: Mon, 21 Dec 92 17:52:04 CST
- References: <18752@mindlink.bc.ca>
- Organization: Villa CyberSpace, Minneapolis, MN
- Lines: 25
-
- Clayten_Hamacher@mindlink.bc.ca (Clayten Hamacher) writes:
-
- > That wouldn't stand up... It might satisfy you that it's the same person but
- > CNID isn't valid in court anyway because it can be faked.
-
- If your adversary is good enough to fake CNID, then CallTrace,
- CallBlocking and ReturnCall are also compromised, because all this
- information is supplied by the switch. Without implicit cooperation
- from the LEC, you can't spoof CNID, only block it. (and some LEC's
- don't even offer blocking)
-
- > You need to get the
- > service where you can dial *xx and it will record the # that called you even
- > if it didn't show-up on CNID.
-
- That much is true, but the reason it would not have shown ID is because
- the ID was either blocked or unavailable. If you were to receive ID,
- the chances of it not matching what an official trace reports are very
- small. (it's possible that a trace may report a DID extension behind a
- PBX, where CNID would report the main incoming line, for example)
- --
- Roy M. Silvernail -- roy%cybrspc@cs.umn.edu - OR- cybrspc!roy@cs.umn.edu
- "I like Santa Claus as well as the next guy, but do you really want a
- hard drive that's spent 6000 miles at the bottom of a canvas sack in a
- wooden sleigh powered by airborne reindeer?" -- me
-