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Groups > comp.sys.mac.system > #52600
| From | Wes Groleau <Groleau+news@FreeShell.org> |
|---|---|
| Newsgroups | comp.sys.mac.system |
| Subject | Re: Security Scare ? |
| Date | 2013-11-24 12:51 -0500 |
| Organization | Ain’t No Organization Here! |
| Message-ID | <l6tebh$fvm$1@dont-email.me> (permalink) |
| References | <l6r8gg$u21$1@dont-email.me> <Y92dnSzcbJBYsg_PnZ2dnUVZ_hudnZ2d@giganews.com> <slrnl94ef1.ifj.g.kreme@mbp55.local> |
On 11-24-2013, 12:39, Lewis wrote: > Alan Browne <alan.browne@FreelunchVideotron.ca> wrote: >> The notion of computer speakers being used to transmit data to another >> computer (microphone) is entirely plausible (remember early acoustic >> modems?). > > It's not plausibale, it is trivial and anyone can do it. > > HOWEVER, it is extremely slow (like 110 baud slow), and it is audible. > The idea that ultrasonics could be used for this is... implausible at > best. > >> It's further plausible that this take place above human hearing >> thresholds, esp. if the speakers are driven as directly as possible to >> avoid filtering (even if in the h/w filtering band, some will leak >> through depending on how sharp edged the filter is - for cost reasons >> these are usually not very sharp). > > You need speakers that can reliably produce ultrasonics and mics that > will reliably pick them up. Neither is standard in computer hardware. I don't know whether he had sophisticated audio components. I would doubt it--they would be of little use in his primary work. He hypothesized ultrasonics, but I read another article suggesting that it may be possible to get a reasonable bandwidth from a dual-tone scheme and be able to hide it in normal fan noise. I forget the exact numbers, but my thought was that the number they offered is "reasonable bandwidth" for text/e-mail but NOT for replacing malware as fast as it can be removed. -- Wes Groleau Why does everyone call it a “fanny pack" ? When was the last time you saw one on a fanny?
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Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-23 16:59 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-23 17:16 -0500
Re: Security Scare ? Paul Sture <nospam@sture.ch> - 2013-11-24 09:34 +0100
Re: Security Scare ? Michelle Steiner <foo@bar.com> - 2013-11-24 07:23 -0700
Re: Security Scare ? Paul Sture <nospam@sture.ch> - 2013-11-24 15:40 +0100
Re: Security Scare ? Michelle Steiner <foo@bar.com> - 2013-11-24 08:39 -0700
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 16:56 +0000
Re: Security Scare ? billy@MIX.COM - 2013-11-23 22:19 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-23 20:21 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-24 04:38 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 00:52 -0500
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-24 02:09 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 16:47 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:32 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-24 17:32 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:53 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 19:19 +1300
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-24 11:56 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 17:09 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:45 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 18:26 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 13:40 -0500
Re: Security Scare ? Jolly Roger <jollyroger@pobox.com> - 2013-11-24 21:15 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 21:41 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 19:19 +1300
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-25 09:02 +0000
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 23:10 +1300
Re: Security Scare ? Richard Kettlewell <rjk@greenend.org.uk> - 2013-11-25 10:24 +0000
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-26 07:39 +1300
Re: Security Scare ? Richard Kettlewell <rjk@greenend.org.uk> - 2013-11-25 20:48 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 21:01 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 20:26 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-26 07:13 +0000
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-27 13:59 +1300
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 20:23 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-26 16:28 +1300
Re: Security Scare ? Paul Sture <nospam@sture.ch> - 2013-12-01 12:23 +0100
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-24 13:00 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-24 17:39 +0000
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:51 -0500
Re: Security Scare ? billy@MIX.COM - 2013-11-24 18:38 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-24 17:10 -0500
Re: Security Scare ? Ted Lee <tmplee@mr.net> - 2013-11-24 16:24 -0600
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 21:46 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 20:26 +1300
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 21:04 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-26 16:28 +1300
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-24 13:18 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-25 01:15 +0000
Re: Security Scare ? nospam <nospam@nospam.invalid> - 2013-11-24 20:23 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 21:55 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 22:22 -0500
Re: Security Scare ? nospam <nospam@nospam.invalid> - 2013-11-24 23:34 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-25 08:54 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-25 12:19 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-25 21:07 -0500
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-25 23:27 -0500
Re: Security Scare ? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-26 07:10 +0000
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-26 02:22 -0500
Re: Security Scare ? dempson@actrix.gen.nz (David Empson) - 2013-11-26 12:45 +1300
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-27 20:17 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-12-10 01:25 -0500
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-25 16:48 -0500
Re: Security Scare ? billy@MIX.COM - 2013-11-26 03:01 +0000
Re: Security Scare ? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2013-11-27 19:36 -0500
Re: Security Scare ? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2013-11-25 23:22 -0500
Re: Security Scare ? Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-24 12:41 -0500
Re: Security Scare ? jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-25 19:11 +1300
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