Re: information safe
Lucian, While from a theoretical point this could work, legal considerations might hinder the use of such a system. It used to be a common audio trick to use an amplified white noise (broadband) source to disable hidden eavesdropping microphones. The noise was almost impossible to filter out without also filtering out the voices. An RF noise bridge in an unbalanced condition feeding an RF amplifier connected to a broadband antenna would probably work, but would not be legal. It might also raise havoc with the PC. A friend used to work for a foreign pharmaceutical company. They used a particular brand of laptop computer (I've forgotten which) that had a very low emi signature. They assumed that their competitors would spy on them to gain an edge in that ultra competitive business. Scott Lacey On 3 Oct 2002 at 20:26, Lucian wrote: Dear Sirs, We know it's very important to keep information safe, while PC and its monitor emit signals always. One method to deal with it is shielding, another method is to place an emitter besides PC emitting signals to interfere with PC's signals. Does anybody know anyinformation about the latter method? Thanks a lot in advance. Best regards, Lucian --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: information safe
A jamming device? I never heard of such a th100100100100111001100101101010101010010110110101011011011011011011101 Regards, Alan Brewster Senior Systems Safety Engineer -- From: Lucian [SMTP:y...@ht.rol.cn.net] Sent: Thursday, October 03, 2002 5:27 AM To: emc-p...@majordomo.ieee.org Subject: information safe Dear Sirs, We know it's very important to keep information safe, while PC and its monitor emit signals always. One method to deal with it is shielding, another method is to place an emitter besides PC emitting signals to interfere with PC's signals. Does anybody know any information about the latter method? Thanks a lot in advance. Best regards, Lucian --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: information safe
If I did know anything about it, I wouldn't be allowed to say so... -- From: Lucian y...@ht.rol.cn.net To: emc-p...@majordomo.ieee.org Subject: information safe List-Post: emc-pstc@listserv.ieee.org Date: Thu, Oct 3, 2002, 7:26 AM Dear Sirs, We know it's very important to keep information safe, while PC and its monitor emit signals always. One method to deal with it is shielding, another method is to place an emitter besides PC emitting signals to interfere with PC's signals. Does anybody know any information about the latter method? Thanks a lot in advance. Best regards, Lucian
RE: information safe
-Original Message- From: Lucian [mailto:y...@ht.rol.cn.net] Sent: Thursday, October 03, 2002 5:27 AM To: emc-p...@majordomo.ieee.org Subject: information safe Dear Sirs, We know it's very important to keep information safe, while PC and its monitor emit signals always. One method to deal with it is shielding, another method is to place an emitter besides PC emitting signals to interfere with PC's signals. Does anybody know any information about the latter method? Thanks a lot in advance. Best regards, Lucian Lucian: You could employ a noise emitter of sufficient ERP to actively destroy the front ends of sensitive listening devices. However, EN FCC compliance will be a problem. Best (End-of-week) Regards, Ed Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis
Re: information safe
I read in !emc-pstc that Lucian y...@ht.rol.cn.net wrote (in 001801c26ad8$c3d21340$eef56cca@y7v8g6) about 'information safe' on Thu, 3 Oct 2002: Does anybody know any information about the latter method? Yes, it's illegal in almost all countries. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
