Tempest, mitos y realidades
-
Upload
pablo-garaizar -
Category
Technology
-
view
5.792 -
download
3
description
Transcript of Tempest, mitos y realidades
![Page 1: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/1.jpg)
Tempest, mitos y realidades
Asegur@IT III Universidad de Deusto
Septiembre 2008, Bilbao
Pablo Garaizar [email protected]
Universidad de Deusto
![Page 2: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/2.jpg)
¿De qué vamos a hablar?
![Page 3: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/3.jpg)
Algo casi propio de Friker Jiménez
![Page 4: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/4.jpg)
Con alto grado de paranoia
![Page 5: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/5.jpg)
Pero no es más que ciencia
![Page 6: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/6.jpg)
“Cualquier tecnología suficientemente avanzada es
indistinguible de la magia”
Arthur C. Clarke
![Page 7: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/7.jpg)
Let's do some magic!
![Page 8: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/8.jpg)
Vamos a hablar de ondas
![Page 9: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/9.jpg)
Ondas electromagnéticas
![Page 10: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/10.jpg)
Ondas sonoras
![Page 11: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/11.jpg)
Relacionadas con la seguridad
![Page 12: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/12.jpg)
Ondas electromagnéticas:
TEMPEST
![Page 13: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/13.jpg)
¿Qué es TEMPEST?
![Page 14: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/14.jpg)
TEMPEST: (contra)espionaje electromagnético
NSA: http://www.nsa.gov/ia/industry/tempest.cfm
![Page 15: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/15.jpg)
TEMPEST:estándares para evitar
ataques EMSEC
![Page 16: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/16.jpg)
Cable rojo vs. cable negro
![Page 17: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/17.jpg)
Ataques TEMPEST
![Page 18: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/18.jpg)
Monitores
![Page 19: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/19.jpg)
CRTs
![Page 20: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/20.jpg)
Wim van Eck: Electromagnetic Radiation from
Video Display Units: An Eavesdropping Risk (1985)
![Page 21: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/21.jpg)
van Eck Phreaking
![Page 22: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/22.jpg)
Kuhn & Anderson: Soft Tempest: Hidden Data
Transmission Using Electromagnetic Emanations
(1998)
![Page 23: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/23.jpg)
Berke Durak: Sources for Controlled CPU
TEMPEST Emanations (Cypherpunks, 1999)
![Page 24: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/24.jpg)
Pekka Riikonen: Tempest AM Radio Signal
Transmitter (1999)
![Page 25: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/25.jpg)
Erik Thiele: Tempest for Eliza (2001)
![Page 26: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/26.jpg)
TFTs
![Page 27: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/27.jpg)
En TFTs las emanaciones son más
débiles
![Page 28: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/28.jpg)
Pero aún así, se pueden capturar sin
equipamiento sofisticado
![Page 29: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/29.jpg)
Demostración
![Page 30: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/30.jpg)
Sintonizamos:Tempest for Eliza (SW @ 8.8 MHz)
Tempest-CRT (MW @ 595 KHz)
Your Mileage May Vary O:-)
![Page 31: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/31.jpg)
Si hay presupuesto, los resultados son espectaculares
![Page 32: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/32.jpg)
Equipamiento profesional
![Page 33: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/33.jpg)
Recepción y tratamiento de la señal
![Page 34: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/34.jpg)
Equipo:Antena Yagi para UHF (200–800 MHz)
Procesador Altera Stratix II DSP
Receptor Dynamic Sciences R1250
![Page 35: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/35.jpg)
Equipamiento profesional
![Page 36: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/36.jpg)
Ataques TEMPEST en otros
dispositivos
![Page 37: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/37.jpg)
RS232
![Page 38: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/38.jpg)
Peter Smulders: The Threat of Information Theft by
Reception of Electromagnetic Radiation from RS-232 (1990)
![Page 39: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/39.jpg)
CPU
![Page 40: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/40.jpg)
Hackers de los 70: rutinas especiales en el IBM 1401 y PDP-8 para producir señales AM
y saber cómo va el batch
![Page 41: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/41.jpg)
Berke Durak: Tempest-CPU, Tempest-Mem y
Tempest-PCI
![Page 42: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/42.jpg)
Ratones y teclados
![Page 43: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/43.jpg)
Periféricos wireless: transmisiones en
claro o con XORs de 2 bytes
![Page 44: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/44.jpg)
Luis Miras:Other Wireless: New Ways to be
Pwned
(Black Hat, 2007)
![Page 45: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/45.jpg)
![Page 46: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/46.jpg)
Moser, Schrödel: 27Mhz Wireless Keyboard Analysis
Report aka “We know what you typed last summer”
(Black Hat, 2008)
![Page 47: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/47.jpg)
![Page 48: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/48.jpg)
Contramedidas TEMPEST
![Page 49: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/49.jpg)
Markus Kuhn: Eavesdropping attacks on
computer displays
(ISS, 2006)
![Page 50: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/50.jpg)
Atenuación
![Page 51: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/51.jpg)
Jamming
![Page 52: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/52.jpg)
Zoning
![Page 53: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/53.jpg)
Soft tempest
![Page 54: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/54.jpg)
Soft tempest: Zero Emission Pad
![Page 55: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/55.jpg)
Shielding
![Page 56: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/56.jpg)
“Enemigo Público” (1998)
![Page 57: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/57.jpg)
Bart contra la Liga Nacional de Baseball
![Page 58: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/58.jpg)
Jaulas de Faraday para habitaciones
![Page 59: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/59.jpg)
Apantallamiento para ventanas
![Page 60: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/60.jpg)
Tiendas de campaña apantalladas
![Page 61: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/61.jpg)
Hormigón conductor de electricidad
![Page 62: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/62.jpg)
Tejidos apantallados (FaradayBag)
![Page 63: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/63.jpg)
Bolsas anti-estática
![Page 64: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/64.jpg)
Toroides de ferrita para cables
![Page 65: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/65.jpg)
Portátiles especiales
![Page 66: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/66.jpg)
Ondas electromagnéticas:
luz visible
![Page 67: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/67.jpg)
Información a partir de LEDs
![Page 68: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/68.jpg)
Loughry, Umphress: Information Leakage from Optical
Emanations (2002)
![Page 69: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/69.jpg)
Categorías:Class I: informa sobre su estado
Class II: modulados en función de la actividad
Class III: modulados en función de los datos transmitidos
![Page 70: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/70.jpg)
Resultados
![Page 71: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/71.jpg)
Resultados
![Page 72: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/72.jpg)
Análisis de la luz indirecta
![Page 73: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/73.jpg)
Markus Kuhn: Optical Time-Domain
Eavesdropping Risks of CRT Display (2002)
![Page 74: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/74.jpg)
Hamamatsu H6780-01 photosensor
![Page 75: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/75.jpg)
VESA 640x480 @ 85 MHz
![Page 76: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/76.jpg)
Captura con fotosensor
![Page 77: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/77.jpg)
Primer filtrado (4 MHz Butterworth high-pass)
![Page 78: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/78.jpg)
Segundo filtrado (deconvolución del anterior)
![Page 79: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/79.jpg)
Análisis de los reflejos en objetos
![Page 80: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/80.jpg)
Backes, Dürmuth, Unruh:
Compromising Reflections or How to Read LCD Monitors Around the
Corner (2008)
![Page 81: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/81.jpg)
Equipo:Cámara Canon EOS 400D (550 €)
Telescopio Skywatcher ED 80 PRO (380 €)
Telescopio Skywatcher Dobson 200 (300 €)
![Page 82: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/82.jpg)
Resultados
![Page 83: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/83.jpg)
Resultados
![Page 84: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/84.jpg)
Ondas electromagnéticas:
microondas
![Page 85: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/85.jpg)
Michal Zalewski: Cracking safes with thermal
imaging (as a more viable alternative to mind reading)
(2005)
![Page 86: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/86.jpg)
Fluke Ti25 / TiR1 (~4000 €)
![Page 87: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/87.jpg)
Resultados
![Page 88: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/88.jpg)
Ondas sonoras
![Page 89: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/89.jpg)
Teclados
![Page 90: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/90.jpg)
Sonov, Agrawal: Keyboard Acoustic Emanations
(IBM, 2004)
![Page 91: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/91.jpg)
Zhuang, Zhou, Tygar:
Keyboard acoustic emanations revisited (2005)
![Page 92: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/92.jpg)
Resultados
![Page 93: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/93.jpg)
Berger, Yeredor, Wool:
Dictionary Attacks Using Keyboard Acoustic Emanations
(2006)
![Page 94: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/94.jpg)
Microprocesadores
![Page 95: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/95.jpg)
Shamir, Tromer: Acoustic cryptanalysis
On nosy people and noisy machines (2004)
![Page 96: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/96.jpg)
Equipo:Micrófono Røde NT3 (170 $)
Alto S-6 mixer (55 $)
Creative Labs Audigy 2 (70 $)
![Page 97: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/97.jpg)
Resultados
![Page 98: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/98.jpg)
Esto es todo :-)
![Page 99: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/99.jpg)
¿Asustados?
![Page 100: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/100.jpg)
EGG = TEMPEST cerebral
![Page 101: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/101.jpg)
OpenEGG.sourceforge.net
![Page 102: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/102.jpg)
Tranquilidad
![Page 103: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/103.jpg)
Muchas gracias
![Page 104: Tempest, mitos y realidades](https://reader034.fdocument.pub/reader034/viewer/2022042507/549bfe25b47959cf318b45fd/html5/thumbnails/104.jpg)
Todas las imágenes son propiedad de sus respectivos dueños*, el
resto del contenido está licenciado bajo Creative Commons by-sa 3.0
* Iñigo Alonso, Creative Commons, Wikipedia, Fluke, FaradayBag, HollandShielding, Matt Groening, DELL, NBA, University of Omaha, cpgmattr (Flickr), c0ntr0 (Flickr), cliph (Flickr), rrrrred (Flickr), jon_gilbert (Flickr), jinaa (Flickr), justinmaterson (Flickr), lironeando (Flickr),
alvy (Flickr), tesla1000 (Flickr), picofarad (Flickr), nyamedia (Flickr), orangeacid (Flickr), kasperbagoo (Flickr), javigvidal (Flickr), magisterludi (Flickr), chris1h1 (Flickr), ericrobinson
(Flickr), momofone (Flickr), yum9me (Flickr), mrbill (Flickr), zach_manchester (Flickr), roadsidepictures (Flickr), jhat (Flickr)