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WhatsApp security

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Just a school work for the english class.

Just a school work for the english class.

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WhatsApp security WhatsApp security Presentation Transcript

  • How does WhatsApp send your messages over the net? BY JAVIER HURTADO
  • Whatsapp security protocol  WhatsApp encrypts messages since versión 2.8.3 (2012)  WhatsApp uses the RC4 protocol to encrypt messages  Android:  Reversed MD5 hash  IMEI  iPhone:  MAC Address  MD5 hash
  • Obtaining hash in Android IMEI: 012345678912345 => View slide
  • Obtaining hash in iPhone MAC Address: AA:BB:CC:EE:FF=> View slide
  • WhatsApp security bug  First it sends a plain text packet with:  Client OS  WhatsApp app version  Port used for the message transmission (encrypted)  443  5222  5223  YOUR PHONE NUMBER
  • WhatsApp security bug (iPhone)
  • WhatsApp security bug (Android)
  • Precautions  Preferably do not use WhatsApp on public WiFi networks (cafes, airports…)  If there isn’t other option use a VPN