Index_O

O

OFDM (Orthogonal Frequency Division Multiplexing), interference and, 129

offline storage of backups, 223

omnidirectional antenna, 252

one-way-hash function, digital signatures, 176–177

online storage of backups, 220–221

open protocols, 24

organizations, Wi-Fi Alliance, 20–21

OS (operating system)

lockdown, 208–213

updates, adware/spyware and, 153

weaknesses in, 79–82

OSI (Open Systems Interconnect) reference model, 27–30