access
app
binary
bit
blocked
button
circuit
close
code
computer
decrypt
device
digital
electronic
firewall
gadget
hacker
hacking
icon
internet
key
lock
login
mobile
online
open
pass
password
pda
phone
program
protect
protection
safe
safety
screen
secrecy
secret
security
shielding
smart
smartphone
software
start
surfing
system
tech
technology
unlock
web