alarm
alert
anti
antivirus
attack
background
box
caution
cell
cellphone
computer
cyber
danger
design
error
flat
fraud
graphic
hacked
icon
important
laptop
mail
malware
message
mobile
notification
pc
phishing
phone
pop
popup
problem
push
ransomware
risk
scam
secure
sign
sms
spam
text
threat
up
virus
web
window