security system

Home defense network

A security system is a network of devices and procedures designed to protect property, people, or information from unauthorized access, theft, or harm.

Home security systems typically include alarms, sensors, cameras, and monitoring services: The security system detected motion in the backyard.

The term extends to digital contexts—firewalls, encryption, and authentication protocols that guard computer networks.

We upgraded the security system after the break-in.

alarm

siren

Wailing alert device

breach · alert · monitoring · CCTV · panic button · keypad · armed · disarmed · triggered · silent alarm

protection

safeguard

Precaution against harm

lock · surveillance · patrol · guard · fence · gate · access control · deadbolt · reinforced · safe room

Categories
Opposites
protection vs. vulnerability

security systemvulnerability

Openness to harm

security breach · defenselessness · blind spot · weakness · weak point

access control

security systemopen door

Barrier removed for entry

open access · open door policy · welcome mat · free passage · unlocked door

threat relationship

security systemlockpick set

Lock-manipulation tool collection

exploit · malware · trojan horse · backdoor

Family

secure, system, security, insecure, secured, insecurity, securing, systems, systematic

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G