zero day

Unknown software vulnerability

A zero day is a software vulnerability unknown to those responsible for fixing it—developers have had "zero days" to address the flaw before it's exploited.

Zero-day attacks target these undiscovered weaknesses, often causing significant damage before patches exist.

The term appears in cybersecurity contexts: Hackers used a zero-day exploit to breach the network.

Also written zero-day.

attack

exploit

Notable act or abuse

infiltration · compromise · APT · cyberattack · payload · weaponized · nation-state · espionage · sabotage · exfiltration

defense

patch

Material covering damage

antivirus · intrusion detection · sandboxing · security update · hotfix · signature · heuristics · behavioral analysis · forensics · remediation

vulnerability

unpatched

Missing corrective updates

undisclosed · unknown · discovery · exposure · critical · latent · proof-of-concept · disclosure · bug bounty · weakness

market

black market

Illicit trading system

purchase · stockpiling · hoarding · ethics · regulation · arms trade · value · premium · underground · dark web

Categories
Family

zero, day, zeros, zeroed, zeroing, days, daily

Familiarity
Top 500,000
Profile
Used worldwide · Abstract · Negative · Rated PG