firewall breach
Network defense failure
A firewall breach is unauthorized penetration of a network security system designed to block unwanted traffic.
The firewall—software or hardware that filters data between networks—has been circumvented, allowing attackers access to protected systems: The company disclosed a firewall breach that exposed customer data.
In corporate contexts, breach often triggers legal reporting requirements and incident response protocols.
- intrusionUnauthorized entry into space
- hackerUnauthorized system accessor
- vulnerabilityOpenness to harm
- zero dayUndiscovered security flaw
- exploitNotable act or abuse
security hole · penetration · cyberattack · brute force · compromise · insider threat · security · network security · access control · network · malware · infiltration · unauthorized · crack · bypass · perimeter · defense · encrypted
- breachesrupture, violation, intrusion, break, infringement
- cyber threatsmalware, phishing, hacking, virus, ransomware
- cyberattacksmalware, phishing, ransomware, hack, virus
- cybercrimeshacking, phishing, malware, ransomware, identity theft
- security breachesunauthorized access, intrusion, hacking, password theft, credential theft
- security threatshacker, cyberattack, malware, cyber attack, hacking