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Security Breach

Definition - What does Security Breach mean?

A security breach is any incident that results in unauthorized access of data, applications, services, networks and/or devices by bypassing their underlying security mechanisms. A security breach occurs when an individual or an application illegitimately enters a private, confidential or unauthorized logical IT perimeter.

A security breach is also known as a security violation.

Techopedia explains Security Breach

A security breach is one of the earliest stages of a security attack by a malicious intruder, such as a hacker, cracker or nefarious application. Security breaches happen when the security policy, procedures and/or system are violated. Depending on the nature of the incident, a security breach can be anything from low-risk to highly critical.

In an organization, security breaches are typically monitored, identified and mitigated by a software or hardware firewall. If an intrusion, abnormality or violation is detected, the firewall issues a notification to the network or security administrator.

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