What triggers the need for applying a security patch?

The need for applying a security patch is primarily triggered by the discovery of vulnerabilities. When vulnerabilities are identified in software, it implies that there are weaknesses that could be exploited by attackers, potentially compromising the security of systems and data. Security patches are released to address these vulnerabilities, effectively closing the gaps that could be taken advantage of by malicious actors. This proactive measure helps to secure systems and prevent unauthorized access or data breaches.

In contrast, the release of a new model or the introduction of new software features may not necessarily relate to security concerns, as these updates might focus more on functionality or performance enhancements rather than on addressing vulnerabilities. Similarly, an increase in user traffic typically does not indicate an immediate security issue requiring a patch, unless it exposes existing vulnerabilities that haven't been mitigated. Therefore, the critical factor driving the need for a security patch is indeed the discovery of vulnerabilities.