Describe a time when you had to handle a critical security incident. What actions did you take, and what was the outcome?

``` In a recent incident, our team detected unusual network traffic suggesting a potential breach. I led an immediate investigation, isolating affected systems to prevent further spread. We identified the vulnerability exploited and patched it, ensuring all similar systems were updated. Post-incident, I conducted a team debrief to improve our response strategy and documented lessons learned for future reference. ```