What are your greatest strengths and accomplishments?

"I'd say that at my last job my most significant accomplishment was putting a new firewall in place that prevented potentially devastating breaches. When I was hired, the company was very lax with its network security. Immediately, I knew that one of my top priorities was to bolster the security here so the company and its data and employees would be fully protected against bad actors. I researched and selected a well-established and highly-regarded firewall that undoubtedly protected the network in coming days from attempted hacks. I also put anti-virus software in place and kept it updated, in addition to educating employees about how to use two-factor authentication to access the network and not to fall for phishing attempts. I believe that one of my strengths is the expertise I have in the area of network security and my ability to effectively communicate and teach others about it, and I look forward to potentially doing this at your company as well."