Answer: Action learning
Explanation:
From the question, we are informed that Keith and his team, employees of an online retailing company, are being trained on cyber surveillance and user security and as part of their training, they are working to identify a solution to the problem of cyber-phishing and data breaches.
The method used is action learning. This means that the group will get an actual problem, solve it, plan and the results will be shown to the team and the organization.