What does a highly secure system typically require?

A highly secure system typically requires significant investment, which is why the correct answer focuses on the aspect of financial resources. Security enhancements often necessitate a budget that can cover various areas, such as hiring skilled personnel, investing in advanced technology, implementing robust software solutions, and maintaining ongoing training and awareness programs for staff. This financial commitment is crucial for acquiring the necessary tools and resources to effectively protect against constantly evolving threats.

While advanced training, strong physical premises, and hardware choices all play important roles in creating a secure environment, they are often outcomes or components of the broader financial investment strategy. For example, advanced training programs require funding, and strong physical security measures (like surveillance and access controls) can also be costly. It's the allocation of adequate resources that underpins all security efforts, making the aspect of money indispensable in establishing a highly secure system.