What is one of the principles of bomb security aimed at preventing threats?

Preventing a bomb from entering the site is a critical principle of bomb security. This approach focuses on proactive measures to eliminate potential threats before they can affect people or property. Implementing security protocols such as screening, access control, and effective perimeter security are essential in ensuring that unauthorized individuals and dangerous items, like explosives, do not gain entry to the premises.

By taking steps to secure a location from the outset, organizations can significantly lower the risk of an explosive device being introduced, thereby enhancing overall safety. This principle aligns with the broader concept of risk management, which includes identifying vulnerabilities and taking preventive measures to protect assets and personnel from harm.

In contrast, options like creating diversionary tactics or offering rewards for information are more reactive in nature, addressing threats after they may have already forced a situation. Visual surveillance is a useful tool but is not sufficient on its own; it should be part of a comprehensive security strategy that includes multiple layers of prevention.