In legal and policy writing, “shall” usually expresses a duty or mandatory requirement, while “will” often describes intent, expectation, or a future action. In security and privacy documents, that difference matters because it changes whether a statement is an enforceable control or just a plan.
Cyber defenders rely on precise wording in policies, contracts, standards, and regulations. If a control says a team shall encrypt sensitive data, that creates an obligation that can be audited and enforced. If it says the team will encrypt data, the language may be weaker and easier to interpret as a roadmap rather than a requirement. Attackers and auditors both exploit vague language: attackers benefit when organizations treat soft commitments as real controls, while defenders look for “shall” language to build measurable compliance checks, access rules, retention limits, and incident-response duties. Clear wording turns legal requirements into operational security controls.