How should alternative explanations for messaging activity be assessed?¶

Start with the narrow event the records establish, identify each attribution step, and test realistic alternatives against evidence capable of distinguishing them.

Alternatives must connect to the facts¶

Shared accounts, linked devices, delegated access, compromise, automation, copied content, number reassignment and synchronisation can all be technically possible. They become useful investigative alternatives when the case contains a route, opportunity or artefact that could make them relevant.

Map what each explanation predicts about timing, possession, sessions, security history, message content and subsequent conduct. Seek records that would differ between the competing accounts rather than listing speculation that cannot be tested.

Weigh the complete evidential pattern¶

Document supporting and contradictory material for the preferred and alternative explanations. A bare assertion does not outweigh strong consistent evidence, but an alternative need not be proved before a material unresolved possibility is acknowledged.

Avoid absolute technical claims and explain why the preferred account fits the combined evidence better. State the remaining uncertainty and what further evidence would strengthen or weaken the conclusion. This creates a reviewable reasoning chain rather than hiding attribution assumptions.