Prove what you published
Anyone can fake a video in an afternoon. Being able to prove what you made, and when, protects you.
The defensive conversation about synthetic media is almost entirely about detection: can we tell whether this clip is real? It is the right question and it is the second question. The first is whether you can prove what you yourself published.
Detection is necessary and insufficient
Detection tells you something about an artefact you received. It does nothing for the much more common institutional problem, which is an accusation directed at something you produced.
In that situation the organisation needs a record: what was generated, when, by whom, and with what disclosure. Content credentials embedded at the point of creation — recording provenance, creation date and synthetic nature — turn that from an argument into a lookup.
If you cannot produce the provenance of a piece of media, you cannot prove you are not the thing you are being accused of being.
Red-teaming your own principals
The other half of the discipline is adversarial and it makes people uncomfortable, which is a reasonable reaction to a defensible practice.
In a controlled sandbox, synthetic media of an organisation's own principals is generated deliberately, in order to identify which vulnerabilities exist and to develop detection signatures against them. If you can fool yourself, you know what an adversary will attempt — and you have a signature ready before they attempt it.
Speed over perfection
The final component is the least technical. A detection alert with no prepared response is a notification that you are about to have a bad week.
Rebuttal material has to exist before the attack: pre-scripted templates and auto-generated response content that can be deployed within minutes of detection. In crisis response, speed matters more than perfection — a good answer in twenty minutes outperforms a flawless one the following morning, because by then the clip has finished travelling.
