Yes, it could be a trade secret, but if the trade secrecy would still apply is extraordinarily fact specific. If they were negligent in handling it, e.g. left

Yes, it could be a trade secret, but if the trade secrecy would still apply is extraordinarily fact specific. If they were negligent in handling it, e.g. left it on a publicly accessible share and some member of the public stumbled into it, then trade secret protection would likely be lost. If some employee violated their NDA and snuck it out-- well that would be a different matter. etc.