Z:gnu-www-ja-gpl-2.0-faq--2c4d62-If a company distributes a cop/en

If a company distributes a copy to you and claims it is a trade secret, the company has violated the GPL and will have to cease distribution. Note how this differs from the theft case above; the company does not intentionally distribute a copy when a copy is stolen, so in that case the company has not violated the GPL.