What is the ruling on eating Sadia sausages that bear the "halal" logo, and is what is said about the falsity of this claim true?

Writing "halal (definition)" on a product is not the decisive factor for its permissibility. The crucial element is the reality of the situation: if the slaughterer is a Muslim or a person of the Book, and adheres to the Islamic guidelines, then it is permissible to eat, even if "halal" is not written on it. If these conditions are not met, then it is not permissible to eat, even if "halal" is written on it. This can be ascertained by consulting experts and Islamic centers. If news is widespread that meats are not slaughtered according to Islamic rites, then caution dictates refraining from eating them. Scholars have differed regarding meat about which strong doubts exist concerning its proper slaughter. Some have permitted it, acting upon the verse: {The food of those who were given the Scripture is lawful for you}. Others have prohibited it, arguing that the default status of animals is prohibition unless there is certain evidence of a ritually permissible slaughter. This latter opinion is the more preponderant one.