Is that the whole thing?
The content available through the COMPANY is the sole property of COMPANY and is protected by copyright, trademark and other intellectual property laws.
combined with this part:
By joining COMPANY, …
seems suspicious. But, as said earlier, consult a lawyer (paralegal/etc.). You might even check around first on a legal advice forum. Sending a formal, well-drafted letter will be your first step. It’s usually “enough.”