The seller is only liable for gross negligence and intent. Not to be classified as gross negligence are damages caused by computer failures and transmission failures during e-mail transmission or by computer viruses. The seller shall take precautions against this by means of suitable anti-virus software. Liability for slight negligence shall apply exclusively in the event of a breach of primary obligations. In this case, the Seller's obligation to pay compensation shall be limited to 5,000.00 euros, unless a higher amount is agreed separately and in written form.