System abuse is strictly prohibited. Cros.net may terminate or modify service immediately and may bill for any resulting support charges if the client engages in system abuse. Following is a list of actions which are defined to be system abuse. This list is non-exclusive; any action about which there is any doubt should be referred to Cros.net evaluation.

Actions which constitute system abuse include, but are not limited to:

• Attempting to circumvent user authentication or security of any host, network, or account on Cros.net systems on the Internet at large (“cracking”)
• Attempting, in any way, to interfere with or deny service to any user of any host on the Internet
• Forging email or USENET posting header information
• Sending large numbers of unsolicited mail messages (i.e. “junk email”); this includes adding or attempting to add addresses to any mailing list without explicit positive consent of the addressee.
• Forwarding or posting “chain letters” (multiple forwarding) of any type
• Posting inappropriate message to USENET newsgroups e.g. posting large numbers of unsolicited posts indiscriminately (“spamming”), or posting encoded binary files to USENET newsgroups not specifically named for that purpose
• Attempting to cancel, supersede, or otherwise interfere with email or USENET posts other other than one’s own
• Engaging in harassment, whether through language, frequency, or size of messages
• Using an account at another provider to promote a Cros.net Web site in an abusive manner
• Using a Cros.net account or network connection to collect replies to messages sent from another provider which violate these rules or those of that provider
• Reselling Cros.net services to third parties who no do abide by these guidelines