15. The apparatus of claim 14 , the operations further comprising: determining a number of the particular messages that are authored by a user associated with the authorized profile; and determining that the user is a primary user based on the number of the particular messages that are authored by the user.
14. An apparatus, comprising: a processor; and a memory to store computer program instructions, the computer program instructions when executed on the processor cause the processor to perform operations comprising: sampling particular messages to provide message samples; creating the authorized profile using the message samples; determining that the authorized profile is sufficient to identify an unauthorized text communication; receiving a message; comparing a language pattern extracted from the message with a language pattern associated with the authorized profile to determine a deviation between the language pattern extracted from the message and the language pattern associated with the authorized profile; determining whether the deviation is within an allowable amount of deviation, the allowable amount of deviation based on an amount of the message samples used in creating the authorized profile; and determining whether the message is an unauthorized user account communication based on whether the deviation is within the allowable amount of deviation.