The invention of present speaks to a method and system for the prevention of unwanted wireless telecommunications which is implemented as part of a computer program product in (preferentially) the telecommunications operator's network, which meets and/or exceeds much of current, proposed and even academically anticipated legislative (and by necessity, technical) criteria, and indeed, thereby complies with the broader body of prima facie consumer requirements associated with wireless telecommunications spam filtering. Indeed, the invention provides for a remarkably flexible and customizable advance in the art through the utilization of a progressive filtering algorithm. This algorithm offers both the subscriber and the service provider with the capability to block and/or extract potentially harmful or unsolicited SMS, MMS and other such messages on the basis of an extensive range of parameters and rules.