Abstract: Methods, apparatus, and systems to detect abuse of network services are disclosed. An example method involves obtaining network service activity information associated with a plurality of network service accounts, comparing via a fraud detection system the network service activity information with a term of a service agreement of a service provider, and identifying abusive activity based on the comparison.

Abstract: A controller (104) manages operations of a communication network (101). The controller has a communication element (202) for monitoring data traffic in the communication network and for controlling operations of the communication network, a memory (204) for storage, and a processor (206) for controlling operations of the communication element, and the memory. The processor is programmed to monitor (302) the communication network for the effects of malicious software, detect (304) a suspected malicious event, record (306) the suspected malicious event, restrict (308) Internet access to one or more customers suspected of having infected terminal equipment interrupting service of the communication network, and notify (310) said one or more customers of the restricted Internet access.