Abstract: A system for defending against internet-based attacks is disclosed. The system may include a processor which may be configured to receive information associated with a device when a web request is transmitted by the device to access a web page monitored by the processor. The processor may also determine whether traffic associated with the web request from the device is suspected of being used for malicious activity and, if not, enable the device to access the web page. If the traffic is suspected of being used for malicious activity, then the processor may transmit a challenge to the device if the traffic is determined to be suspected. Furthermore, the processor may receive information associated with the web request, which may be provided by a uniform resource locator invoked in response to the traffic being determined to be suspected.

Abstract: A system for defending against internet-based attacks is disclosed. The system may include an electronic data processor which may be configured to receive information associated with a device when a web request is transmitted by the device to access a web page monitored by the electronic data processor. The processor may also determine whether traffic associated with the web request from the device is suspected of being used for malicious activity and, if not, enable the device to access the web page. If the traffic is suspected of being used for malicious activity, then the processor may transmit a challenge to the device if the traffic is determined to be suspected. Furthermore, the processor may receive information associated with the web request, which may be provided by a uniform resource locator invoked in response to the traffic being determined to be suspected. The processor may also deny the device access to the web page based on a variety of factors.

Abstract: A method for controlling sender events arriving at a recipient system is provided. An event transmitted from a sender is received at recipient system, and an event signature is determined. An elapse time between received event and a previous event is calculated. If elapse time is less than or equal to a critical time, it is determined if a counter is equal to or greater than a maximum value. If yes, event is rejected. If not, counter is incremented and the event is processed. If elapse time is greater than critical time, it is determined if elapse time is less than or equal to a grace period and if counter is greater than zero. If yes, counter is decremented and the event is processed. If not, counter is set to zero and event is processed. The critical time, maximum value, and increment/decrement factor are set based on the event signature.

Abstract: A method for controlling sender events arriving at a recipient system is provided. An event transmitted from a sender is received at recipient system, and an event signature is determined. An elapse time between received event and a previous event is calculated. If elapse time is less than or equal to a critical time, it is determined if a counter is equal to or greater than a maximum value. If yes, event is rejected. If not, counter is incremented and the event is processed. If elapse time is greater than critical time, it is determined if elapse time is less than or equal to a grace period and if counter is greater than zero. If yes, counter is decremented and the event is processed. If not, counter is set to zero and event is processed. The critical time, maximum value, and increment/decrement factor are set based on the event signature.