Abstract: Message based web content retrieval systems and methods are presented herein. In preferred embodiments, a method comprises receiving a request for digital content from a client device. The content may be retrieved from the content provider. Content contained in a signature pattern may be extracted from the retrieved content of the content provider to provide filtered content. Hyperlinks, images, videos, and other non-text based digital content in the filtered content may be assigned a short code string unique to the non-text based digital content from the content provider requested by the client device.

Abstract: To facilitate effective and efficient tracing of packet flows back to a trusted point as near as possible to the source of the flow in question, devices on the border of the trusted region are configured to mark packets with partial address information. Typically, the markings comprise fragments of IP addresses of the border devices in combination with fragment identifiers. By combining a small number of marked packets, victims or other interested parties are able to reconstruct the IP address of each border device that forwarded a particular packet flow into the trusted region, and thereby approximately locate the source(s) of traffic without requiring the assistance of outside network operators. Moreover, traceback can be done in real-time, e.g. while a DDoS attack is on-going, so that the attack can be stopped before the victim suffers serious damage.

Abstract: To facilitate effective and efficient tracing of packet flows back to a trusted point as near as possible to the source of the flow in question, devices on the border of the trusted region are configured to mark packets with partial address information. Typically, the markings comprise fragments of IP addresses of the border devices in combination with fragment identifiers. By combining a small number of marked packets, victims or other interested parties are able to reconstruct the IP address of each border device that forwarded a particular packet flow into the trusted region, and thereby approximately locate the source(s) of traffic without requiring the assistance of outside network operators. Moreover, traceback can be done in real-time, e.g. while a DDoS attack is on-going, so that the attack can be stopped before the victim suffers serious damage.