In this paper, we address issues related to defending against widespreading worms on the Internet. We study a new class of worms called the selfadaptive worms. These worms dynamically adapt their propagation patterns to defensive countermeasures, in order to avoid or postpone detection, and to eventually infect more computers. We show that existing worm detection schemes cannot effectively defe...

The popularity of reactive worms, whose attacking behavior inherits characteristics from both active worms and passive worms, has brought great threat to P2P networks in recent years. Most existing defense models only focus on the effects of P2P churn on reactive worm's propagation, but neglect the impact of user behaviors on the spread of worms. This paper proposes a defense model of reactive ...

What is a velvet worm? Velvet worms are terrestrial, soft-bodied, many-legged carnivores. They form the phylum Onychophora (‘claw bearers’ — each of their many limbs terminates in paired claws). Velvet worms range in size from around 10 millimetres long to relative giants in excess of 20 centimetres, and known species have between 13 and 43 pairs of stubby limbs termed lobopods. Unlike arthropo...

subulura brumpti infection was observed in japanese quails and caused heavy production loss up to 10%. gross lesions were confined to caecum of the affected birds. pathological changes suggestive of acute cecal hemorrhagic enteritis were recorded. closer observation of the cecal loop revealed wavy movement with thousands of tiny worms. based on morphometry, the worms were identified as s. brump...