| Publisher | Association for Computing Machinery | ||
|---|---|---|---|
| Format | 1.1MB PDF | Date added | 11 Nov 2005 |
| Topics | Software Engineering, Network Security | ||
| Downloads | 5 | ||
This paper studies the effectiveness of automatic patching and quantifies the speed of patch dissemination required for worm containment. The paper focuses on random scanning as this is representative of current generation worms, though smarter strategies exist. The paper finds that even such "Dumb" worms require very fast patching. The primary focus is on how delays due to worm detection and patch generation and dissemination affect worm spread. Motivated by scalability and trust issues, it considers a hierarchical system where network hosts are partitioned into subnets, each containing a patch server (termed superhost). Patches are disseminated to superhosts through an overlay connecting them and, after verification, to end hosts within subnets.
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