International Journal of Engineering Sciences & Research Technology (IJESRT)
The Onion Router (TOR) allows to hide the users identity various software under this categories are available that allows online anonymity network, supporting TCP applications over the Internet. It doesn't allow network surveillance or traffic analysis to get tracked but most of these software used equal size of cells (512B). In this paper, the authors are comparing cell-counting attacks and browser attacks against TOR. Different from cell-counting attacks, these attacks can confirm anonymous communication relationships quickly and accurately by manipulating one single cell and pose a serious threat against Tor.