Every single part of your hardware carries a unique ID code, also VWM is slightly wrong with his IP analysis (he only described Dynamic IP`s), there are basically 2 forms of IP`s -Static and Dynamic, these both have leases, a Static IP address has a far longer lease and in most cases when this lease expires you are still allotted the same IP again (unless you release it just prior to it`s expiry date, and don`t renew it for a good few hours afterwards). Dynamic IP`s renew each time you boot your PC, they can however change whilst you are online, and are sometimes the cause of annoying disconnections when playing.
Originally Posted by maphesto
There are certain other aspects as well that are picked up on security sweeps - Your OS, Browser, Various software`s installed.
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