![]() Once hackers broke in, they published all the passwords, so they form the basis of cracking dictionaries. These were passwords chosen by users of a website that was hacked. The most common dictionary is the list of 20 million RockYou passwords. The "dictionaries" used by password crackers aren't the "English dictionary", but dictionaries of known passwords. You say "not dictionary word", but it's more complicated than that. (c) a cluster of 8 GPUs is 8 times the previous number, or 8*80000 or 640k passwords/second, or 4 days to crack your hypothetical password (b) a desktop GPU (graphics processor) can do roughly 80000 passwords/second, or 80 times the speed of a CPU, or 30 days to crack your hypothetical password (a) a desktop CPU can do roughly 1000 passwords/second. ![]() I have no idea (and I'm not going to try to find out) if they've changed their passwords. I have this router, and have changed everything. This is supplied with an SSID of the form "virginmedia1234567" (The word virginmedia with a 7 digit random number), with a random password of the form "abcdefgh" (8 lowercase letters). The UK's only cable ISP (Virgin media) provides a combined modem / wifi router. How long will it take Eve to brute force that password if she hasī: a powerful desktop, with GPU (does GPU help at all in this case?)ĭ: access to amazon cloud GPU clustering and a couple of hundred dollars. The number of possible passwords is 26^8 (is that right?).ĮDIT: The ssid is not common, and there is no rainbow table available for it. Bob has a password (for his WPA encrypted wifi) which is 8 characters, all lowercase, and not a dictionary word.Įve lives next door to Bob and wants to illegally hack his WPA.
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