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		hanniabu on March 7, 2021 \| parent \| context \| favorite \| on: Bitsquatting Windows.com Since you have experience, maybe there's something you can help explain with what was mentioned: > In fact, out of the 32 valid domain names that are 1-bitflip away from windows.com "windows" is 7 characters long so how is there 32 1-bitflip combinations? Also one of the ones mentioned was "windo7s", but "w" is 01111000 and "7" is 0000111, which isn't a single bit flip away unless I'm doing something wrong.

jobigoud on March 7, 2021 [–]

If we use ASCII 7-bit char codes, 'w' is 0111 0111, and '7' is 0011 0111.

7 characters of 7 bits each gives a grand total of 49 flippable positions.

detaro on March 7, 2021 | [–]

and not all of the flip results are valid in domains, reducing the set. E.g. if 0111 0111 gets flipped to 0111 1111, that's not a valid character.

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