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Quick analysis of the linkedin password dump

Time:2018-01-14 04:10Turbochargers information Click:

analysis Quick LinkedIn passwo

Hello folks,

Few days ago, the linkedin password dump was released. It’s made of 6458020 sha1 unsalted-hashes. Yes, we are in 2012 and big websites still use unsalted hashes to store your passwords…
The dump is made of two different sort of hashes :

  • there are 3.521.180 “00000” masked hashes (e.g. 0000054bc8172921062252506762fd36a5f8a6ca)
  •  and 2.936.840 “normal” hashes.
  • While the origin of the masked hashes remains unknown, some people think that the hacker who released the dump masked the hashes he had already recovered. Anyway, we can recover those hashes. The hashcat author released two special versions of his tools (hashcat and oclhashcat) which support those zeroed hashes.

    I ran pipal over the 2.723.345 passwords I recovered and here is the output (NB: passwords which are smaller than 6 chars are due to zeroed hashes) :


    Total entries = 2723345
    Total unique entries = 2723345

    Top 10 base words
    linkedin = 4369 (0.16%)
    link = 2423 (0.09%)
    linked = 2207 (0.08%)
    alex = 1309 (0.05%)
    mike = 1260 (0.05%)
    june = 1129 (0.04%)
    password = 1109 (0.04%)
    love = 1073 (0.04%)
    john = 990 (0.04%)
    july = 937 (0.03%)

    Password length (length ordered)
    1 = 5 (0.0%)
    2 = 10 (0.0%)
    3 = 14 (0.0%)
    4 = 33 (0.0%)
    5 = 59 (0.0%)
    6 = 576661 (21.17%)
    7 = 477202 (17.52%)
    8 = 859497 (31.56%)
    9 = 393484 (14.45%)
    10 = 233247 (8.56%)
    11 = 95945 (3.52%)
    12 = 49188 (1.81%)
    13 = 19305 (0.71%)
    14 = 10510 (0.39%)
    15 = 4599 (0.17%)
    16 = 3130 (0.11%)
    17 = 229 (0.01%)
    18 = 139 (0.01%)
    19 = 39 (0.0%)
    20 = 33 (0.0%)
    21 = 16 (0.0%)
    22 = 5 (0.0%)
    23 = 5 (0.0%)
    24 = 9 (0.0%)
    26 = 3 (0.0%)
    27 = 2 (0.0%)
    34 = 2 (0.0%)
    40 = 2 (0.0%)

    Password length (count ordered)
    8 = 859497 (31.56%)
    6 = 576661 (21.17%)
    7 = 477202 (17.52%)
    9 = 393484 (14.45%)
    10 = 233247 (8.56%)
    11 = 95945 (3.52%)
    12 = 49188 (1.81%)
    13 = 19305 (0.71%)
    14 = 10510 (0.39%)
    15 = 4599 (0.17%)
    16 = 3130 (0.11%)
    17 = 229 (0.01%)
    18 = 139 (0.01%)
    5 = 59 (0.0%)
    19 = 39 (0.0%)
    20 = 33 (0.0%)
    4 = 33 (0.0%)
    21 = 16 (0.0%)
    3 = 14 (0.0%)
    2 = 10 (0.0%)
    24 = 9 (0.0%)
    1 = 5 (0.0%)
    23 = 5 (0.0%)
    22 = 5 (0.0%)
    26 = 3 (0.0%)
    34 = 2 (0.0%)
    27 = 2 (0.0%)
    40 = 2 (0.0%)

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    00000000001111111111222222222233333333334
    01234567890123456789012345678901234567890

    One to six characters = 576776 (21.18%)
    One to eight characters = 1913473 (70.26%)
    More than eight characters = 809872 (29.74%)

    Only lowercase alpha = 710811 (26.1%)
    Only uppercase alpha = 18614 (0.68%)
    Only alpha = 729425 (26.78%)
    Only numeric = 196384 (7.21%)

    First capital last symbol = 16877 (0.62%)
    First capital last number = 289330 (10.62%)

    Months
    january = 263 (0.01%)
    february = 108 (0.0%)
    march = 916 (0.03%)
    april = 1101 (0.04%)
    may = 4920 (0.18%)
    june = 1596 (0.06%)
    july = 1116 (0.04%)
    august = 722 (0.03%)
    september = 192 (0.01%)
    october = 376 (0.01%)
    november = 287 (0.01%)
    december = 285 (0.01%)

    Days
    monday = 259 (0.01%)
    tuesday = 99 (0.0%)
    wednesday = 35 (0.0%)
    thursday = 46 (0.0%)
    friday = 262 (0.01%)
    saturday = 42 (0.0%)
    sunday = 144 (0.01%)

    Months (Abreviated)
    jan = 8208 (0.3%)
    feb = 1059 (0.04%)
    mar = 34767 (1.28%)
    apr = 2357 (0.09%)
    may = 4920 (0.18%)
    jun = 3995 (0.15%)
    jul = 5133 (0.19%)
    aug = 2589 (0.1%)
    sept = 854 (0.03%)
    oct = 1941 (0.07%)
    nov = 3141 (0.12%)
    dec = 2471 (0.09%)

    Days (Abreviated)
    mon = 16686 (0.61%)
    tues = 119 (0.0%)
    wed = 988 (0.04%)
    thurs = 91 (0.0%)
    fri = 3387 (0.12%)
    sat = 2669 (0.1%)
    sun = 6159 (0.23%)

    Includes years
    1975 = 2682 (0.1%)
    1976 = 2707 (0.1%)
    1977 = 2725 (0.1%)
    1978 = 2851 (0.1%)
    1979 = 2812 (0.1%)
    1980 = 3358 (0.12%)
    1981 = 2878 (0.11%)
    1982 = 2873 (0.11%)
    1983 = 2525 (0.09%)
    1984 = 2592 (0.1%)
    1985 = 2050 (0.08%)
    1986 = 1621 (0.06%)
    1987 = 1406 (0.05%)
    1988 = 1194 (0.04%)
    1989 = 1063 (0.04%)
    1990 = 1055 (0.04%)
    1991 = 1005 (0.04%)
    1992 = 883 (0.03%)
    1993 = 915 (0.03%)
    1994 = 1079 (0.04%)
    1995 = 1241 (0.05%)
    1996 = 1329 (0.05%)
    1997 = 1423 (0.05%)
    1998 = 1647 (0.06%)
    1999 = 2064 (0.08%)
    2000 = 7032 (0.26%)
    2001 = 3913 (0.14%)
    2002 = 3605 (0.13%)
    2003 = 3461 (0.13%)
    2004 = 3853 (0.14%)
    2005 = 4361 (0.16%)
    2006 = 4632 (0.17%)
    2007 = 5370 (0.2%)
    2008 = 6903 (0.25%)
    2009 = 4212 (0.15%)
    2010 = 5926 (0.22%)
    2011 = 5351 (0.2%)
    2012 = 1836 (0.07%)
    2013 = 293 (0.01%)
    2014 = 222 (0.01%)
    2015 = 223 (0.01%)
    2016 = 192 (0.01%)
    2017 = 191 (0.01%)
    2018 = 211 (0.01%)
    2019 = 407 (0.01%)
    2020 = 925 (0.03%)

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