OS Statistics: August 1999 to Present


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All of the annual, monthly and defacements per day tables have been moved to annuals.html
If you're looking for the OS graphs, they're here os-graphs.html

Please read the very brief Notes

Overall OS Table

OS by Month Or just click the month that you are interested in from the list below:

August 1999 September 1999 October 1999 November 1999 December 1999 January 2000
February 2000 March 2000 April 2000 May 2000 June 2000 July 2000
August 2000 September 2000 October 2000 November 2000 December 2000 January 2001
February 2001 March 2001 April 2001 May 2001

Overall OS Counts, August 1999 To May 17, 2001

Operating System Count Percent
Win-NT 7251 54.54
Linux (unknown distro) 1575 11.85
Linux (RedHat) 1229 9.24
Solaris 934 7.03
Windows 2000 899 6.76
Irix 319 2.40
FreeBSD 299 2.25
BSDI 285 2.14
Unknown 123 0.93
SCO 63 0.47
Linux (ALZZA) 37 0.28
Linux (Cobalt) 36 0.27
Linux (Conectiva) 36 0.27
Generic Unix 33 0.25
Linux (Debian) 27 0.20
Win-95 24 0.18
Compaq True64 Unix 20 0.15
Linux (SuSE) 17 0.13
Linux (Mandrake) 16 0.12
Digital Unix 15 0.11
AIX 13 0.10
HPUX 12 0.09
MacOS 9 0.07
OpenBSD 7 0.05
NetBSD 4 0.03
NetWare 4 0.03
Linux (Slackware) 3 0.02
Digital OSF1 2 0.02
PowerBSD 2 0.02
MacOSX 1 0.01
Defacements Since August 1999 13295 87.45
TOTAL DEFACEMENTS 15203 100%


Monthly Tables, August 1999 To May 17, 2001


August 1999
Operating System Count Percent
Win-NT 110 33.74
Solaris 81 24.85
Linux (unknown distro) 69 21.17
Unknown 23 7.06
BSDI 19 5.83
Irix 11 3.37
FreeBSD 8 2.45
SCO 2 0.61
AIX 1 0.31
Digital OSF1 1 0.31
HPUX 1 0.31
Total Defacements for August 1999 326 100%


September 1999
Operating System Count Percent
Win-NT 82 31.78
Linux (unknown distro) 72 27.91
Solaris 62 24.03
BSDI 13 5.04
FreeBSD 11 4.26
Irix 7 2.71
Unknown 7 2.71
HPUX 2 0.78
Digital Unix 1 0.39
MacOSX 1 0.39
Total Defacements for September 1999 258 100%


October 1999
Operating System Count Percent
Win-NT 308 61.97
Linux (unknown distro) 69 13.88
Solaris 52 10.46
FreeBSD 24 4.83
BSDI 19 3.82
Irix 8 1.61
Linux (Cobalt) 6 1.21
Unknown 4 0.80
SCO 3 0.60
Win-95 2 0.40
HPUX 1 0.20
OpenBSD 1 0.20
Total Defacements for October 1999 497 100%


November 1999
Operating System Count Percent
Win-NT 440 66.17
Linux (unknown distro) 101 15.19
Solaris 57 8.57
BSDI 17 2.56
Irix 12 1.80
FreeBSD 11 1.65
Linux (ALZZA) 7 1.05
Unknown 5 0.75
Digital Unix 4 0.60
Win-95 4 0.60
OpenBSD 2 0.30
SCO 2 0.30
AIX 1 0.15
Linux (Mandrake) 1 0.15
PowerBSD 1 0.15
Total Defacements for November 1999 665 100%


December 1999
Operating System Count Percent
Win-NT 253 61.41
Linux (unknown distro) 53 12.86
Solaris 39 9.47
BSDI 19 4.61
Irix 17 4.13
FreeBSD 12 2.91
SCO 8 1.94
Digital Unix 4 0.97
Linux (RedHat) 3 0.73
Unknown 3 0.73
MacOS 1 0.24
Total Defacements for December 1999 412 100%


January 2000
Operating System Count Percent
Win-NT 255 60.00
Linux (unknown distro) 61 14.35
Solaris 41 9.65
BSDI 14 3.29
Win-95 13 3.06
Unknown 10 2.35
Linux (RedHat) 7 1.65
FreeBSD 6 1.41
Irix 4 0.94
MacOS 4 0.94
Linux (Cobalt) 3 0.71
Digital Unix 2 0.47
Linux (ALZZA) 2 0.47
Linux (Debian) 1 0.24
Linux (Slackware) 1 0.24
SCO 1 0.24
Total Defacements for January 2000 425 100%


February 2000
Operating System Count Percent
Win-NT 261 66.08
Linux (unknown distro) 39 9.87
Solaris 30 7.59
Linux (RedHat) 25 6.33
FreeBSD 14 3.54
Linux (ALZZA) 7 1.77
BSDI 5 1.27
Irix 4 1.01
Linux (Cobalt) 4 1.01
Unknown 2 0.51
Linux (Mandrake) 1 0.25
NetWare 1 0.25
OpenBSD 1 0.25
Windows 2000 1 0.25
Total Defacements for February 2000 395 100%


March 2000
Operating System Count Percent
Win-NT 321 69.33
Linux (unknown distro) 45 9.72
Linux (RedHat) 21 4.54
Solaris 19 4.10
FreeBSD 13 2.81
Unknown 13 2.81
BSDI 9 1.94
Linux (Cobalt) 4 0.86
Windows 2000 4 0.86
Irix 3 0.65
Linux (ALZZA) 3 0.65
Win-95 2 0.43
Compaq True64 Unix 1 0.22
Linux (Mandrake) 1 0.22
Linux (Slackware) 1 0.22
NetBSD 1 0.22
NetWare 1 0.22
SCO 1 0.22
Total Defacements for March 2000 463 100%


April 2000
Operating System Count Percent
Win-NT 224 62.92
Linux (unknown distro) 31 8.71
Solaris 29 8.15
Linux (RedHat) 17 4.78
FreeBSD 15 4.21
Unknown 11 3.09
BSDI 10 2.81
Irix 7 1.97
Generic Unix 5 1.40
Linux (Cobalt) 2 0.56
MacOS 2 0.56
Windows 2000 2 0.56
Linux (Debian) 1 0.28
Total Defacements for April 2000 356 100%


May 2000
Operating System Count Percent
Win-NT 300 73.35
Linux (unknown distro) 22 5.38
Linux (RedHat) 20 4.89
BSDI 19 4.65
Solaris 17 4.16
FreeBSD 12 2.93
Irix 5 1.22
Linux (ALZZA) 5 1.22
Unknown 3 0.73
Compaq True64 Unix 1 0.24
Linux (Debian) 1 0.24
Linux (Mandrake) 1 0.24
NetBSD 1 0.24
Win-95 1 0.24
Windows 2000 1 0.24
Total Defacements for May 2000 409 100%


June 2000
Operating System Count Percent
Win-NT 245 64.64
Linux (unknown distro) 31 8.18
Solaris 27 7.12
Linux (RedHat) 21 5.54
Unknown 20 5.28
FreeBSD 12 3.17
BSDI 11 2.90
Irix 6 1.58
Windows 2000 4 1.06
Linux (Slackware) 1 0.26
OpenBSD 1 0.26
Total Defacements for June 2000 379 100%


July 2000
Operating System Count Percent
Win-NT 225 56.39
Linux (unknown distro) 50 12.53
Linux (RedHat) 38 9.52
Solaris 33 8.27
BSDI 16 4.01
FreeBSD 10 2.51
Windows 2000 7 1.75
Irix 5 1.25
Linux (ALZZA) 4 1.00
SCO 3 0.75
AIX 1 0.25
Compaq True64 Unix 1 0.25
Generic Unix 1 0.25
Linux (Cobalt) 1 0.25
Linux (Mandrake) 1 0.25
Linux (SuSE) 1 0.25
OpenBSD 1 0.25
Win-95 1 0.25
Total Defacements for July 2000 399 100%


August 2000
Operating System Count Percent
Win-NT 210 38.75
Linux (RedHat) 122 22.51
Linux (unknown distro) 89 16.42
Solaris 36 6.64
FreeBSD 24 4.43
BSDI 23 4.24
SCO 9 1.66
Windows 2000 9 1.66
Irix 6 1.11
Linux (ALZZA) 3 0.55
Unknown 3 0.55
Generic Unix 2 0.37
Linux (Debian) 2 0.37
Linux (SuSE) 2 0.37
Compaq True64 Unix 1 0.18
Linux (Cobalt) 1 0.18
Total Defacements for August 2000 542 100%


September 2000
Operating System Count Percent
Win-NT 168 35.29
Linux (RedHat) 110 23.11
Linux (unknown distro) 69 14.50
Solaris 44 9.24
Irix 30 6.30
FreeBSD 13 2.73
Windows 2000 13 2.73
BSDI 10 2.10
Linux (Conectiva) 3 0.63
Digital Unix 2 0.42
Linux (ALZZA) 2 0.42
Linux (Debian) 2 0.42
NetWare 2 0.42
AIX 1 0.21
Compaq True64 Unix 1 0.21
HPUX 1 0.21
Linux (Cobalt) 1 0.21
Linux (Mandrake) 1 0.21
Linux (SuSE) 1 0.21
SCO 1 0.21
Unknown 1 0.21
Total Defacements for September 2000 476 100%


October 2000
Operating System Count Percent
Win-NT 306 53.40
Linux (RedHat) 84 14.66
Linux (unknown distro) 60 10.47
Solaris 33 5.76
Irix 26 4.54
FreeBSD 18 3.14
Windows 2000 15 2.62
BSDI 6 1.05
AIX 5 0.87
SCO 5 0.87
Unknown 4 0.70
Linux (Debian) 2 0.35
Linux (Mandrake) 2 0.35
Linux (SuSE) 2 0.35
Digital Unix 1 0.17
Linux (ALZZA) 1 0.17
Linux (Conectiva) 1 0.17
NetBSD 1 0.17
OpenBSD 1 0.17
Total Defacements for October 2000 573 100%


November 2000
Operating System Count Percent
Win-NT 411 56.93
Linux (unknown distro) 72 9.97
Linux (RedHat) 67 9.28
Windows 2000 61 8.45
Solaris 36 4.99
Irix 29 4.02
BSDI 14 1.94
FreeBSD 8 1.11
Unknown 5 0.69
SCO 4 0.55
Generic Unix 3 0.42
Linux (Conectiva) 3 0.42
HPUX 2 0.28
Linux (Cobalt) 2 0.28
Digital OSF1 1 0.14
Digital Unix 1 0.14
Linux (Debian) 1 0.14
Linux (Mandrake) 1 0.14
Linux (SuSE) 1 0.14
Total Defacements for November 2000 722 100%


December 2000
Operating System Count Percent
Win-NT 396 57.98
Linux (RedHat) 75 10.98
Windows 2000 68 9.96
Linux (unknown distro) 57 8.35
Solaris 28 4.10
Irix 20 2.93
BSDI 11 1.61
FreeBSD 8 1.17
Linux (Conectiva) 8 1.17
Linux (SuSE) 3 0.44
AIX 2 0.29
Generic Unix 1 0.15
HPUX 1 0.15
Linux (Cobalt) 1 0.15
Linux (Debian) 1 0.15
Linux (Mandrake) 1 0.15
NetBSD 1 0.15
Win-95 1 0.15
Total Defacements for December 2000 683 100%


January 2001
Operating System Count Percent
Win-NT 465 51.84
Linux (RedHat) 177 19.73
Linux (unknown distro) 118 13.15
Windows 2000 72 8.03
Solaris 23 2.56
FreeBSD 12 1.34
BSDI 9 1.00
Linux (Conectiva) 7 0.78
Linux (Debian) 6 0.67
Irix 3 0.33
HPUX 2 0.22
Linux (ALZZA) 1 0.11
Linux (Mandrake) 1 0.11
Unknown 1 0.11
Total Defacements for January 2001 897 100%


February 2001
Operating System Count Percent
Win-NT 374 44.10
Linux (unknown distro) 175 20.64
Linux (RedHat) 137 16.16
Windows 2000 66 7.78
Solaris 30 3.54
FreeBSD 19 2.24
BSDI 9 1.06
Irix 9 1.06
Linux (Cobalt) 6 0.71
Linux (Debian) 5 0.59
Linux (Conectiva) 4 0.47
Linux (SuSE) 4 0.47
Linux (Mandrake) 3 0.35
Generic Unix 2 0.24
Unknown 2 0.24
AIX 1 0.12
Linux (ALZZA) 1 0.12
MacOS 1 0.12
Total Defacements for February 2001 848 100%


March 2001
Operating System Count Percent
Win-NT 426 48.03
Linux (unknown distro) 121 13.64
Linux (RedHat) 119 13.42
Windows 2000 89 10.03
Solaris 67 7.55
Irix 21 2.37
Generic Unix 12 1.35
Compaq True64 Unix 9 1.01
BSDI 7 0.79
FreeBSD 6 0.68
Linux (Conectiva) 6 0.68
Linux (Debian) 3 0.34
Linux (ALZZA) 1 0.11
Total Defacements for March 2001 887 100%


April 2001
Operating System Count Percent
Win-NT 877 56.73
Windows 2000 151 9.77
Linux (RedHat) 141 9.12
Linux (unknown distro) 122 7.89
Solaris 114 7.37
Irix 49 3.17
FreeBSD 28 1.81
SCO 21 1.36
BSDI 19 1.23
Compaq True64 Unix 5 0.32
Generic Unix 5 0.32
Unknown 4 0.26
Linux (Cobalt) 3 0.19
Linux (Conectiva) 3 0.19
HPUX 2 0.13
Linux (Mandrake) 1 0.06
Linux (SuSE) 1 0.06
Total Defacements for April 2001 1546 100%


May 2001
Operating System Count Percent
Win-NT 594 52.24
Windows 2000 336 29.55
Linux (unknown distro) 49 4.31
Linux (RedHat) 45 3.96
Irix 37 3.25
Solaris 36 3.17
FreeBSD 15 1.32
BSDI 6 0.53
SCO 3 0.26
Generic Unix 2 0.18
Linux (Cobalt) 2 0.18
Linux (Debian) 2 0.18
Linux (SuSE) 2 0.18
Unknown 2 0.18
AIX 1 0.09
Compaq True64 Unix 1 0.09
Linux (Conectiva) 1 0.09
Linux (Mandrake) 1 0.09
MacOS 1 0.09
PowerBSD 1 0.09
Total Defacements for May 2001 1137 100%


NOTES

Attrition began it's mirror in late 1998, and was not consistent until 1999. Then, we did not begin collecting OS data until August, 1999 -- hence the time range in these tables.


Something look amiss? Notify me:

munge@attrition.org
Last updated: Thu May 17 10:11:01 2001 GMT.

© 1999-2001 Copyright Matt Dickerson & Brian Martin
Excerpts from this page may be reproduced if Attrition and the URL
http://www.attrition.org/mirror/attrition/os.html are attributed.