51 | 51.com / xx5.com | 2019-08-09 | 43.12M Users
by thelastwhitehat - Tuesday January 20, 2026 at 01:20 AM
#1
[Image: df3c5bffbd7b6984917bfe8a4b4df8d6df1a1604.png]

Description:
In August 2019, the popular Chinese social networking site 51 (51.com & xx5.com) was allegedly breached, resulting in the compromise of approximately 43,123,991 users with records dating between 2003 and 2019. The breach contains 4,165,755 unique email addresses with ~79.20% being @qq.com. It should be noted that this is only a partial breach and does not include all users from 51, which in June 2009, had over 160 million registered users. Due to limited online information, the original filename containing the incorrect breach date of "September 2016," inconsistencies in the data fields, and the breach involving a Chinese website, the authenticity of the breach cannot be fully verified. If others have more information about this breach, such as articles or posts discussing it, feel free to share it below. The compromised data includes full names, usernames, email addresses, genders, IP addresses, QQ IDs, and more.

Analysis:
Spoiler Spoiler

Samples:
Spoiler Spoiler

Downloads:
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#2
thanks for share
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#3
thanks for share
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#4
thanks for the data
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#5
(01-20-2026, 01:20 AM)thelastwhitehat Wrote:
[Image: df3c5bffbd7b6984917bfe8a4b4df8d6df1a1604.png]

Description:
In August 2019, the popular Chinese social networking site 51 (51.com & xx5.com) was allegedly breached, resulting in the compromise of approximately 43,123,991 users with records dating between 2003 and 2019. The breach contains 4,165,755 unique email addresses with ~79.20% being @qq.com. It should be noted that this is only a partial breach and does not include all users from 51, which in June 2009, had over 160 million registered users. Due to limited online information, the original filename containing the incorrect breach date of "September 2016," inconsistencies in the data fields, and the breach involving a Chinese website, the authenticity of the breach cannot be fully verified. If others have more information about this breach, such as articles or posts discussing it, feel free to share it below. The compromised data includes full names, usernames, email addresses, genders, IP addresses, QQ IDs, and more.

Analysis:
Spoiler Spoiler

Samples:
Spoiler Spoiler

Downloads:

thx
Reply
#6
(01-20-2026, 01:20 AM)thelastwhitehat Wrote:
[Image: df3c5bffbd7b6984917bfe8a4b4df8d6df1a1604.png]

Description:
In August 2019, the popular Chinese social networking site 51 (51.com & xx5.com) was allegedly breached, resulting in the compromise of approximately 43,123,991 users with records dating between 2003 and 2019. The breach contains 4,165,755 unique email addresses with ~79.20% being @qq.com. It should be noted that this is only a partial breach and does not include all users from 51, which in June 2009, had over 160 million registered users. Due to limited online information, the original filename containing the incorrect breach date of "September 2016," inconsistencies in the data fields, and the breach involving a Chinese website, the authenticity of the breach cannot be fully verified. If others have more information about this breach, such as articles or posts discussing it, feel free to share it below. The compromised data includes full names, usernames, email addresses, genders, IP addresses, QQ IDs, and more.

Analysis:
Spoiler Spoiler

Samples:
Spoiler Spoiler

Downloads:
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#7
I don't know what happened.
Simply reply to unlock.
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#8
thx for this, dude!
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#9
(01-20-2026, 01:20 AM)thelastwhitehat Wrote:
[Image: df3c5bffbd7b6984917bfe8a4b4df8d6df1a1604.png]

Description:
In August 2019, the popular Chinese social networking site 51 (51.com & xx5.com) was allegedly breached, resulting in the compromise of approximately 43,123,991 users with records dating between 2003 and 2019. The breach contains 4,165,755 unique email addresses with ~79.20% being @qq.com. It should be noted that this is only a partial breach and does not include all users from 51, which in June 2009, had over 160 million registered users. Due to limited online information, the original filename containing the incorrect breach date of "September 2016," inconsistencies in the data fields, and the breach involving a Chinese website, the authenticity of the breach cannot be fully verified. If others have more information about this breach, such as articles or posts discussing it, feel free to share it below. The compromised data includes full names, usernames, email addresses, genders, IP addresses, QQ IDs, and more.

Analysis:
Spoiler Spoiler

Samples:
Spoiler Spoiler

Downloads:
Reply
#10
is this the leak from 2016 or really 2019?
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