Tekspace

The Top 100

Biggest
Data Breaches

of All Time

Last Update October 2024

10M Records
100

Excellus Healthcare August 2015

11M Records
99

Premera Blue Cross March 2015

11.27M Records
98

HCA Healthcare August 2023

12M Records
97

Quest Diagnostics August 2018

12.36M Records
96

Apple / Blue Toad September 2012

12.5M Records
95

The Bank of New York Melon August 2008

13M Records
94

Nexon November 2011

14M Records
93

Blizzard Entertainment August 2012

Latitude Financial March 2023

14.8M Records
91

500px February 2019

15M Records
90

Epik January 2021

15.1M Records
89

Trello January 2024

19.9M Records
88

Cutout.Pro February 2024

20M Records
87

AOL August 2006

Taobao February 2016

8fit February 2019

21.5M Records
84

US Office of Personnel Management June 2015

22M Records
83

Yahoo! August 2009

EyeEm February 2019

24M Records
81

Zappos January 2012

25M Records
80

UK Revenue and Customs November 2007

Animoto August 2018

26.15M Records
78

Ticketfly June 2018

26.5M Records
77

US Department of Veteran Affairs May 2006

28M Records
76

HauteLook February 2019

28.72M Records
75

Taringa September 2017

30M Records
74

Wawa January 2020

Plex August 2022

Lionsgate March 2023

32M Records
71

RockYou December 2009

Ashley Madison July 2015

33M Records
69

Twilio July 2024

35M Records
68

Valve Corporation November 2011

37M Records
67

T-Mobile November 2022

39.9M Records
66

Manipulated Caiman July 2024

40M Records
65

CardSystem Solutions July 2005

42M Records
64

TikTok August 2020

43M Records
63

Weebly February 2016

45M Records
62

TJ/TK Maxx May 2008

47M Records
61

T-Mobile August 2021

49M Records
60

Dell April 2024

50M Records
59

Evernote March 2013

55M Records
58

Philippine Commission on Elections March 2016

56.25M Records
57

CheckPeople January 2020

57.6M Records
56

Uber November 2017

60M Records
55

United States Postal Service November 2018

65M Records
54

Tumblr May 2016

68M Records
53

Dropbox July 2012

70M Records
52

US National Archives and Records Administration October 2009

77M Records
51

Sony PlayStation April 2011

81M Records
50

JPMorgan Chase June 2014

90M Records
49

Facebook (Cambridge Analytica) March 2018

91M Records
48

Tokopedia May 2020

92M Records
47

AOL June 2004

MyHeritage June 2018

100M Records
45

Heartland Payment Systems May 2008

Quora December 2018

Justdial April 2019

Mobile TeleSystems (MTS) September 2019

106M Records
41

Capital One July 2019

108M Records
40

Mountberg Limited January 2019

109M Records
39

Home Depot April 2014

110M Records
39

Target November 2013

120M Records
37

Tetrad Computer Applications February 2020

140M Records
36

Canva May 2019

145M Records
35

eBay March 2014

150M Records
34

Under Armour (MyFitnessPal) March 2018

152M Records
33

Adobe October 2013

162M Records
32

Dubsmash December 2018

165M Records
31

LinkedIn June 2012

198M Records
30

US Republican National Committee June 2017

200M Records
29

Court Ventures (Experian) October 2013

201M Records
28

US Census Bureau March 2020

218M Records
27

Zynga September 2019

235M Records
26

NetEase October 2015

Instagram August 2020

250M Records
24

Microsoft January 2020

276M Records
23

Facebook December 2019

270M Records
22

Wattpad July 2020

275.27M Records
21

MongoDB April 2019

299.05M Records
20

Truecaller May 2019

320M Records
19

Airtel December 2019

340M Records
18

Exactis June 2018

412M Records
17

Friend Finder Networks November 2016

427M Records
16

MySpace June 2013

500M Records
15

Yahoo September 2014

Marriott International September 2018

530M Records
13

Facebook April 2021

538M Records
12

Sina Weibo March 2020

540M Records
11

Facebook, Cultura Colectiva April 2019

560M Records
10

Ticketmaster May 2024

605M Records
9

Equifax July 2017

700M Records
8

LinkedIn June 2021

885M Records
7

The First American Financial Corporation May 2019

1.1B Records
6

Aadhaar January 2018

Alibaba November 2019

1.4B Records
4

River City Media March 2017

2B Records
3

Verifications.io February 2019

2.692B Records
2

Collection #1-5 January 2019

3B Records
1

Yahoo August 2013

Summary

A top-down look at the top 100 data breaches of all time

225M

Average Records Per Breach

81M

Median Records Breached

24.81B

Total Records Breached

March

Most Breached Month

2021

Most Breached Year

5

Repeat Offenders

Repeat Offenders

Organisations that fell victim to a large-scale data breach on
more than one occasion.

LinkedIn

2 Breaches 865M Records
2

Yahoo!

3 Breaches 3.52B Records
tecspace 1

Facebook

2 Breaches 797M Records
3

Top 100 by Industry

Total compromised records by industry, in the top 100 data breaches of all time.

Breach Scale Over Time

How breach size and frequency has changed over time.