TTPwire Vol. 1 · MITRE ATT&CK·Tagged

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Huntress

27 Biggest Data Breaches Globally (+ Lessons) 2025 | Huntress

2025-10-03 · Read original ↗

ATT&CK techniques detected

6 predictions
T1589.001Credentials
55%
“users who may have used the same password on other websites, making them vulnerable to credential stuffing attacks. 18. court ventures ( experian ) date : october 2013 location : united states records exposed : 200 million types of data : names, addresses, dates of birth, and soc…”
T1657Financial Theft
53%
“could use it for continued attacks like identity theft and phishing scams. the incident highlighted the dangers of both internal security lapses and the potential for a single compromised account to be a gateway to a huge data breach. 23. heartland payment systems date : may 2008…”
T1657Financial Theft
44%
“users who may have used the same password on other websites, making them vulnerable to credential stuffing attacks. 18. court ventures ( experian ) date : october 2013 location : united states records exposed : 200 million types of data : names, addresses, dates of birth, and soc…”
T1190Exploit Public-Facing Application
41%
“the company ' s failure to patch a known vulnerability in their web application software, apache struts. threat actors exploited this flaw undetected for more than two months to gain access to the company ' s network and steal highly sensitive consumer data. because equifax colle…”
T1195Supply Chain Compromise
36%
“bank ' s network by exploiting a vulnerability in one of their servers that lacked multi - factor authentication. once inside, they were able to compromise the data of customers who had used the bank ' s website, chase. com, or its mobile app. while the breach was a big one, its …”
T1003OS Credential Dumping
30%
“users who may have used the same password on other websites, making them vulnerable to credential stuffing attacks. 18. court ventures ( experian ) date : october 2013 location : united states records exposed : 200 million types of data : names, addresses, dates of birth, and soc…”

Summary

Learn about the biggest data breaches of the past 20 years, how they happened, and how you can better protect your organization from major threats.