Over 14 million login credentials leaked from six ISPs in major data breach — here’s what we know

Back View of Young Black Man Walking and Looking at Big Digital Screens Glitching While Displaying Code Lines. Professional Hacker Breaking Through Cybersecurity Protection System, Changing Code.

• Tens of millions of credentials may have been leaked following an attack on one of Japan's largest ISPs
• The attack leveraged a vulnerability in a third-party software used by KDDI
• Five other ISPs were also affected in the attack

A data breach that has potentially exposed the email and password combinations for over 14 million customers across six internet service providers (ISPs) has been disclosed by Japanese telecoms provider KDDI Corporation.