An urgent alert has been issued to Gmail users after a massive data breach leaked over 183 million passwords and login credentials, impacting more than 183 million accounts. The breach, which occurred in April 2025 and was disclosed in October, involves a collection of 'stealer logs' compiled from malware activities over nearly a year, containing email addresses, website entries, and passwords. Cybersecurity expert Troy Hunt, owner of Have I Been Pwned, confirmed that the leaked data includes Gmail credentials along with other major providers like Outlook and Yahoo, affecting a broad user base. Users are advised to check if their email has been compromised by visiting Have I Been Pwned, entering their email address, and reviewing breach reports. If affected, it is crucial to change passwords immediately and enable two-factor authentication (2FA) to enhance security. The breach exposes not only email passwords but also the potential for hackers to access associated logins across various platforms, increasing the risk of identity theft and cyberattacks. Experts recommend using unique passwords for each account and employing password managers for better security. Google has stated that it does not attribute this to a new Gmail-specific attack but emphasizes its layers of defense, including password resets and 2FA, to protect users.