16 Billion Passwords Leaked Online: What You Need to Know
A massive data leak is shaking the digital world: Security researchers have discovered that approximately 16 billion passwords are currently circulating online — many in plain text. These credentials come from various sources and affect users of major services such as Apple, Google, Microsoft, Facebook, PayPal, and many more.
But what's behind the leak? Who is affected — and how can you protect yourself?
What was leaked?
The leaked credentials are the result of years of data breaches, hacks, and compromised platforms. Now, they’ve been compiled into so-called “credential dumps”, found on the dark web and in hacker forums — some in plain text, others as hashed (but often crackable) passwords.
In total:
- around 16 billion entries have been exposed
- passwords with and without associated email addresses are included
- many accounts are still active or recently used
Why is this dangerous?
Even if many of the credentials are from older breaches, the threat is still serious: Most people reuse the same passwords across multiple services. That means one compromised login can unlock access to many different accounts — from social media to online banking.
Additionally, these passwords are often used in brute-force or dictionary attacks, where hackers automatically test large lists of known credentials. Weak or common passwords like “123456” or “password” are especially vulnerable.
What you should do now
- Change your passwords immediately
Start with critical accounts: email, cloud services, banking, social media. Use unique, strong passwords for each service. - Enable two-factor authentication (2FA)
Wherever possible, enable 2FA. Even if someone steals your password, they won't be able to log in without your mobile device. - Use a password manager
Tools like Bitwarden, 1Password, or KeePass can help you create and securely store strong passwords — without needing to remember them all. - Check if you’ve been exposed
Use tools like Have I Been Pwned to see if your email address appears in known leaks. - Switch to passkeys for the future
Apple, Google, and Microsoft are promoting passwordless login methods. Biometric systems and FIDO2-based passkeys are safer and easier to use.
Bottom line: Stay vigilant
This latest leak is a clear reminder that it’s time to rethink your password habits. Cybercriminals never sleep — and the more weak passwords you use, the easier it is to fall victim.
Taking action today means a more secure tomorrow.
CURIAWEB supports you with digital strategy, cybersecurity, and data protection. Get in touch if you want to secure your infrastructure for the long term.
