Eight billion passwords are involved in whatâs being called the largest password leak of all time.The password leak, which was posted on a popular hacker forum, appears to be a collection of data leaks and breaches from the last 10 years.For some context: While the leak contains more than 8 billion passwords, there are just under 5 billion people online worldwide.Some cyber experts are questioning how legitimate the list really is, with some saying the actual number of real passwords is more than 800 million.Protect yourselfIf youâre concerned about your passwords, the best thing to do is change them often.Consider using a password manager.There is a website that allows you to check whether your email address is involved in a data breach. Click here.