A data breach reportedly resulted in the leak of 16 billion records containing passwords from major sites such as Apple, Google and Facebook.

But how worried should you be, and what can you do to protect yourself?

Was this a new data breach?

The leak has been reported as a new data breach, but this wasn't a new case of websites being compromised.

Instead, it appears to be a case in which previously stolen information was packaged into a database and sold.

According to Cybernews, only one of the exposed datasets had previously been reported. Researchers also claim that datasets like these emerge every few weeks, a sign of how prevalent it is for sensitive information to be compromised.

According to a report published this week, Cybernews researchers recently discovered 30 exposed........

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