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Credential Stuffing 101

How these attacks work, why they persist, and what you can do to prevent them
Credential Stuffing 101
“As long as there are criminals willing to pay for stolen data and consumers failing to protect themselves, there will be people working to access data that isn’t theirs.”

Like all trends, cyber threats come in waves and credential stuffing attacks are no exception. Their sudden surge in popularity sends cybersecurity teams scrambling to respond to these overwhelming attacks, leaving little room to educate themselves and users on preventive measures, let alone address the underlying concerns that allow them to flourish. Among them:

  • Gigantic troves of stolen user account credentials are widely available for criminals to purchase
  • Consumers of digital services insist on using weak, easy-to-remember passwords for multiple accounts
  • Automated credential stuffing software makes perpetrating these malicious acts fairly easy

Regardless of your industry, credential stuffing is an equal opportunity offender and the implications are very real. In this report, SpyCloud taps its expertise in helping organizations recover exposed credentials to help you understand the anatomy of credential stuffing attacks, why they persist, and what you can do to prevent them.

Download the PDF version of the whitepaper to print or share with others.


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We’re on a mission to make the internet a safer place by disrupting the criminal underground. Together with our customers, we aim to stop criminals from profiting off stolen data.

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