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Using CAPTCHAs

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Pro PHP Security

Abstract

We begin our discussion of the components of a secure application here in Chapter 9 by extending the notion of access control to the users of your online application.

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© 2010 Chris Snyder, Thomas Myer, and Michael Southwell

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Snyder, C., Myer, T., Southwell, M. (2010). Using CAPTCHAs. In: Pro PHP Security. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4302-3319-0_9

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