What are the potential security risks of storing multiple data values in a single hidden HTML input field in PHP?

Storing multiple data values in a single hidden HTML input field in PHP can pose a security risk known as data tampering. An attacker could potentially manipulate the values within the input field to gain unauthorized access or perform malicious actions. To mitigate this risk, it is recommended to store each data value in a separate hidden input field. 

<input type="hidden" name="data1" value="<?php echo htmlspecialchars($data1); ?>">
<input type="hidden" name="data2" value="<?php echo htmlspecialchars($data2); ?>">
<input type="hidden" name="data3" value="<?php echo htmlspecialchars($data3); ?>">

Keywords

security risks hidden HTML input field multiple data values PHP data storage

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