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Cookie Entropy

Token cost: 10

Enter a URL and we'll make a number of concurrent connections to the target website and retrieve its cookies. We'll then test the entropy and levenshtein distance of the cookies to check for security vulnerabilities.

Number Comparisons - Choose how many times to scan the URL.
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Entropy

Entropy is a measure of the randomness of the data. The higher the entropy, the more difficult it is to predict the next value. This is important for session cookies as they should be difficult to guess. If the entropy is low, it may be possible to guess the next value and hijack the session.

Levenshtein

Levenshtein distance, also known as edit distance, is a measure of the difference between two sequences, most commonly strings of characters. It represents the minimum number of single-character edits required to change one word into the other. The allowed edits are: Insertion of a single character. Deletion of a single character.Substitution of a single character for another. The distance value displayed on this page shows the edits required between each cookie value.