According to the source, the data comes from an analysis of "over 319 million plaintext passwords compiled from various non-hashed data breaches, in the form of SHA-1 hashes."
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Charset distribution of leaked user passwords worldwide 2017
The statistic shows the distribution of password character sets found among various databases leaked online as of 2017. From 320 million hashed passwords that were analyzed, 49 percent were found to be a mix of numbers and lowercase alphabetic characters. Just two percent of passwords were a mix of numbers, upper- and lowercase alphabetic characters, and symbols.
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CynoSure Prime. (August 29, 2017). Character set distribution of user passwords worldwide as of August 2017 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/744183/worldwide-character-set-distribution-of-passwords/
CynoSure Prime. "Character set distribution of user passwords worldwide as of August 2017." Chart. August 29, 2017. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/744183/worldwide-character-set-distribution-of-passwords/
CynoSure Prime. (2017). Character set distribution of user passwords worldwide as of August 2017. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/744183/worldwide-character-set-distribution-of-passwords/
CynoSure Prime. "Character Set Distribution of User Passwords Worldwide as of August 2017." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 29 Aug 2017, /statistics/744183/worldwide-character-set-distribution-of-passwords/
CynoSure Prime, Character set distribution of user passwords worldwide as of August 2017 ÌÇÐÄÆƽâ°æ, /statistics/744183/worldwide-character-set-distribution-of-passwords/ (last visited July 25, 2026)
Character set distribution of user passwords worldwide as of August 2017 [Graph], CynoSure Prime, August 29, 2017. [Online]. Available: /statistics/744183/worldwide-character-set-distribution-of-passwords/
