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The article discusses the issue of security surrounding the use of four-digit PINs, highlighting that almost one in ten people use the same numbers. Studies show that users often choose easy-to-remember combinations, which significantly weakens the security of their accounts. Experts emphasize that such practices are dangerous, as hackers can easily guess these numbers. Additionally, the article addresses how security can be improved by using longer and more complex passwords. Readers are encouraged to consider implementing better security practices to protect their personal data.