The following is based on some trends observed in public research and security analysis, but it should be noted that the actual situation varies from person to person, and there is a large overlap in "common password patterns" among different groups of people. The following is only a rough summary of statistics and trends, which should not form a stereotype of specific groups, nor can it be applied to all individuals. 1. Young groups (such as around 15-24 years old) • Tend to try words, abbreviations or combinations in "Internet pop culture", and may use words commonly seen in movies, games, and music; • Due to the overall digital growth environment, they sometimes choose patterns that are easy to remember but also easy to guess by social engineering, such as consecutive numbers (such as "123456" or "111111"), simple letter sequences, or consecutive letter and number combinations on the keyboard; • Some young people may think that using a fixed template (such as initials + birthday year) is cool and convenient, but this template may be more common among their peers. 2. Middle-aged group (approximately 25-40 years old) • People in this age group tend to be closely related to work, marriage and family, and tend to incorporate dates that are meaningful to them (birthdays, anniversaries) or names of relatives into their passwords; • At the same time, they may combine uppercase and lowercase letters, numbers and symbols to meet the platform's complexity requirements, but if the "complexity" is merely a formal change and does not deviate from clues that are highly relevant to personal information, it can also pose a security risk; • Some people may develop a habit of memorizing fixed patterns before using password management tools. If this pattern is made public or leaked, it can easily affect other users in the same group. 3. Elderly group (over 40 years old) • Users in this group may be more accustomed to using simple passwords that have been used for a long time (such as fixed family-related words, anniversaries, names of relatives, etc.). Due to their fixed memory and usage habits, they are more difficult to adapt to the requirement of frequent password changes; • They are sometimes not easy to accept too complex rules, so passwords are often easy to remember and closely related to personal or family information. Words and dates; • In some cases, some simple plain text or patterned passwords such as repeated numbers and linear keyboard sliding are also seen. They are different from the popular cultural elements commonly used by young users, but they are also easy to be guessed by attackers using common sense information. In general, different age groups are often affected by the following factors when choosing passwords: - Memory habits (young groups may be more inclined to popularity and change, while middle-aged and elderly groups are more likely to rely on long-term information); - Understanding of security awareness (sometimes the simpler the password, the more it can make people think of the most basic and easy-to-guess patterns); - Adaptation to technology (the popularity of using password management tools, two-step verification, etc. is also related to age and digital literacy). It is important to note that any age group can fall into the trap of common password patterns, and attackers often try these statistically popular patterns. Therefore, regardless of the group, it is recommended to use truly random passwords or use password managers to generate passwords, and enable multi-factor authentication to improve overall security.