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What's the best proactice for user id's

Liked to know if short user id's not not a best practice.  What would be a best practice for user IDs
3 Solutions
there is no such rule but usually its advised to keep it greater than 5 or 6 characters, so that its not easy to guess them.
Opinions will vary on this. However as a rule, the longer the user ID, the more difficult for someone else to guess it.

Personally I would reccommend no less than 8 characters and have at least one letter, one number and one 'special character' &*( etc. within those eight.

This combined with a password of similar length will help to protect your data
I would suggest using something unique to each employee like there employee number or a standard like first 3 letters of there first name and 3 first of there last name. Ex: John Doe would be johdoe. The real emphasis should be on password complexity. The password should be complex to prevent unauthorized people from logging in the system and causing security issues.
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