The most common passwords include “123456”, “12345678”, “123456789”, “admin”, “1234”, “Aa123456”, “12345” and “password”.

The researchers also noted a sharp rise in region-specific weak passwords such as “India@123”, which emerged as one of the most frequently used in India.

The report said nearly one-quarter of the top 1,000 passwords consisted only of numerical strings, while 38.6% contained the sequence “123”.

Another 2% included “321”, and 3.1% contained the letters “abc”.

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Security experts warn that such passwords are highly vulnerable to automated cracking tools.

They advise using unique passwords of at least 12 characters that combine upper- and lower-case letters, numbers and symbols, and enabling two-factor authentication to reduce the risk of account breaches.

The top 10 most-used passwords are:

123456
12345678
123456789
admin
1234
Aa123456
12345
password
123
1234567890