Fans of Liverpool and other major Premier League clubs have been urged to change their passwords by experts.
Analysis by Dashlane has highlighted the most common sports team names which people use to protect their online accounts.
The password management company used an anonymised database provided by Gang Wang, an assistant professor in the Department of Computer Science at Virginia Tech in the United States, and focused on the Premier League and NFL.
The English top flight team mentioned most in passwords was Liverpool followed by London sides Chelsea and Arsenal.
Crystal Palace propped up the table.
“Coming up with a password can be a very personal and emotional choice, and the data clearly shows consumers like to use the teams they support as part of their password habits,” said Emmanuel Schalit, CEO of Dashlane.
“As an avid soccer fan, I understand the urge to align your accounts with your favourite teams – but it’s a major security risk.
“Along with using names, schools, and additional personally identifiable information, favorite teams should be avoided.”