The British spying agency, found to have been conducting wholesale surveillance on UK citizens, has recommended that the public make their passwords less complex.

In a brand new document called ‘Password guidance: simplifying your approach’, the company gives a range of guidelines to keep consumers safe. That includes rolling back previous guidance “that complex passwords are ‘stronger’” — instead recommending that people simplify their approach.

The agency gives a range of hints to those working in IT as well as normal consumers.

Those include warning people to change their default passwords, to make sure that accounts can be locked out if they’re under attack and avoid storing passwords as plain text files that can be read by anyone.

The agency also warns against the problems of “password overload”. That is what happens when people create too many complex and unmemorable passwords, which leads them to write them down or re-use them and so become unsafe.

Those complicated passwords are often the result of organisations imposing rules about the complexity of passwords — requiring that they are a certain length, for instance, or include special characters. But instead companies should just create more security rules, so that people can use their own, more simple passwords.

Those simple passwords might be made up of just three simple words, for instance. Or users could sign up for password managers — software that generates and then stores the passwords so that are both complex and never have to be remembered.

“Software password managers can help users by generating, storing and even inputting passwords when required,” the report says. “However, like any piece of security software, they are not impregnable and are an attractive target for attackers.”