This is why you should never let your computer save your passwords

Oops.

Are you playing it safe online? Cyber security is the upmost important, without even mentioning 4chan and iCloud.

However, considering this most of us are still really crap at setting secure passwords and protecting our online identities.

One of the worst mistakes we're all making? Clicking 'yes' when asked if we want our computer to remember a password.

Cyber security experts have found that ad firms may be able to create invisible login forms, tricking your browser into filling out your personal details without your permission. This enables them to gather personal information about you, including your browsing history, so they can better target their ads at you. Sneaky, we know.

Michael Kaiser, an executive director at the National Cyber Security Alliance, spoke to Good Housekeeping about the issue.

'Since passwords are for many people are a security measure, any time they are put at risk, it's a pretty serious concern,' he said.

'If anyone was able to gain access to your computer and then go to website where you had an autofill turned on, they are able to get into your accounts,' Michael explained. 'In general, it's not a good idea to be using autofill.'

Another mistake we're all making? The passwords we choose to protect us online.

Password management company, SlashDate, released figures in 2015 revealing the world's most common passwords - and they are pretty unbelievable.

So, if your password is one of these, change it. Change it right now.

The 10 most common passwords

1. 123456 2. Password 3. 12345678 4. Qwerty 5. 12345 6. 123456789 7. Football 8. 1234 9. 1234567 10. Baseball

Consider yourself warned.