There's two things needed for a good password
1. it needs to be complex (so use at least 3 out of lower and upper case characters, numbers and extended characters like :@$Ł%
2. use a different password for every site.
Now for No 1 you can see how secure your password is here..
just try 'Mercedes' then add SLK, then a ! and see how much longer it would take to hack.
For No 2, this is really IMPORTANT! If you use the same password for different sites you're running a massive risk. You only hear about hacks on the big players Yahoo!, Facebook, TalkTalk, Dropbox but it's the small sites that get hacked and you'll never know about it, so never change your password.
So, this is how I've been told to make a good password that's different on every site...
1st choose 2 unconnected words
2nd make it complex by converting some letters into numbers or adding symbols
i.e ‘Blue Rapid’ could be ‘Blu3 [email protected]
This is now your ‘base’ password which is always the same, into this you add different numbers for each site by converting the first 2 characters of the site address into numbers.
would use characters ‘T’ and ‘E’
These equate to ‘20’ and ‘5’ when counted through the alphabet with A=1, B=2, C=3 etc
So, the password for TEsco would be [email protected]
The password for SLkworld would be [email protected]
And the password for AMazon would be [email protected]
You now have an easy to remember password that’s complex and different for every site.
I find this really works well because the complex password remains the same, you find it easy to remember as you're using it all the time and just adding in the different numbers.
The other option is to use a password manager like lastpass https://www.lastpass.com/
as this makes and stores very complex passwords for each of your sites.
And lastly, if you need a secure password and can't think of one, go to this site and each time you'll be given secure password. https://www.dinopass.com/password/strong
Hope this helps.