It is called salt and useful so long as the main part of the password is generally secure without. I have a couple common things I add to any password I have to create (generally meaning my password manager’s automatic generation is rejected), but this is only useful because I figure humans won’t guess the rest (nor will they feed that into a computer to guess the rest which probably isn’t long enough to be secure alone), and the whole then becomes long enough that a computer can’t brute force it. Note that I don’t always use exactly the same sale factors and I don’t put them in the same place - if you know what I try you can brute force my hand generated passwords with a computer but the job is much harder in hopes that you give up.
But if at all possible I will prefer to use a generate password from my password manager which is even more secure. Humans are very bad are creating passwords - even humans who know all the things to get wrong tend to be bad at it.
It is called salt and useful so long as the main part of the password is generally secure without. I have a couple common things I add to any password I have to create (generally meaning my password manager’s automatic generation is rejected), but this is only useful because I figure humans won’t guess the rest (nor will they feed that into a computer to guess the rest which probably isn’t long enough to be secure alone), and the whole then becomes long enough that a computer can’t brute force it. Note that I don’t always use exactly the same sale factors and I don’t put them in the same place - if you know what I try you can brute force my hand generated passwords with a computer but the job is much harder in hopes that you give up.
But if at all possible I will prefer to use a generate password from my password manager which is even more secure. Humans are very bad are creating passwords - even humans who know all the things to get wrong tend to be bad at it.