Deleted

I read that as steamfists.

Keyloggers can also pick up your email.

If they get your email as well SteamGuard is pointless.

Just don't download anything that says FREE next to it.

The most direct way is to hack your email, at which point SteamGuard becomes trivial to bypass. Lately there have been keygens floating around which secretly give crooks remote access to your computer. They can use those to get into your email account and - from there - your Steam account.

In most cases, the biggest problem sits infront of the computer.
Be careful and look before you click or download anything you dont know where it comes from.

People who have been "hacked" often deserve it, or have it coming. Because virtually every time they are not hacked at all.
People often get "phished" So if you are smart enough too never give away personal information you have nothing to worry about.

Not everyone has SteamGuard enabled, and not everyone has a different password in steam as in their email account either :/, add the keyloggers and you're all set.

Its just a matter of being cautious.

Nunca subestimes la estupidez

how do I change my password then... I am a little worried after all these hacking posts and threads...

From what I've seen, generally someone posing as a fake Steam / Valve / VAC rep - See Here

They will simply ask for your password "To proove it's you", and most people will simply give it to them, because (Contrary to what that line says about - You know - Never giving your password to ANYONE) they think it's a real Steam admin.

Eg: (The following is fake - Just made up by me, on the spot)

User Bob gets an invite from Steam Admin John
User Bob accepts the invite
Steam Admin John: Hi Bob!
Bob: Hi Steam Admin John!
Steam Admin John: It has recently come to our attention that your account may have been compromised!
Bob: Oh no - This is terrible! Is there anything I can do about it? D:
Steam Admin John: Sure - I just need to verify you're the owner of the account.
Bob: Oh, that's easy!
Steam Admin John: Ok - Just give me your password, so I know you're the owner of the account.
Bob: But I'm not supposed to give my password to anyone!
Steam Admin John: That's OK - I work for Steam! You can see my name!
Bob: Oh, you're right - My password is 'littlebobby'
Steam Admin John: Ok, looks valid - Enjoy the rest of your day Bob!
Bob: Thanks John - Bye!
Steam Admin John: Bye Bob!
Steam Admin John has logged offline

The next day

Bob: This is weird - My password doesn't work - And all my TF2 items, inventory games, and coupons are missing! But Steam Admin John said it was safe! WAAAAAAAAAA! I must complain that some mysterious uber-h4ck0rz0r hacked into my comp00t0r and stole my Steam account! WAAAAAAAAAAAAAAAAAAAAA!!!!