Do you use Flash player? If you visit YouTube, you do. So this is important: there's an exploit going around that can infect you with a key logger. It's recommended you
upgrade to the latest version. Be sure to check
which version you're using. (The exploit apparently affects versions 9.0.115.0 and earlier.)
Some good info
here. If you're worried about an infection,
AVG Antivirus is what I use.
If you know what you're doing, you can lower the likelihood of infection by opening the hosts file by going to Start -> Run and then cut+pasting this:
notepad c:\windows\system32\drivers\etc\hosts
And then add this to the bottom of the file
127.0.0.1 tongji123.org
127.0.0.1 bb.wudiliuliang.com
127.0.0.1 user1.12-26.net
127.0.0.1 user1.12-27.net
127.0.0.1 ageofconans.net
127.0.0.1 lkjrc.cn
127.0.0.1 psp1111.cn
127.0.0.1 zuoyouweinan.com
127.0.0.1 user1.isee080.net
127.0.0.1 guccime.net
127.0.0.1 woai117.cn
127.0.0.1 wuqing17173.cn
127.0.0.1 dota11.cn
127.0.0.1 play0nlnie.com
127.0.0.1 0novel.com
Those are some of the domains the exploit files are being served from. It might not be as effective anymore since it's spreading fast but it couldn't hurt.
If you really want to take it to the next level, you can do the following
1) Disable Flash entirely (Probably not necessary)
- or -
2) Download
NoScript and
FlashBlock for Firefox. (This is what I did .. it might be too much for most users, though.)
In most cases, simply updating your Flash player and keeping an up-to-date anti-virus program + firewall should keep you relatively safe.
Be aware that even if you only visit sites you "trust", you're not safe if you use the old version of Flash Player. Already, it's said that at least 250,000 websites have been affected with the malicious Flash code.