By now most of the Twitter users probably heard Twitter was hit with a potentially harmful virus. 

For those who did not see the posts around the net here is what basically happened.

Twitter profile pages are being infected with cross site scripting (XSS) attack.  What this really means is that Twitter profile pages are being compromised by hidden javascript.  When you visit an infected profile page, this script runs and infects your Twitter account.  The script then send Tweets out to your followers to visit StalkDaily.com.  The virus also inserts itself into your bio pages, allowing your bio page to become a host to infect others.

StalkDaily had said they are not the orginator of the attack.

If you are infected do the following:

1. Go to your Twitter account settings and switch your bio back to the normal setting.

2. Clear out your cache and cookies from your browser.

3. As a precaution, change your Twitter account password.

Twitter was pretty fast on knocking this down and posted this their status page:

Earlier today we were informed of a malicious site that was spreading links to StalkDaily.com on Twitter without user consent via a cross-site scripting vulnerability. We've taken steps to remove the offending updates, and to close the holes that allowed this "worm" to spread.

No passwords, phone numbers, or other sensitive information were compromised as part of this attack.