Don't click on the link from any email begin with "wow this is crazy you should give it a look"

Recently I got many emails claimed from my friends, my relatives and my family. Their subject line had a simple word such as "hi", "hey", "Fwd:" or "re:". The body had only one sentence begin with these words:

"wow this is crazy you should look into this ..."

"you should check this out ..."

"this is crazy you should give it a look ..."

"check this out wow ..."

"wow this is crazy you should give it a look ..."

Since senders are in my contact list, these spams bypassed spam filter and landed in my inbox. All from Yahoo account and sent from oversea. It looked like these Yahoo emails were hacked. If you are using Yahoo, check your Sent folder to see any unauthorized emails sent out. If your Yahoo was hacked and sent the spam, you should:

1. Changed your password immediately.
2. Scan your computer for virus, trojans. For Windows computer, download Microsoft Security Essentials, a free anti-virus software from Microsoft, at http://windows.microsoft.com/en-US/windows/products/security-essentials. For Mac OS computer, download Sophos Anti-Virus for Mac Home Edition at http://www.sophos.com/en-us/products/free-tools/sophos-antivirus-for-mac-home-edition.aspx. For Ubuntu, GNU/Linux get ClamAV,  an open source (GPL) antivirus engine designed for detecting Trojans, viruses, malware and other malicious threats. 

I agreed with James Snider in his blog post:

In today’s world, you just can not click links or open files that people email you. There are no trusted people. Viruses get on their computer and they will never know it.

Not only Yahoo email users had this problem but Hotmail too. Greg Lirette detailed his experience in "Spam sent from my Hotmail account".

That why I'm using Gmail and two-step verification and separate Yahoo, Hotmail accounts for difference tasks: social, testing, mailing list subscription, registration, personal finance, professional ...

For more info:

1. Prevent Sending Spam with my Yahoo Account? (http://superuser.com/questions/413734/prevent-sending-spam-with-my-yahoo-account)
2. The Palantír byjamessnider (http://jamesbsnider.wordpress.com/2012/04/15/the-palantir-8/)
3. Yahoo! Account Help - What to do if your account is sending spam (http://help.yahoo.com/kb/index?locale=en_US&page=content&y=PROD_ACCT&id=SLN3417&impressions=false)