Received this message supposedly from www.walmart.com.wonacontest.com saying that I was today winner and had 24 hours to claim.I received it on my cel phone.Is it  a prank?

Do you have good security on your computer? You should! Any web address of a big company that has extentions AFTER the .com, .org, .net should be treated as trouble! If you were to go to Walmart.com is there any information on the REAL site about free gifts? Nope! If you phone them about this they'll tell you it's a scam. Always do your homework FIRST!

I got this text

Congratulations, your number made you Walmart's winner of the day. Goto http://www.walmart.com.wonacontest.com to claim your prize! You have 24 hours to claim.

It is a scam, it has been reported many times on many sites. I am going to contact the wonacontest websites host, tell them to take the site down as its spam and a scam.