573031 Contact Forms Needed and/or fixed

Avg Bid (USD)
Project Budget (USD)

Project Description:
We currently have 3 forms on our website but someone has been hacking into them somehow and through the form send us tons of junk mail. I need to make it so a "human" needs to fill it out, with entering from a scrambled text image they see or something like this. Basically need to make it so people cant send us junk through this form using programs, etc. Are current forms are PHP based I believe

Skills required:
Anything Goes, PHP, Web Security
About the employer:
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