for security purpose

[Sweetpumpkin]

Hello,

When you say a phrase "for security purpose", do you have to put "-s" in the end of purpose?

1) for security purpose
2) for security purposes
3) both are acceptable

What do you think? I googled, and there are many results by searching "for security purpose". I think it's grammatically wrong and it needs an article. But, is it acceptable to say "for security purpose"?

Thank you in advance,
sweetpumpkin

[Mister Micawber]

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Only #2. If you want the singular: 'for the purpose of security'. Beware Madame Google; she is sometimes wayward.
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Native English teacher at Mister Micawber's