I am put in place to protect, though I am only effective when we connect. What a!

Question: I am put in place to protect, though I am only effective when we connect!. What am I!?

What is the answer to this riddle!?Www@Enter-QA@Com

Answers:

Its a Scam!! Don't Waste your money!Www@Enter-QA@Com

internet security
firewall
anti-virusWww@Enter-QA@Com

Sounds like a condom to meWww@Enter-QA@Com

Fencing or fence postsWww@Enter-QA@Com

A chain!?Www@Enter-QA@Com

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