Protect the Petition system petitions.whitehouse.gov from fraud as it happens with petition 'Alaska back to Russia.'.

In newscast of one of the russian news channel the petition 'Alaska back to Russia' was mentioned.
See http://bit.ly/1h9PjnH
At this moment this petition has more than 27000 of votes. I assume that this petition was created and promotes by russian politicians.
I assume this because your system is not protected from such a fraud.
I decided to verify this assumption and succeeded.
For instance, I am russian citizen but I successfully voted for that petition. Even more, as you read this petition you must realize that I am able to create new petitions too.
I propose to vote for this petition to protect the Petitioning System from manipulations and fraud. This initiative will protect your interests and will prevent manipulation of public opinion in Russia too.