The foreign secretary made the comments to the BBC's Andrew Marr show on Sunday after reports suggested that Russian Federation could launch cyber attacks on infrastructure in the UK in response to the air strikes carried out by UK, US and French forces against the Moscow-backed Syrian regime.
"There's one overwhelming reason why this was the right thing to do and that is to deter the use of chemical weapons, not just by the Assad regime but around the world".
"We are standing up for principle and for civilised values".
"If even such a thing [a chemical attack] were to happen, then clearly, with allies, we would study what the options were", he added.
He also did not rule out further attacks against Syria if the Assad regime continued the alleged use of chemical weapons.
"Finally the world has said enough is enough", he said.
Moscow has condemned the strikes as "demonstrating a blatant disregard for worldwide law", and accused the United Kingdom and its allies of "insulting" President Vladimir Putin.
It comes amid fears that Russian Federation may be preparing for revenge in the form of cyber attacks, which could see embarrassing information on Government ministers, known in intelligence circles as.
"Let me be absolutely clear: we have acted because it is in our national interest to do so".
"We know that they do have that ability to penetrate at that scale".
Addressing the Commons, Mrs May will set out her justifications for the decision - arguing it was taken on humanitarian grounds.
"The UK is permitted under global law, on an exceptional basis, to take measures in order to alleviate overwhelming humanitarian suffering", Number 10 said.
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