America’s most-wanted leaker has a backup plan.

If anything happens to Edward Snowden, a massive trove of top-secret data will be released to the world — which could hurt US intelligence, sources said.

NSA leaker Snowden — who is wanted on espionage charges — has the data backed up and stored in a vault or safe, the sources told the Sunday Times of London.

Snowden is believed to have left his laptops in Hong Kong, and has been hiding from law enforcement in a Moscow airport.

The confidential files, downloaded from NSA computers, are being held as an “insurance policy”— and if released, they could be devastating to US intelligence agencies.

The journalist to whom Snowden leaked the documents said the former NSA contractor confirmed that the files were in good hands.

“[Snowden] has taken extreme precautions to make sure many different people around the world have these archives to insure the stories will inevitably be published,” Guardian reporter Glenn Greenwald told the Daily Beast.

“If anything happens at all to Edward Snowden, he told me he has arranged for them to get access to the full archive.”

Snowden has warned authorities that he can’t be silenced.

“All I can say right now is the US government is not going to be able to cover this up by jailing or murdering me,” Snowden said on June 17. “The truth is coming, and it cannot be stopped.”

Snowden has been trying to flee to Ecuador.

But Vice President Joe Biden asked that country’s leader to turn down the request, it was revealed yesterday.

“The moment that he arrives, if he arrives, the first thing is we’ll ask the opinion of the United States, as we did in the [Wikileaks founder Julian] Assange case with England,” President Rafael Correa said. “But the decision is ours to make.”

He had flown there when he got kicked out of Hong Kong, where he had hoped to stay.

Lawyers met Snowden at a Hong Kong safe house on June 18, where the paranoid former NSA contractor made his guests store their phones in the fridge to avoid surveillance.

Snowden’s first port of call after fleeing the United States was Hong Kong.

When he learned that he could be detained as the United States sought extradition, he asked his lawyer, Albert Ho, to learn whether he could leave Hong Kong.

He was able to slip out of the country because bone-headed bureaucrats bungled his arrest papers.

Chinese authorities told him they would let him leave — but he had to do so immediately.

That led Snowden to Russia, where he has been stuck in a transit area of the Moscow airport, where authorities can’t touch him.