Scammers stole $100 million in bitcoin from Binance, the world's largest cryptocurrency exchange, the company claimed on Friday.

On Twitter, company CEO Changpeng Zhao stated that "an exploit" in the system resulted in increased creation of the exchange's specialized currency, adding, "The current effect estimate is over $100m."

"The problem has been resolved. Your money is secure. "We apologize for the inconvenience and will give more updates as needed," he stated.

It is one of the largest cryptocurrency robberies in history, however it pales in comparison to the massive robbery of more than $500 million from the Axie Infinity blockchain game earlier this year.

Scammers are increasingly exploiting flaws in "cross-chain bridges," which allow investors to transfer funds from one blockchain to another.

Blockchains are digital ledgers that contain transaction information – the most famous is bitcoin, but there are many of others.

Changpeng Zhao said that the theft was the result of "an exploit on a cross-chain bridge, BSC Token Hub," assuring clients that it had been resolved.

According to the Reddit conversation, the sum taken was between $100 and $110 million, with $7 million already returned.

The Axie Infinity theft and another robbery of over $200 million on crypto company Nomad last month both involved bridges being hacked.

Bridge attacks, according to Chainalysis, a crypto research outfit, have already responsible for about $2 billion in thefts this year.

In its latest crime report, Elliptic stated that bridges "tend to gather enormous sums of locked assets on several blockchains, many of which may not have sophisticated security or auditing cultures owing to their relative obscurity."

"In the past, this has made bridges an appealing target for hackers," it continued.