Crypto exchange Coinbase has said that it prevented little over 1,100 customers from sending bitcoin to Twitter hackers who hijacked high-profile accounts to advertise a bitcoin scam last week.

If Coinbase didn't take the step, these customers would have collectively sent 30.4 bitcoin (currently worth about $278,000) to hackers, the exchange's chief information security officer, Philip Martin, told Forbes. Notably, this amount is more than twice the actual amount ($121,000) that hackers collected via victims.

Despite Coinbase's action, its 14 customers still fell prey to the scam and sent around $3,000 worth of bitcoin to hackers before the exchange blacklisted their addresses, said Martin.

Gemini, Kraken, and Binance users also tried sending bitcoins to the addresses, but not as …