Coinbase (COIN +1.4%) stock pares its gain after the cryptocurrency exchange said that hackers stole from the accounts of at least 6,000 of its customers, according to a letter posted on the California Attorney General's website. In the letter to the affected customers, Coinbase (NASDAQ:COIN) said it will deposit funds into "your account equal to the value of the currency improperly removed from your account at the time of the incident." The incident occurred between March and May of this year, it said. The company also said it's working closely with law enforcement in an investigation into those behind the incident. Its own internal investigation is also continuing. The hackers needed email addresses, passwords and phone numbers associated with the Coinbase accounts to access the accounts. This type of hacking usually involves phishing attacks, Coinbase (COIN) said. "We have not found any evidence that these third parties obtained this information
