Prominent investor Mark Cuban has claimed that his Gmail account was hacked following a hoax call that resulted in him losing access to his email. Cuban reports that the malicious activity began when he received a call from someone pretending to be a Google employee, who alerted him to suspicious activity on his account. In light of the security breach, he warned his 8.8 million followers that any emails from his account after mid-afternoon on June 22 are not legitimate.

This incident has sparked widespread concern and speculation about the number of emails Cuban might have missed while his account was inaccessible. Kraken crypto exchange’s CSO, Nick Percoco, suggested the total could be in the thousands. Additionally, there are worries about the potential compromise of Cuban's other accounts, as noted by a user named "Mickamious."

This is not the first significant digital security issue Cuban has faced. Nine months earlier, Cuban's digital wallet, containing approximately $870,000 worth of cryptocurrency, was hacked after he activated MetaMask, a service he hadn't used in five months. The breach was first detected by independent blockchain investigator Wazz due to irregularities in Cuban's wallet.

Despite these setbacks, Cuban continues to advocate for cryptocurrencies and regularly lobbies for better regulations in the U.S. His latest efforts were directed at the U.S. Commodity Futures Trading Commission (CFTC), urging it to oversee "all crypto" instead of the SEC, as he believes the CFTC has a more enforcement-focused approach to the crypto sector.