Oracle Corporation (ORCL) shares plummeted 5.39% in Wednesday's trading session following reports of a second recent cybersecurity breach. The software giant informed clients that a hacker had infiltrated a computer system and stolen old client log-in credentials, according to Bloomberg News.

This marks the second cybersecurity incident Oracle has acknowledged to clients in the past month, raising concerns about the company's data security measures. The breach reportedly involved an unidentified person attempting to sell stolen data from Oracle's cloud servers online. The Federal Bureau of Investigation (FBI) and cybersecurity firm CrowdStrike Holdings are said to be investigating the incident.

Oracle has attempted to downplay the severity of the breach, stating that the compromised system has not been in use for eight years and that the stolen credentials pose little risk. However, the report suggests that the stolen data included Oracle customer log-in credentials from as recently as 2024, contradicting the company's assurances.

The repeated security breaches are likely to raise questions about Oracle's ability to protect sensitive client information, potentially impacting customer trust and future business prospects. As companies increasingly rely on cloud services and data security becomes paramount, such incidents could have significant implications for Oracle's market position in the competitive cloud computing industry.