Google’s cybersecurity unit Mandiant said hacking group ShinyHunters has resumed exploiting a vulnerability in Oracle’s PeopleSoft enterprise software after bypassing defenses introduced following attacks from May 27 through June 9. Those earlier attacks mainly affected universities. The latest campaign targeted organizations that had implemented web application firewall rules but had not installed Oracle’s patch, affecting dozens of systems across higher education, technology, healthcare, agriculture, transportation and government. The disclosure came days after ShinyHunters claimed it had stolen FBI personnel data, though Reuters could not corroborate that claim. The Federal Bureau of Investigation said Wednesday it was aggressively investigating the reported breach. Reuters previously reported that ShinyHunters exposed names of personnel in sensitive FBI units and obtained medical and psychiatric records. Oracle did not respond to requests for comment.