By Raphael Satter

WASHINGTON (Reuters) -Oracle said on Thursday that customers of its E-Business Suite of products “have received extortion emails,” confirming a warning first issued on Wednesday by Alphabet’s Google.

In a blog post, the California-based tech company said its investigation found that hackers had made potential use of previously identified software vulnerabilities and urged customers to upgrade their products. Oracle did not immediately respond when asked how many clients were affected. Google has described the hacking campaign as “high volume,” but declined to go into detail.

Cynthia Kaiser, the head of cybersecurity firm Halcyon’s Ransomware Research Center, previously told Reuters that her company had seen extortion demands ranging from millions to tens of millions of

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