AsianFin -- A rapidly growing wave of cyberattacks exploiting a vulnerability in Microsoft Corp.’s SharePoint servers has compromised an estimated 400 organizations, up from around 60 just days ago, according to Dutch cybersecurity firm Eye Security.

The victims include government agencies, corporations, and other institutions, with the majority located in the U.S., followed by Mauritius, Jordan, South Africa, and the Netherlands. Among the affected is the U.S. National Nuclear Security Administration, which oversees the country’s nuclear weapons arsenal, Bloomberg previously reported.