Over 100 private sector firms were breached in the SolarWinds attack, the White House has revealed. Anne Neuberger, deputy national security advisor for cyber and emerging technology, told the press yesterday that many of those affected were technology companies, “whose products could be used to launch additional intrusions.” That’s certainly what appears to have happened with the targeting of firms like FireEye, Microsoft, Malwarebytes, Mimecast and Palo Alto Networks — although not all of these attacks were successful.

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