Photo by Amelia Holowaty Krales / The Verge

Microsoft’s security and threat intelligence teams have reportedly caught an Austrian company selling spyware based on previously unknown Windows exploits.

The new details were released on Wednesday in a technical blog post from Microsoft’s Threat Intelligence Center (MSTIC), published to coincide with written testimony given by the software company to a House Intelligence Committee hearing on commercial spyware and cyber surveillance.

The spyware developer — officially named DSIRF but which Microsoft tracks under the codename KNOTWEED — made spyware known as Subzero that was used to target law firms, banks, and consultancy firms in the UK, Austria, and Panama, Microsoft said. Analysis from MSTIC found that exploits used by DSIRF to…

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