Advisory: Security issue with 3CX desktop application

3CX, a company that supplies telephony solutions, has been affected by a supply chain attack affecting software downloaded from their website. This attack can affect users running the 3CX desktop clients for MacOS and Windows. The recommended action is to remove these clients and use the web or mobile clients for 3CX. We’ve detected some network traffic related to this issue and advised affected schools. See here for more details.