Update 7 Windows Electron App build number 18.12.424 has been checked by our advisors Mandiant who found no evidence of compromise. Due to certificate changes, we had to update the naming convention. We re-opened the build to address this. Build 18.12.425 has been created and released. Below is our most up to date information.

Still Preferred Option: Install 3CX as a Native Web App (PWA)

Installing 3CX as a native app (PWA) is still our preferred and recommended option. To summarise:

  • There’s no need to be logged into 3CX with a tab open
  • When a call or chat comes in you’ll be notified with a PUSH notification
  • Depending upon your browser, this is what you can expect:
    • Microsoft Edge, your browser will be auto started
    • Google Chrome, your browser will NOT be auto started if closed
  • Safe and practical use it together with iOS and Android apps or deskphone to control calls on your smartphone or deskphone

Setting the App to Auto Start

To ensure zero admin, along with automatic updates and secure running within the browser, we recommend auto starting your browser on system startup. Read the instructions on how to set the app to auto start.

How to Download Windows & Mac Electron

Ensure Your Server Has the Latest Update Installed

Important! First, ensure your server has the latest update installed. Details about this and the steps, if any, that you need to take are shown below.

Customers on 3CX Hosted / StartUP - No action needed

3CX Hosted and StartUP users do not need to update their servers as we will be updating them automatically today. Servers will be restarted and the new Electron App MSI/DMG will be installed on the server. We still recommend that you use the PWA App.

Self-Hosted and On-Premise - Install update

For Self-Hosted and On-Premise follow these steps to download and run against your antivirus.

  1. Launch Management Console
  2. Go to Updates
  3. Download Mac Electron Desktop App - 18.12.425
  4. Download Windows Desktop App - 18.12.425

View the complete changelog here.

How Do I Get the Latest Developments?

3CX remains committed to strengthening our policies, practices, and technology to further protect against future attacks. To keep up with the latest developments:

  1. Subscribe to 3CX’s RSS feed. This blog is where we will provide all our updates on this ongoing investigation.
  2. Dedicated Support Forum & 3 Free Support Tickets - To answer as many questions as possible we’ve set up a dedicated help forum including 3 support tickets for all users.
    1. Log into your 3CX portal account.
    2. Click the "More" menu top right.
    3. Select "Support".
    4. Click "Create ticket".
    5. Select the instance you want to ask a question about.
    6. Enter support question - You will receive an auto-reply confirmation email which will be followed up with a response.
  3. Follow us on Social Media - For the latest updates please follow us on our social media channels. Alerts will be posted on Twitter and LinkedIn alerting to blog updates.