How to protect yourself from Meltdown and Spectre

protect home network

This practical how-to guide describes the simple steps you can take today to protect yourself from the Meltdown and Spectre attacks affecting nearly every modern central processing unit (CPU) released by Intel since 1995.

The good news is there are patches available today for most of the affected Intel, AMD and ARM CPU-based devices that you can install right now.

Additional security updates are expected in the coming days, weeks and even months and I will update this post with that information as it becomes available.


Update Firefox

  1. Download and install Firefox Quantum 54.0.7:


Apple released mitigations in iOS 11.2, macOS 10.13.2, and tvOS 11.2 in early December 2017 to help defend against Meltdown.

In the coming days we plan to release mitigations in Safari to help defend against Spectre. We continue to develop and test further mitigations for these issues and will release them in upcoming updates of iOS, macOS, and tvOS.

Update Apple Safari

  1. Safari 11.0.2: Apple menu () > App Store: Updates – Install

Update iOS iPhones and iPads

  1. Settings > General > Software Update to download latest version
  2. Settings > General > About to confirm you have 11.2 or later.

Update Macs, TV and Watches

  1. MacOS 10.13.2: Apple menu () > App Store: Updates – Install
  2. tvOS 11.2: Settings > System > Software Updates: Update Software
  3. watchOS 11.2: on phone linked to watch open the My Watch app > General > Software Update

“Apple Watch is not affected by either Meltdown or Spectre.”

– Apple


Update Google Chrome

  1. Open Google Chrome and paste chrome://settings/help in the address bar
  2. Verify Version is installed
  3. Enable Automated updates
  4. Paste chrome://flags/#enable-site-per-process in the address bar
  5. Enable Strict Site Isolation and click Relaunch Now

 See my previous post for additional information about these changes

Update ChromeOS

Chromebooks with non-ARM CPUs have a mitigation as of Chrome OS version 63, which started rolling out in mid-December. Here’s how to update your ChromeOS:

  1. Turn on your Chromebook.
  2. Connect your Chromebook to Wi-Fi.
  3. Click your account photo.
  4. Click Settings Settings.
  5. Click Menu Menu and then About Chrome OS.
  6. Under “Google Chrome OS,” click Check for Updates.
  7. If your Chromebook finds a software update, it will start to download automatically.
  8. Verify you have at least version 63 installed under About Chrome OS

Chromebooks with ARM CPUs are not affected by Meltdown or Spectre. Here’s a list of Chrome OS devices affected by Meltdown:

Update Android Phones

Google branded phones like Nexus 5X, Nexus 6P, Pixel and Pixel2 should auto download system updates that you can install.

  1. Settings > System Updates > Check (for updates): Download or Yes to install available update

Other Android manufacturers and cellular carriers may take longer – if you don’t see an update posted in the next 24-48 hours you should probably start squawking on your favorite social network.

Update Home, Chromecast, WiFi, OnHub, Gmail, Apps and Services

Google has stated none of their other consumer-facing products are affected by these vulnerabilities but stay tuned as this situation is fluid.

Microsoft OS

Delta and Cumulative updates for Windows 10 and Windows Server 2016 are available now. Other Windows versions are expected to have a patch on the normal Patch Tuesday release schedule January 9th, 2018.

Update Microsoft Edge, Internet Explorer

  1. Run Windows Update (or download directly from Update Catalog)

Update Windows

  1. Run Windows Update (or download directly from Update Catalog)


  1. Sike dudebro…totally donkbuckets.

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