IMPORTANT: Web Blocking / RAM Usage

Earlier this morning, we published a protection update that caused connection issues for many of our customers. As a side effect of the web protection blocks, the product also spiked memory usage and possibly caused a crash.

We have triaged this issue and pushed a protection update that resolves it:

  1. Disable Web Protection
  2. Update to 3803
  3. Reboot

The root cause of the issue was a malformed protection update that the client couldn’t process correctly. We have pushed upwards of 20,000 of these protection updates routinely. We test every single one before it goes out. We pride ourselves on the safety and accuracy of our detection engines. To say we are heartbroken is an understatement.

We are working hard to not only triage your issues and get your computer or business back up and running but to also rebuild your trust.

If the above doesn’t resolve the issue, please reach out to support at


*** This is a Security Bloggers Network syndicated blog from Malwarebytes Labs authored by Ken Liao. Read the original post at: