Mark Zuckerberg: Why is Facebook still using Kaspersky Lab?

[PatSeg]

8. From Facebook June 2015

"Protecting millions from malware with cleanup tools

Keeping links to malware off of our platform is a core function of our Security team. To really stick it to the fraudsters, we go beyond one-off, 'whack-a-mole' removals to systematically combat malicious activity and do away with whole clusters of bad links at a time. This strategy works well, but to make an even greater impact, we begin a few steps earlier and help fix compromised computers when they connect to Facebook. We use a combination of signals to help find infections and get the malware off of your computer for good, even if the malware isn't actively spreading spam or harmful links.

For the past year, we've been working with anti-malware companies like ESET, F-Secure, and Trend Micro to offer free malware cleanup software to people who use Facebook. Thanks to the collaboration with these companies, in the past three months we have helped clean up more than 2 million people's computers that we detected were infected with malware when they connected to Facebook. In these cases, we present a cleanup tool that runs in the background while you continue using Facebook, and you get a notification when the scan is done to show you what it found.

To make this program even more effective, Kaspersky Lab is bringing their expertise to our malware cleanup efforts. If we detect malware on your computer, we will offer Kaspersky Malware Scan for Facebook among our other cleanup tools to help take care of the problem. That means that another leading anti-malware company is helping you keep your computer safe and secure, just by using Facebook. And in the past three months, Kaspersky Lab helped us protect more than 260,000 people accessing Facebook from malware."

https://www.facebook.com/notes/facebook-security/protecting-millions-from-malware-with-cleanup-tools/10152836024620766/

This has happened to a lot of people and Facebook proudly brags about using Kaspersky malware scanner.