Cloud Security

Protect users, data, and applications, anywhere they are.

WannaCry Ransomware Attack

WannaCry Ransomware Attack

Get the latest on strengthening your defenses.

Learn more

OAuth attacks: What you need to know

What is OAuth?

What is OAuth?

Wrap your head around the recent OAuth attack, the growing risk, and what can be done.

On-demand webinar

On-demand webinar

Listen to Cisco experts discuss the latest attacks and how you can protect yourself.

How apps increase risk

How apps increase risk

Our video explains why OAuth-connected apps are the shadow IT that matters more than others.


Cisco Cloud Security helps you adopt the cloud securely. With it, you can better manage security for the way the world works today. It protects users against threats anywhere they access the Internet, and it protects your data and applications in the cloud.


Block threats earlier

Stop malware before it reaches your network or endpoints. Reduce the time spent remediating infections.


Extend protection

Remove blind spots. Protect users anywhere they go, anywhere they access the Internet.


Secure users, data, apps

Protect users, data, and apps in the cloud against compromised accounts, malware, and data breaches. Enable compliance.


Enable secure cloud use

Improve security with no impact on end-user productivity.

I need to…


Protect users anywhere they go

Cisco Umbrella provides the first line of defense against threats on the Internet, wherever users go.


Secure users, data, and applications in the cloud

Cisco Cloudlock, a cloud access security broker, protects against compromised accounts, data breaches, and malware.

Related products


Cisco Cloud Email Security

Defend against advanced email threats and protect sensitive data.


Cisco Stealthwatch Cloud License

Extend network visibility to your cloud environments.


Cisco Next-Generation Firewall

Stop threats with an integrated, threat-centric firewall.

A hospital uses Umbrella to fight ransomware


"Deploying Umbrella was fast and we experienced immediate time to value. Within an hour of Umbrella going live, we could see a huge increase in visibility, protection, and blocked malicious traffic."

Henry Duong, Security Manager, University of Kansas Hospital

See how it works

Read the full story

Gaining visibility and security with Cisco Cloudlock


"The biggest benefit Cloudlock provides for us is visibility into what users are doing; what they are storing up in the cloud, and being able to keep ourselves out of hot water, to be honest. We don't want news channel moments, and without Cloudlock we would not have had nearly as good of view into what is out there and how to take action on it."

David Duchan, Information Security Engineer, Ahold

Watch video

Video spotlight

Monthly Umbrella update

Monthly Umbrella update

Check out what's new with Cisco Umbrella this month. (5:44 min)

News and events

Gartner Market Guide for CASB

Gartner market guide for CASB

Understand the cloud access security broker (CASB) market with this Gartner research.

Security's new frontier: The cloud

Security's new frontier: The Cloud

Learn how Cisco Cloud Security helps you securely adopt and use the cloud.

Cyber attacks continue to evolve - have you?

Cyber attacks continue to evolve - have you?

Learn how attackers are monitoring your organization for weaknesses.

New dog, new tricks.

Meet Cisco Umbrella—the industry's first secure Internet gateway in the cloud.

Learn more

Improve results with our services

Cisco Services help customers integrate a breadth of Cisco technology, migrate from other solutions, and optimize their existing security technologies.

For partners

Are you a Cisco partner?  Log in to see additional resources.

Looking for a solution from a Cisco partner? Connect with our partner ecosystem.

View all security partner resources