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What is Duo Security?

Cisco Duo is a cloud-based identity security solution that protects organizations from identity-based threats and boosts workforce productivity. Trusted by over 40,000 organizations worldwide, Duo delivers an exceptional access management experience across all users, devices, and applications, making access to resources secure, seamless, and easy. Duo with Cisco Identity Intelligence provides deep visibility across your identity ecosystem, adding a powerful security layer to any identity infrastructure. Offer users a world-class access experience through Duo Passport to eliminate MFA friction and fatigue without sacrificing security. To stop threats, Duo verifies user identities with strong authenticators including Duo passwordless, Verified Duo Push with number matching, and phishing-resistant factors like biometrics and FIDO2 security keys. Paired with deep insights into users’ devices, Duo gives you the control to adaptively limit access based on device health or user risk.

Who Uses Duo Security?

Duo provides identity-first security and access management that scales to any sized organization across every industry, from small and medium businesses to large enterprises and government agencies.

Duo Security Software - Admin Panel
Duo Security Software - Verified Duo Push
Duo Security Software - Cisco Identity Intelligence
Duo Security Software - SSO
Duo Security Software - Device Health Check

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Reviews of Duo Security

Average score

Overall
4.7
Ease of Use
4.6
Customer Service
4.4
Features
4.5
Value for Money
4.6

Reviews by company size (employees)

  • <50
  • 51-200
  • 201-1,000
  • >1,001
Paul Henry
Paul Henry
Systems Engineer in Philippines
Verified LinkedIn User
Information Technology & Services, 501–1,000 Employees
Used the Software for: 1+ year
Reviewer Source

Cisco Duo is more than 2-factor Authentication

5.0 8 months ago

Pros:

Duo not only provides 2-factor authentication but also provides security posture checking for a dynamic behaviour of an endpoint.

Cons:

Duo is purely cloud-based and does not have an on-premise setup.

Peter N
Cyber Security Engineer in Canada
Computer & Network Security, 11–50 Employees
Used the Software for: 1+ year
Reviewer Source

Work with the best and be the best, Duo Security is the hidden gem

5.0 3 weeks ago New

Comments: The experience was phenomenal and we can now sleep peacefully knowing that everything is safe.

Pros:

Identity is everything,protect it with Duo Security. Its the leading in class of security. Keep things easy for your users but tougher for intruders. Stay protected in a multi factor authentication. If any device tries to access your applications it gives you the chance to verify if it's trustworthy.

Cons:

Security is everything, I have nothing to say.

David
International Student Program Technician in US
Education Management, 51–200 Employees
Used the Software for: 1+ year
Reviewer Source

Duo Security is a bit of a double-edged sword

3.0 last year

Comments: Duo Security is necessary and useful when trying to protect your secure access to portals and data online. However, this company hasn't quite worked out the delays and programming bugs that still come with the app.

Pros:

Duo Security does resolve many issues with sensitive information and secure access, as the approved user is given sole access by having this app on the user's phone.

Cons:

There are numerous delays in alerts and sometimes it appears that programming bugs cause the app to malfunction, even when using the latest version of the app.

Tyrek
IT network security analyst in US
Mechanical or Industrial Engineering, 51–200 Employees
Used the Software for: 1+ year
Reviewer Source

DUO Security

5.0 2 weeks ago New

Pros:

The amount of visibility on user authentications and devices.

Cons:

Console can be a bit difficult to navigate through when looking at applications/policies.

Jonathan
Photographer in Trinidad & Tobago
Photography, Self Employed
Used the Software for: 1+ year
Reviewer Source

J.L. Duo Security Review

4.0 2 years ago

Comments: Duo Security was the second-in-line when it came to authentication and data security for protecting my device's applications but really fell short when it came to the execution of its actual functionality when the time came. So, within the time period of installing and using the software, I soon uninstalled it in search of another software to satisfy my needs with less complications.

Pros:

Duo Security's simplistic design format makes any user, including myself, notice any and every possible feature available and if unsure, can contact their support team who replies in a very short span of time.

Cons:

There were times in the past where I would use Duo Security as a two-factor authentication system to login my Instagram account. However, on those times the code that would refresh every 30 seconds was always deemed incorrect. And so I would have to disable the software's functionality and risk my account security to simply login to Instagram.

Ian
Prevent Manager in US
Information Technology & Services, 11–50 Employees
Used the Software for: 2+ years
Reviewer Source

Alternatives Considered:

Outstanding MFA Security

5.0 2 years ago

Comments: Our users and administrators have both given positive feedback with using Duo. I would recommend to organizations looking to have reliable and secure logins.

Pros:

Multifactor authentication has been effective at making users have to sign in securely to our networks. Duo admin console is easy for our techs to learn and user setup takes a few minutes to complete. The device and user management for sign-ins allows us to manage the authentication more effectively.

Cons:

We have experienced the admin console inaccessible at times when there have been updates or outages. The timer for accepting pushes doesn't always sync up correctly.

David
IS Security Engineer in US
Medical Practice, 1,001–5,000 Employees
Used the Software for: 1+ year
Reviewer Source

Duo Security is expensive but provides high quality and speedy results

5.0 2 weeks ago New

Comments: If money was not an issue, I would choose Duo Security for our organization's MFA/2FA security solution. It is backed by Cisco and their wide array of security products.

Pros:

Duo Security will enable your organization to add MFA/2FA into your authentication process. Duo Security has a clean interface, and I was able to easily navigate the various pages. It has a nice app for mobile phones, both Apple iOS and Android. It can produce reports for compliance inquiries.

Cons:

Duo Security is an expensive product because it is designed for enterprise installations of several thousand users who need an easy integration with the highest levels of security.

Diwakar Dixit
IT Manager in US
Information Technology & Services, 10,000+ Employees
Used the Software for: 2+ years
Reviewer Source

A security tool which you can rely for MFA

4.0 2 months ago New

Comments: We were asked to implement MFA for cisco anyconnect and we found DUO could do this job as cisco did not have their own solution for MFA. Implementation took less than a day and it was super easy to use. License cost is also cheap. It supports Push notification, sms and even phone call. Support is very awesome as they respond quickly.

Pros:

Nice UI Easy to integrate with security products like cisco ASA Very cheap to implement if your organisation is looking for MFA Supports SAML Supports Radius

Cons:

I have not found any cons as such as the implementation was for MFA and it worked like a charm.

Mackenzie
Student in US
Education Management, Self Employed
Used the Software for: 1+ year
Reviewer Source

Duo Mobile Review

5.0 3 weeks ago New

Comments: I enjoy using Duo Security everytime rather than using email confirmation

Pros:

It is quick to use and pops up even on my watch

Cons:

That I have to do it every time I log in, but no fault of the company

Stoyan
Service engineer in Bulgaria
Computer & Network Security, 51–200 Employees
Used the Software for: 2+ years
Reviewer Source

The most trusted identity security tools.

5.0 3 months ago

Comments: Cisco Duo Security provides a seamless experience for working remotely in a secured environment. It gets integrated with the mobile phone easily to get a new passcode every time I login.

Pros:

Easy integration with mobile phones. Multifactor authentication. Single sign on functionality. Takes no time for authentication.

Cons:

After several years of use, I do not find any weaknesses in the application.

Gordon
Software Developer in Kenya
Banking, 201–500 Employees
Used the Software for: 2+ years
Reviewer Source

A well known muti-factor aunthentication Solution

5.0 2 years ago

Comments: Overall, Duo Security is one of those mandatory have solutions. In the world of today where security is a big concern, multi-factor authentication is essential.

Pros:

We use Duo Security to login to almost all our cloud infrastructure platforms. It is simple and minimum set up is required for someone to get set up and start using. It provides a variety of authentication methods like one-time passwords, push notifications, SMS etc. My favourite authentication method is the approval methods by the mobile phone app. The way it works is that once you input your username and password, a prompt is then sent to your phone with two options, either approve or deny. It is only after selecting Approve that you are signed in. I like this method because it is the easiest to use of all the multi-factor authentication methods available for Duo Security. Another advantage of Duo Security is that it works with quite a number of platforms ranging from desktop services, cloud services and VPNs.Duo Security offers insightful analytics which helps you track the security of your platforms. Login attempts can be monitored, and potential security threats eliminated before they can cause any harm.

Cons:

Duo Security is very much connectivity and mobile device dependent. This may not be accessible to everyone at any given time. Another limitation of Duo Security is that the mobile application is only accessible through certain phones with a certain a specific android version for Android Mobile Users. There is this one time when the application failed to install in one of my colleagues phone. They had to use their wife's phone for multi-factor authentication whenever they needed to login to a specific remote desktop.

Alex
Coach customer Service in Panama
Banking, 201–500 Employees
Used the Software for: 2+ years
Reviewer Source

Important to have.

5.0 2 years ago

Comments: Has been an excellent and smooth experience for me, it is easy to use and it gives me peace knowing that if someone wanted to use my credential i will be notify.

Pros:

Mobile authentication is great, the pop up screen that just require accept once you are login in to the VPN is very efficient and easy to use.

Cons:

When changing mobile device or phone number associated to the DUO it can be a nightmare doing the self service steps for people that are not computer savvy, within the organization has colleagues that do it very fast and some of them that hard to understand and follow the steps.

Alex
Systems Engineer in UK
Education Management, 51–200 Employees
Used the Software for: 1+ year
Reviewer Source

Essential additional layer of network protection

5.0 last year

Pros:

Provides an additional layer of security when logging into servers, firewalls, switches etc when offline MFA security or local administrator accounts. If the internet is detected a simple notification to Approve/Disapprove is set out to the mobile app. If the internet is offline you can use rolling codes to still login whilst maintaining essential security.

Cons:

The administrative interface can be still confusing when setting up Users and Groups and often links are hidden away in large sections of text. Try setting up RDP and locating the Duo EXE and you'll know what I mean

Nicole
Nurse Practitioner in US
Hospital & Health Care, 10,000+ Employees
Used the Software for: 1+ year
Reviewer Source

Great program for security

5.0 last year

Comments: Overall great. Easy to use. Quick verification. Like the test or call option.

Pros:

Easy to use. Love the access to this on my phone. Provides great security measures to avoid unauthorized log in.

Cons:

Requires multiple log in pushes when changed from different applications within the same program. One verification per program would be nice.

Leila
Research Scientist in US
Research, 51–200 Employees
Used the Software for: 2+ years
Reviewer Source

A must have for security

5.0 last year

Comments: Overall, using Duo helps to be sure that no one can access to my accounts and helps reduce the stress and insecurity.

Pros:

Using Duo security gives me the ease of mind that no one can try to hack my email and data . I know that using this, if someone tries to abuse the information and log in to my accounts, I will immediately notified.

Cons:

One of the problems is that sometimes, even with choosing the remember for 30 days option, I have to enter the passcode on my phone every time that I want to enter to my accounts.

Ashley
Social Worker in US
Hospital & Health Care, 201–500 Employees
Used the Software for: 2+ years
Reviewer Source

Security made easy!

5.0 last year

Pros:

It's an app that I have on my phone and so easy to use. I use it for work when I have to work remote at home. Whatever I am trying to get into as far as work accounts, its trigger's my duo app to make sure I am the actual user. All I have to do is hit accept in the duo app and I am logged into whatever work feature I am trying to use remotely. It's safe and protects confidentially.

Cons:

The only thing I forget is that if you get a new phone, you have to re download the app and re-register your duo account with your IT department at work. It's easy to do, but It's not something I think of until I try getting in and can't.

Anonymous reviewer
Consumer Goods, 201–500 Employees
Used the Software for: 1+ year
Reviewer Source

Duo 2FA Daily Use

5.0 last year

Comments: Duo has made it simple to login everyday as 2FA and single sign on

Pros:

You can easily approve your Two Factor Authentication right from the notification or open the app to approve. Can have multiple Duo programs under the same app.

Cons:

Should allow a login for easy installation on a new phone or tablet. Currently limited to only having on one device for approval

Jose
Product Operations Manager in Spain
Telecommunications, 1,001–5,000 Employees
Used the Software for: 2+ years
Reviewer Source

Authentication using DUO PUSH

4.0 2 years ago

Comments: Working for several years. Easy to use and no disruptions in the service.

Pros:

Very wasy to use. No much more to say, it´s simple and works very well. It can be integrated with lot of apps.

Cons:

Sometimes using WIFI networks take some seconds to receive push. I have 1GB optic fiber, don´t think so itcould be due WIFI. Perhaps it´s the handset WIFI module. When I use with mobile data connection it is immediate.

Paulette
Physical Therapist in US
Medical Practice, 2–10 Employees
Used the Software for: 2+ years
Reviewer Source

Highly recommend for remote authorization usage

5.0 2 years ago

Pros:

I love how easy this system is to use either remotely through a computer or a phone. I never had trouble accessing my patient charts when outside of the hospital. It was a very reliable system.

Cons:

I did not have any issues with the duo security system

Jaroslaw
Software Engineer in Ireland
Renewables & Environment, 201–500 Employees
Used the Software for: 6-12 months
Reviewer Source

Convenient tool for access control

4.0 2 years ago

Comments: Overall, I am satisfied with this application, mainly due to its simplicity, fairly good reliability and extensive integration possibilities with other tools.

Pros:

An easy-to-configure two-factor authentication tool with a simple and clear interface. It can be integrated into an existing environment regardless of platform or OS. It also has logging and monitoring functions.

Cons:

Sometimes I don't get push messages or I get two at once, which sometimes takes a long time and can be frustrating when you need to access resources quickly.

Chris
Systems Engineer in US
Information Technology & Services, 51–200 Employees
Used the Software for: 1+ year
Reviewer Source

Good product for MFA in various areas

4.0 last year

Pros:

Being able to use this for MFA on servers/computers is awesome

Cons:

Sometimes it doesn’t send the code like it should. However, thats just how tech is.

Hollie
Admin Clerk III in US
Hospital & Health Care, 201–500 Employees
Used the Software for: 6-12 months
Reviewer Source

Duo Security Review

4.0 2 years ago

Comments: I use DUO to sign in securely into my work computer. I haven't had any issues and I'm able to add as many computers and devices on there as I want.

Pros:

I like how quick my computer is able to communicate with the app on my smart phone in order to log me into my computer quickly and safely.

Cons:

It took some knowledge from my IT team in order for me to use the app properly. So some training is needed and it would be nice for a have quick help guide.

Verified Reviewer
Verified LinkedIn User
Apparel & Fashion, Self Employed
Used the Software for: 1-5 months
Reviewer Source

"Streamline Your Security with Duo: The Ultimate Solution for Easy and Effective Protection"

5.0 2 years ago

Pros:

Duo Security is a popular vendor that offers a cloud-based multifactor authentication (MFA) solution, which provides many benefits, such as:1. Strong Authentication: Duo Security provides strong authentication to secure access to your applications, devices, and data. Its MFA solution helps to ensure that only authorized users can access sensitive information, preventing unauthorized access.2. Easy Integration: Duo Security can easily integrate with a variety of applications, such as VPNs, cloud applications, and on-premise solutions. This makes it easy to add an extra layer of security to your existing IT infrastructure.3. User-Friendly: Duo Security is user-friendly and easy to use. It offers a range of authentication methods, including push notifications, SMS, phone call, and biometrics, making it convenient for users to access their accounts.4. Comprehensive Dashboard: Duo Security offers a comprehensive dashboard that allows you to monitor and manage authentication events, track device compliance, and gain insights into your security posture.5. Security Features: Duo Security offers several security features, such as device visibility and control, policy enforcement, and adaptive access policies. These features help to ensure that your organization's security policies are enforced, and only authorized users can access sensitive information.

Cons:

Some potential cons of Duo Security may include:1. Cost: Some users may find the cost of Duo Security to be higher than other security solutions in the market.2. Integration: While Duo Security integrates with many applications and platforms, some users may experience difficulties in integrating with specific systems or may require additional configuration to work effectively.3. User Interface: Some users may find the Duo Security user interface to be confusing or not as intuitive as other security solutions they have used in the past.4. Customer Support: Some users have reported experiencing slow response times or limited support options from Duo Security's customer support team.

Vignesh
Vignesh
Senior Process Associate in India
Verified LinkedIn User
Computer Software, 10,000+ Employees
Used the Software for: 1+ year
Reviewer Source

Duo Security Review

4.0 2 years ago

Pros:

Duo Security is very user-friendly, and it is used for authentication. It is easy to install and use. We have login either through password or push

Cons:

Sometimes push will not work properly, and the password will not work if we take more time

Santhiya
Santhiya
Executive hub operations in India
Verified LinkedIn User
Warehousing, 1,001–5,000 Employees
Used the Software for: 1+ year
Reviewer Source

Duo Security Review

4.0 2 years ago

Pros:

Duo Security Is user-friendly and easy to install and integrate for authentication.

Cons:

Sometimes push will not work, and we have need to enter the password again if we do not use this for a long time