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Proofpoint Cloud App Security Broker vs Zscaler Private Access (ZPA) comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

iboss
Sponsored
Ranking in Cloud Access Security Brokers (CASB)
7th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
19
Ranking in other categories
Secure Web Gateways (SWG) (5th), Internet Security (3rd), Web Content Filtering (1st), ZTNA as a Service (7th), Secure Access Service Edge (SASE) (8th)
Proofpoint Cloud App Securi...
Ranking in Cloud Access Security Brokers (CASB)
20th
Average Rating
8.0
Reviews Sentiment
7.3
Number of Reviews
4
Ranking in other categories
No ranking in other categories
Zscaler Private Access (ZPA)
Ranking in Cloud Access Security Brokers (CASB)
8th
Average Rating
9.0
Reviews Sentiment
6.9
Number of Reviews
13
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Cloud Access Security Brokers (CASB) category, the mindshare of iboss is 2.5%, up from 1.7% compared to the previous year. The mindshare of Proofpoint Cloud App Security Broker is 0.8%, up from 0.6% compared to the previous year. The mindshare of Zscaler Private Access (ZPA) is 1.8%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Access Security Brokers (CASB) Market Share Distribution
ProductMarket Share (%)
iboss2.5%
Zscaler Private Access (ZPA)1.8%
Proofpoint Cloud App Security Broker0.8%
Other94.9%
Cloud Access Security Brokers (CASB)
 

Featured Reviews

reviewer2701851 - PeerSpot reviewer
Managing Director
Enhances web security with a single pane of glass and flexible deployment
I don't see any need for improvement; one of the really good things about iboss as a company is that they listen to customer feedback. I have suggested enhancements, and they are responsive, making changes for the better, and they do a lot of testing. To improve iboss, although we haven't used it, we considered the VPN solution that comes with the highest tier licensing, which includes DLP and various other add-ons. We prefer using another product which automatically logs you back onto your network when turning on your PC. With iboss, the connection is manual, which doesn't meet our needs. Additionally, sizing can be tricky because, although the initial recommendations may seem adequate, actual usage may require more gateways than anticipated.
Kamal Kumar Verma - PeerSpot reviewer
Lead Consultant at Genpact - Headstrong
Stable product with essential document tracking features
In my organization, we worked with around ten to fifteen different technologies, including Bitglass, and CASB was not among our top priorities. While CASB might benefit some organizations, it was optional for our specific setup, considering the other security measures and technologies we had in place. I found no particularly valuable features regarding CASB resolutions. There are other tools available that can achieve the same functionalities and perform similar tasks. For example, I can accomplish tasks like encryption or secure data movement from our office to the internet using alternative services like Zero Trust solutions. Because of this, our organization considered removing it from our system due to its limited benefits compared to other products.
Martin Partridge - PeerSpot reviewer
Solutions Architect at Direct Line Group
User access is simplified and secured through central core functionalities
The simplicity and logical structure of Zscaler make it easy to use and administer. It allows grouping, enabling en masse access conveniently. Unlike the BlueCoat proxy, which was more prescriptive and individual-focused, Zscaler offers group access. Additionally, Zscaler's modern tools enhance the network architecture by passing everything through a central core of security, ensuring everything is secure before accessing the internet.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"We were impressed by the solution's mental health function, which can detect if someone needs help. It scans what users are browsing and flags warning signs so we can check to see if they are okay. We've had to use it a couple of times."
"iboss has significantly lowered the number of security incidents. It is crazy how much it blocks and how much it is aware of the outside danger."
"It was a very easy product to install. It can be deployed very fast."
"We chose iboss for both zero trust and proxy (SWG) because their SWG was superior."
"Its initial setup was straightforward."
"Because of iboss, I did not have to assign web filtering tasks to my techs on a daily basis."
"I would rate the technical support of iboss a solid 10 without a shadow of a doubt."
"iboss is among the few products providing inline filtering where no application is needed on the device. It operates on the network side and is not device-based. This feature was one of the main reasons why we stayed with them for so long."
"From stability and availability standpoints, it is pretty good."
"The quarantine feature is the solution's most valuable aspect."
"The tool's most valuable feature is reporting. It helps us understand what's going on in our environment."
"The product is stable."
"Zscaler Private Access (ZPA) is the most mature compared to other vendors in terms of features and stability."
"Overall, I would rate it a nine out of ten."
"The best advantage of the product is that it is always on as a VPN, which gives us much more functionality."
"Zscaler Private Access (ZPA) is a mature, enterprise-grade Zero Trust solution that delivers security and operational benefits."
"Zscaler Private Access (ZPA) is much more secure than VPN because users are only allowed to access specific applications rather than the whole network."
"Zscaler has allowed an easy, secure way for us to access our internal resources from outside."
"I would assess the security level achieved with Zscaler Private Access (ZPA)'s Zero Trust architecture as inherent to the system."
"It provides security and has a great service user experience."
 

Cons

"Our biggest problem with their service was it did not recognize the device and filtering did not always work correctly."
"The reporting feature needs improvement."
"Sometimes the agent stops working in iboss, and we have to reinstall the agent."
"Its pricing could be better."
"Regarding pricing, setup costs, and licensing, iboss is not cheap, and that's my only concern."
"Their on-premise hardware's network interface is capped at one gigabit, which is sort of a problem. If you stand a filter up where all traffic flows through that, according to them, in order to go above a gigabit, you have to have multiple devices, which in today's IT seems a little bit silly. They could easily put in an SFP port into their device that could accommodate 10 gigs or at least offer a box."
"Sometimes when you call in support, you get someone who is just following a sheet. It feels like a runaround. You feel that you are running into that support wall."
"File integrity monitoring would be very advantageous as an additional feature."
"Proofpoint Cloud App Security Broker should be cheaper."
"The TLS encryption needs to be improved. It's not state of the art."
"I think some of the hiccups that we had were with the number of domains that we had and how that had to be implemented in Proofpoint."
"They are priced significantly higher and less cost-effective than alternative options."
"Zscaler Private Access (ZPA) can be improved by expanding integrations."
"Sometimes connection errors occur when users are unable to connect to the particular cloud."
"I am not happy with the technical support from Zscaler Private Access (ZPA), particularly in India, where reachability is an issue with salespersons."
"Customer service and support are rated seven or eight out of ten, needing improvement in quality and response time."
"One area for improvement is setting posture profiles for vendor machines."
"There are some bugs in the solution, which they are clearly working on, and they are still not resolving them. So it's taking some time."
"The lack of control over the 700+ external IPs through which traffic exits Zscaler is problematic."
"The price is a concern as it increases every year and becomes more expensive, driving customers and other vendors to look for alternatives."
 

Pricing and Cost Advice

"It is expensive compared to one of its competitors."
"It is not expensive, and it is also not cheap. iboss is priced right in the sweet spot for the number of features it offers."
"We had the cost of purchasing a new appliance along with the implementation and licensing costs. However, the following year, the cost of just licensing was similar to what was paid the previous year for a new appliance along with the implementation and licensing costs."
"We have not priced the solution recently, but they were competitive with other vendors in the past."
"The overall pricing for iboss is very competitive and transparent."
"It is probably in line with other solutions, but I do not deal with the financial side."
"The tool's most valuable feature is reporting. It helps us understand what's going on in our environment."
"We had an enterprise contract with them for about 32,000 users at that point, which has now grown."
Information not available
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Top Industries

By visitors reading reviews
No data available
Computer Software Company
18%
Outsourcing Company
14%
Financial Services Firm
12%
Manufacturing Company
8%
Financial Services Firm
13%
Insurance Company
12%
Comms Service Provider
9%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise6
Large Enterprise5
No data available
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise4
Large Enterprise7
 

Questions from the Community

What needs improvement with iboss?
For zero trust implementation, we encountered complexity issues, especially with a large infrastructure company Exxon...
What is your primary use case for iboss?
Previously when I used iboss, we did the POC for iboss for ExxonMobil. Four or five people wanted to move from our ol...
What is your experience regarding pricing and costs for iboss?
Regarding pricing, setup costs, and licensing, iboss is not cheap, and that's my only concern. There are cheaper alte...
Ask a question
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What is your experience regarding pricing and costs for Zscaler Private Access (ZPA)?
Prices for Zscaler Private Access (ZPA) are higher than traditional solutions, but it provides enhanced security.
What needs improvement with Zscaler Private Access (ZPA)?
Zscaler Private Access (ZPA) can be improved by expanding integrations. While they integrate with standard vendors su...
What is your primary use case for Zscaler Private Access (ZPA)?
Zscaler Private Access (ZPA) is a Zero Trust Network Access solution. When replacing traditional remote access VPN te...
 

Also Known As

iBoss Cloud Platform
FireLayers, PCASB
No data available
 

Overview

 

Sample Customers

More than 4,000 global enterprises trust the iboss Cloud Platform to support their modern workforces, including a large number of Fortune 50 companies.
Emerging Technologies, HP, CSA, Perion
Information Not Available
Find out what your peers are saying about Proofpoint Cloud App Security Broker vs. Zscaler Private Access (ZPA) and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.