CISO Tribune

Vendor comparison · 2 companies

AT&T vs Zscaler

AT&T sells business networking and security services, including AT&T Dynamic Defense with Palo Alto Networks, which delivers AI-driven threat prevention as a fully cloud-based service. Zscaler sells a unified cybersecurity platform built on the Zero Trust Exchange. CISO Tribune files both under SASE and SSE and Firewalls and NGFW. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • AT&T
  • Zscaler
AT&T vs Zscaler: Products, Customers and Funding Compared
AT&TAT&T sells business networking and security services, including AT&T Dynamic Defense with Palo Alto Networks, which delivers AI-driven threat prevention as a fully cloud-based service.att.comZscalerZscaler sells a unified cybersecurity platform built on the Zero Trust Exchange.zscaler.com
What it sells
  • AT&T Dynamic Defense with Palo Alto Networks[1][10]A fully cloud-based service for AI-driven threat prevention and automated response and enforcement.
  • AT&T Switched Ethernet on Demand[11]An on-demand private connection over AT&T's fiber network with optional threat detection.
  • AT&T Business Fiber[11][12]Business fiber internet with no data caps, no equipment fees, and no annual contract.
  • AT&T Private 5G Edge[13]An integrated platform providing connectivity and embedded applications.
  • Zscaler Zero Trust Browser[5]Extends Zero Trust to the browser.
  • Zscaler Deception[6]Zscaler Deception is used to detect machine-speed attacker behavior.
  • Zscaler AppProtection[4]Protects private apps from web- and identity-based attacks.
  • AI Guard[8]Provides an overview of the users and AI applications that AI Guard manages.
  • Zscaler Cloud Sandbox[7]Provides protection from threats not detectable using traditional security techniques.
  • Zscaler China Premium Access[4]Delivers secure connectivity for China-based employees.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pages2007[1]
Ownership and funding
Public (NYSE: T)[2][8][9][10][11][13][16][17]Public (NASDAQ: ZS)[2][4][13][14]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • August 6, 2026AT&T selected Ericsson to supply 600 MHz dual-band radios to support deployment of spectrum it acquired from EchoStar.[16]
  • July 28, 2026AT&T closed its acquisition of wireless spectrum licenses from EchoStar for approximately $23 billion.[17]
  • June 3, 2026AT&T launched a streamlined fiber home internet lineup with savings for customers who combine its wireless and home internet services.[7]
  • May 21, 2026AT&T launched Build-A-Plan, a wireless plan customers can adjust month to month, available online starting May 27 at $15.00 a month.[14]
  • March 31, 2026AT&T launched OneConnect, a single subscription covering wireless and home internet at one flat monthly price.[15]
  • May 21, 2026Zscaler announced its intent to acquire Symmetry Systems, a company that maps identities and data access for AI security.[12]
  • February 5, 2026Zscaler announced it has acquired SquareX to extend its Zero Trust capabilities into the browser.[13]
G2 and Gartner Peer Insights
  • G2: listed, seen November 4, 2026[8]
  • Gartner Peer Insights: listed, seen November 4, 2026[9]
  • G2: listed, seen November 10, 2026[14]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, AT&T sells its security services to business customers that maintain or newly establish at least one active AT&T wireless or wireline service connection. AT&T describes distributed environments such as branch offices, remote and hybrid workers, cloud apps, and multi-site enterprise networking. AT&T Private 5G Edge is aimed at mid-size companies or large organizations with distributed facilities. AT&T Switched Ethernet on Demand is described for organizations, large or small, that connect business locations. A healthcare use case covers protecting sensitive data across hospitals and clinics.From its own pages, Zscaler sells to organisations that need secure remote access to business applications for a hybrid workforce. Zscaler extends zero trust access to private applications for users in headquarters and branch offices. Zscaler addresses government and federal cybersecurity. Zscaler addresses state and local government operations. Zscaler offers solutions for UK healthcare organisations such as the NHS. Zscaler offers a SaaS-delivered solution for China-based employees.
Last verified
October 12, 2026November 5, 2026

Where they overlap

  • SASE and SSE is the primary category of both AT&T and Zscaler; both are also filed under Firewalls and NGFW.
  • Both are public companies.

Where they differ, field by field

  • Zscaler is also filed under Zero trust network access and Remote browser isolation.
  • AT&T lists AT&T Dynamic Defense with Palo Alto Networks, AT&T Switched Ethernet on Demand, AT&T Business Fiber and AT&T Private 5G Edge. Zscaler lists Zscaler Zero Trust Browser, Zscaler Deception, Zscaler AppProtection, AI Guard, Zscaler Cloud Sandbox and 1 more.
  • Zscaler was founded in 2007.
  • AT&T is a public company listed on NYSE as T. Zscaler is a public company listed on NASDAQ as ZS.

How they differ

CISO Tribune files both AT&T and Zscaler under SASE and SSE as their primary category, and both are public companies, AT&T on NYSE as T and Zscaler on NASDAQ as ZS. AT&T sells business networking alongside security, including AT&T Dynamic Defense with Palo Alto Networks, a fully cloud-based service that combines AT&T networking with Palo Alto Networks Prisma Access. Its other products include AT&T Switched Ethernet on Demand, AT&T Business Fiber and AT&T Private 5G Edge. Zscaler sells a unified platform built on the Zero Trust Exchange, with products such as Zscaler Zero Trust Browser, Zscaler Deception, Zscaler AppProtection and Zscaler Cloud Sandbox.

On firewalls, AT&T says its Dynamic Defense service can reduce the need for traditional hardware-based firewalls among distributed users and branches. CISO Tribune files Zscaler additionally under Zero trust network access and Remote browser isolation. Zscaler enforces browser security through an extension, an enterprise browser, or cloud browser isolation. AT&T offers its Dynamic Defense service only to business customers with at least one active AT&T wireless or wireline connection. Zscaler names government, state and local government, retail, manufacturing and UK healthcare organisations such as the NHS among the sectors it addresses. Named customers include GHD, which uses Zscaler Cloud Sandbox, and Amex GBT, which uses Zscaler Deception.

Recently, AT&T closed its acquisition of wireless spectrum licenses from EchoStar for approximately $23 billion on July 28, 2026. On August 6, 2026, AT&T selected Ericsson to supply 600 MHz dual-band radios for that spectrum. Zscaler announced on May 21, 2026 its intent to acquire Symmetry Systems, and on February 5, 2026 it announced it had acquired SquareX to extend Zero Trust into the browser. Zscaler was founded in 2007.

What it sells: AT&T

What AT&T Dynamic Defense with Palo Alto Networks does[1][10]
AT&T Dynamic Defense with Palo Alto Networks combines AT&T networking and Palo Alto Networks Prisma Access for secure cloud access for users, branches, and applications. Strata Cloud Manager applies consistent security policies across users, branches, and locations. It is delivered as a fully cloud-based service with end-to-end provisioning and operational support backed by both AT&T and Palo Alto Networks.
What AT&T Switched Ethernet on Demand does[11]
AT&T Switched Ethernet on Demand offers five Class of Service options with Service Level Agreements. Customers adjust bandwidth through a web-based dashboard.
What AT&T Business Fiber does[11][12]
AT&T Business Fiber offers the same upload and download speeds. Select plans at 1 GIG and above include built-in wireless backup at no extra cost. If the fiber network is interrupted, service can switch over automatically.
What AT&T Private 5G Edge does[13]
AT&T Private 5G Edge is designed as an integrated platform providing connectivity and embedded applications through a single platform using CBRS spectrum and/or AT&T spectrum. It is being developed for mid-size companies or large organizations with distributed facilities.

What it sells: Zscaler

What Zscaler Zero Trust Browser does[5]
Zscaler combines AI-based isolation of web threats with Browser Detection and Response (BDR) capabilities. Zscaler provides cloud-delivered and in-browser data loss prevention, including screenshot and keystroke logger protection. Zscaler enforces browser security through an extension, an enterprise browser, or cloud browser isolation.
What Zscaler AppProtection does[4]
Zscaler AppProtection streamlines private access management. Zscaler AppProtection is a key part of ZPA.
What Zscaler Cloud Sandbox does[7]
GHD uses Zscaler Cloud Sandbox to provide further protection from threats not detectable using traditional security techniques. A Zscaler dashboard widget shows the flow and dispensation of files sent to the sandbox.
What Zscaler China Premium Access does[4]
Zscaler China Premium Access is a SaaS-delivered solution. Zscaler China Premium Access delivers secure connectivity for China-based employees as a SaaS-delivered solution.

Questions about AT&T and Zscaler

What do AT&T and Zscaler sell?
AT&T sells AT&T Dynamic Defense with Palo Alto Networks, AT&T Switched Ethernet on Demand, AT&T Business Fiber and AT&T Private 5G Edge. Zscaler sells Zscaler Zero Trust Browser, Zscaler Deception, Zscaler AppProtection, AI Guard, Zscaler Cloud Sandbox and 1 more.
Are AT&T and Zscaler in the same category?
Yes. SASE and SSE is the primary category of both on CISO Tribune.
When were AT&T and Zscaler founded?
Zscaler was founded in 2007.
Who owns AT&T and Zscaler?
AT&T is a public company listed on NYSE as T. Zscaler is a public company listed on NASDAQ as ZS.
Who are AT&T and Zscaler sold to?
From its own pages, AT&T sells its security services to business customers that maintain or newly establish at least one active AT&T wireless or wireline service connection. From its own pages, Zscaler sells to organisations that need secure remote access to business applications for a hybrid workforce.
What have AT&T and Zscaler announced recently?
August 6, 2026: AT&T selected Ericsson to supply 600 MHz dual-band radios to support deployment of spectrum it acquired from EchoStar. May 21, 2026: Zscaler announced its intent to acquire Symmetry Systems, a company that maps identities and data access for AI security.

About AT&T

AT&T sells business networking and security services, including AT&T Dynamic Defense with Palo Alto Networks, which delivers AI-driven threat prevention as a fully cloud-based service.[1]

AT&T Dynamic Defense with Palo Alto Networks is delivered as a fully cloud-based service with end-to-end provisioning and operational support backed by both AT&T and Palo Alto Networks. AT&T says AI-powered detection helps stop malware, ransomware, phishing, and command-and-control traffic before it reaches users. Automated blocking and mitigation in AT&T Dynamic Defense with Palo Alto Networks act at the first indicator of compromise.

AT&T says AT&T Dynamic Defense with Palo Alto Networks helps organizations simplify the managing of separate networking and security platforms in an integrated cloud security model. AT&T Dynamic Defense with Palo Alto Networks combines AT&T networking and Palo Alto Networks Prisma Access to bring secure cloud access for users, branches, and applications. In this service, Palo Alto Networks Prisma Access can help enable secure access to private applications without users needing to be connected to the internal network. Strata Cloud Manager applies consistent security policies across users, branches, and locations. SPI is a type of integration that lets a service provider like AT&T connect its network directly to the Prisma Access infrastructure.

On firewalls, AT&T says AT&T Dynamic Defense with Palo Alto Networks can reduce the need for traditional hardware-based firewalls among distributed users and branches. Customers may use the service alongside existing firewalls when transitioning. AT&T Threat Intelligence helps secure AT&T customers in the same way AT&T secures its own infrastructure and digital assets. AT&T points to AT&T Dynamic Defense, AT&T SASE, and AT&T SD-WAN as its cybersecurity solutions.

AT&T Dynamic Defense with Palo Alto is available only to AT&T business customers that maintain or newly establish at least one active AT&T wireless or wireline service connection. Customers may use it with wireless and wireline services provided by other carriers or service providers. AT&T describes a use case in which AT&T Dynamic Defense with Palo Alto Networks helps reduce the risk of care disruptions and sensitive data exposure across hospitals and clinics.

AT&T Switched Ethernet on Demand is an on-demand private connection powered by AT&T's high-speed fiber network, with optional embedded threat detection, secure cloud access, and smart traffic control. AT&T provides a customer port connection at each location, with a standard Ethernet interface of 100 Mbps, 1 Gbps, 10 Gbps, or 100 Gbps. The port is connected via fiber to an AT&T core Ethernet switch that is part of AT&T's nationwide fiber network. Customers can scale, provision, and change network configurations with a self-service portal and only pay for the bandwidth they use. AT&T Dynamic Defense is available with AT&T Business Fiber, AT&T Dedicated Internet, and select customers of AT&T Switched Ethernet on Demand.[1][4][5][12]

AT&T sells business internet as well as security products. AT&T Business Fiber comes with no data caps, no equipment fees, and no annual contract. For AT&T Dedicated Internet, equipment may be provided by AT&T or, where eligible, supplied by the customer.[12]

AT&T Private 5G Edge is designed to be an integrated platform providing connectivity and embedded applications through a single platform, using CBRS spectrum and/or AT&T spectrum. AT&T says it is being developed for mid-size companies or large organizations with distributed facilities. AT&T says the service complements the existing Azure Public MEC service, which AT&T co-created with Microsoft.[1][3][4][12]

AT&T on the record

Sources

AT&T full record

  1. [1]CybersecurityAT&T · business.att.com · undated page, accessed October 12, 2026 · Tier A
  2. [2]Att announces 250 billion commitmentAT&T · about.att.com · published March 10, 2026 · Tier A
  3. [3]Terms of Service - Legal Policy Center - AT&TAT&T · undated page, accessed October 31, 2026 · Tier A
  4. [4]AT&T Cloud Voice with WebexAT&T Business · undated page, accessed October 31, 2026 · Tier A
  5. [5]AT&T Dedicated Internet Access for Business – AT&T BusinessAT&T Business · undated page, accessed October 31, 2026 · Tier A
  6. [6]AT&T Launches New App to Simplify Customers’ Digital ExperienceAT&T · published March 18, 2026 · Tier A
  7. [7]AT&T Launches Simple Fiber Plans: Built for More, Sold for LessAT&T · published June 3, 2026 · Tier A
  8. [8]AT&T Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 31, 2026 · Tier C
  9. [9]AT&T Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 31, 2026 · Tier C
  10. [10]Enterprise Unified Threat Management & Intelligence | AT&T Dynamic Defense with Palo Alto NetworksAT&T Business · undated page, accessed November 4, 2026 · Tier A
  11. [11]AT&T Switched Ethernet on DemandAT&T Business · undated page, accessed November 4, 2026 · Tier A
  12. [12]AT&T Business Fiber®: High Speed Business Fiber Internet ServiceAT&T Business · undated page, accessed November 4, 2026 · Tier A
  13. [13]Private 5G Edge Network with Apps and Services For Business | AT&T BusinessAT&T Business · undated page, accessed November 4, 2026 · Tier A
  14. [14]AT&T Launches Build-A-PlanAT&T · published May 21, 2026 · Tier A
  15. [15]AT&T Launches OneConnectAT&T · published March 31, 2026 · Tier A
  16. [16]AT&T and Ericsson Enhance Wireless Capacity, Coverage, and Performance NationwideAT&T · published August 6, 2026 · Tier A
  17. [17]AT&T Closes Acquisition of Spectrum Licenses from EchoStarPR Newswire · published July 28, 2026 · Tier A

Zscaler full record

  1. [1]About zscalerZscaler · zscaler.com · undated page, accessed November 5, 2026 · Tier A
  2. [2]zscaler.comZscaler · zscaler.com · undated page, accessed November 5, 2026 · Tier A
  3. [3]Leading Cloud Enterprise Security Provider for Zero TrustZscaler · undated page, accessed November 10, 2026 · Tier A
  4. [4]Products & Solutions | ZscalerZscaler · undated page, accessed November 10, 2026 · Tier A
  5. [5]Zscaler Zero Trust BrowserZscaler · undated page, accessed November 10, 2026 · Tier A
  6. [6]Stop Frontier AI with Deception | Zscaler CybersecurityZscaler · undated page, accessed November 10, 2026 · Tier A
  7. [7]GHD Case Study | Customer Stories | ZscalerZscaler · undated page, accessed November 10, 2026 · Tier A
  8. [8]About AI Guard Dashboard | ZscalerZscaler · undated page, accessed November 10, 2026 · Tier A
  9. [9]Viewing the Cybersecurity Dashboard | ZscalerZscaler · undated page, accessed November 10, 2026 · Tier A
  10. [10]About Custom Dashboards | ZscalerZscaler · undated page, accessed November 10, 2026 · Tier A
  11. [11]About Alerts | ZscalerZscaler · undated page, accessed November 10, 2026 · Tier A
  12. [12]Zscaler to Acquire Symmetry Systems, Combining Zero Trust and Access Graph Technology to Map and Secure AI Agent Communication | Zscaler, Inc.Zscaler, Inc. · published May 21, 2026 · Tier A
  13. [13]Zscaler Acquires SquareX to Advance Zero Trust Browser Security for the AI Era | ZscalerZscaler · published February 5, 2026 · Tier A
  14. [14]Zscaler Internet Access Reviews & Product DetailsG2 · undated page, accessed November 10, 2026 · Tier C

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