CISO Tribune

Vendor comparison · 2 companies

Contrast Security vs Guardsquare

Contrast Security sells an Application and API Security platform built to detect and stop live application-layer attacks. Guardsquare sells a suite of mobile app security solutions for businesses across industries. CISO Tribune files both under Application shielding and RASP. 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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Up to four companies side by side.

  • Contrast Security
  • Guardsquare
Contrast Security vs Guardsquare: Products, Customers and Funding Compared
Contrast SecurityContrast Security sells an Application and API Security platform built to detect and stop live application-layer attacks.contrastsecurity.comGuardsquareGuardsquare sells a suite of mobile app security solutions for businesses across industries.guardsquare.com
What it sells
  • Contrast One[8]A managed Application Security service from Contrast Security.
  • AppSweep[3][7]App security testing product for mobile apps and SDKs.
  • App attestation[3][8][11]Ensures a mobile app calling your APIs is authentic and untampered.
  • ProGuard[1][3][5][6]Open source optimizer to shrink and obfuscate Java and Kotlin apps.
Categories
Headquarters
Not stated on its pagesLeuven, Belgium[1]
Founded
2014[2]Not stated on its pages
Ownership and funding
Not stated on its pagesPrivately held[3][4][15]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • October 6, 2026Guardsquare announced the opening of its regional office in Singapore, its first physical presence in Asia-Pacific.[14]
  • February 5, 2026Guardsquare completed the acquisition of the Extended Threat Defense technology and assets from Verimatrix.[15]
G2 and Gartner Peer Insights
  • G2: listed, seen October 24, 2026[3]
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: listed, seen November 5, 2026[4]
Who it fits
From its own pages, Contrast Security sells mainly to security and engineering teams, bringing Dev, AppSec and SecOps around a shared view of what happens inside applications. Its pages say CEOs look to CISOs to solve the problem of application vulnerability breaches, and that more CISOs look to Contrast. The customers it names include a banking platform provider and a financial institution handling sensitive customer data. Contrast One is offered to organizations that lack the resources to build a comprehensive AppSec team.From its own pages, Guardsquare sells to financial services institutions, medical and healthcare organizations, and gaming, retail and eCommerce companies. Guardsquare addresses FinTech developers who need to protect financial transactions and user accounts. Guardsquare directs its banking pages at mobile banking apps that run on unmanaged devices. Guardsquare describes AppSweep as designed for developers and ready for enterprise needs.
Last verified
November 2, 2026November 9, 2026

Where they overlap

  • Application shielding and RASP is the primary category of both Contrast Security and Guardsquare.

Where they differ, field by field

  • Contrast Security is also filed under Dynamic application security testing.
  • Contrast Security lists Contrast One. Guardsquare lists AppSweep, App attestation and ProGuard.
  • Guardsquare is headquartered in Leuven, Belgium.
  • Contrast Security was founded in 2014.
  • Guardsquare is privately held.

How they differ

CISO Tribune files both Contrast Security and Guardsquare under Application shielding and RASP, and in both cases that is the primary category. Contrast Security also appears under Dynamic application security testing. Contrast Security sells an Application and API Security platform that uses in-app sensors for Application Detection and Response and Application Security Testing, plus a managed service called Contrast One. Guardsquare sells mobile app security: AppSweep for testing mobile apps and SDKs, App attestation for API callers, and ProGuard, an open source optimizer for Java and Kotlin apps. Guardsquare's DexGuard and iXGuard add obfuscation and built-in RASP for Android and iOS apps.

Contrast Security works from inside running applications through runtime instrumentation, and its CVE Shield starts with Java applications on Linux-based systems. Guardsquare's tools center on mobile apps, and DexGuard and iXGuard run as command-line, post-build compiler tools. Contrast Security lists a free tier limited to one user and two applications, and a Pro plan starting at $750 a month billed annually.

Guardsquare is headquartered in Leuven, Belgium, and is privately held. Contrast Security was founded in 2014. Among the customers Contrast Security names are Citizens Bank, Backbase and AARP. Guardsquare says its clients include financial services institutions, medical and healthcare organizations, and gaming, retail and eCommerce companies. On February 5, 2026, Guardsquare completed the acquisition of the Extended Threat Defense technology and assets from Verimatrix. On October 6, 2026, Guardsquare announced a regional office in Singapore, its first physical presence in Asia-Pacific.

What it sells: Contrast Security

What Contrast One does[8]
Contrast One is a managed Application Security service. It is available for Application Security Testing and Application Detection and Response.

What it sells: Guardsquare

What AppSweep does[3][7]
AppSweep finds and addresses security issues in mobile apps and SDKs. Developers can integrate the AppSweep CLI into CI pipelines such as Bitrise, Fastlane, Github and Jenkins. AppSweep groups findings according to OWASP MASVS. AppSweep Enterprise supports the upload of larger apps and lets teams define automated data retention policies.
What App attestation does[3][8][11]
App attestation lets developers ensure that any mobile app calling their APIs is authentic and untampered. App attestation gathers insights about the behavior of users and their devices, helping security teams fine-tune policies without rebuilding the application.
What ProGuard does[1][3][5][6]
Guardsquare offers ProGuard as an open source optimizer to shrink and obfuscate Java and Kotlin apps. ProGuard is the technology behind the minification of Android applications.

Questions about Contrast Security and Guardsquare

What do Contrast Security and Guardsquare sell?
Contrast Security sells Contrast One. Guardsquare sells AppSweep, App attestation and ProGuard.
Are Contrast Security and Guardsquare in the same category?
Yes. Application shielding and RASP is the primary category of both on CISO Tribune.
Where are Contrast Security and Guardsquare headquartered?
Guardsquare is headquartered in Leuven, Belgium.
When were Contrast Security and Guardsquare founded?
Contrast Security was founded in 2014.
Who owns Contrast Security and Guardsquare?
Guardsquare is privately held.
Who are Contrast Security and Guardsquare sold to?
From its own pages, Contrast Security sells mainly to security and engineering teams, bringing Dev, AppSec and SecOps around a shared view of what happens inside applications. From its own pages, Guardsquare sells to financial services institutions, medical and healthcare organizations, and gaming, retail and eCommerce companies.
What have Contrast Security and Guardsquare announced recently?
October 6, 2026: Guardsquare announced the opening of its regional office in Singapore, its first physical presence in Asia-Pacific.

About Contrast Security

Contrast Security sells an Application and API Security platform built to detect and stop live application-layer attacks. Contrast Security delivers real-time visibility and protection from inside running applications, using patented in-app sensors and a unified platform for Application Detection and Response and Application Security Testing. Contrast Security says that, unlike legacy tools that operate outside the application, it protects software from within.[4]

The approach rests on runtime instrumentation. Contrast instruments an application from within and observes every method, every request and every attack path as it happens. Contrast also says it reports only verified, exploitable vulnerabilities with a fix attached. The Contrast Graph links active attacks to specific lines of code in real time.[1][5]

CVE Shield deploys inside running applications without requiring code changes. CVE Shield operates within the application runtime to detect and block exploitation attempts against known vulnerabilities in third-party libraries. CVE Shield starts with Java applications on Linux-based systems. The free tier is limited to one user and up to two applications, and it provides real-time monitoring in observation mode with no automated blocking. Blocking mode is available in the Pro and Enterprise plans. Pro is a flat annual price starting at $750 a month billed annually.[1][6][7]

Contrast One is a managed Application Security service launched by Contrast Security. Contrast One is available for Application Security Testing and Application Detection and Response.[8]

Contrast Security was launched by its founder, Jeff Williams. Jeff Williams helped create OWASP in 2001. Contrast names Citizens Bank, Backbase and AARP among the companies that follow his plan. Backbase integrated Contrast Application Detection and Response to gain real-time visibility into attacks on its banking platform. Fortuneo replaced manual testing with Contrast automated, real-time protection.[4][9]

On data handling, Contrast agents minimize the data collected by reporting only confirmed vulnerabilities to the Contrast Team Server. Contrast hosts its application services and data on Amazon Web Services facilities in the United States, Europe, the UK and Japan.[1][4][5][8][9][10][11][12]

Contrast Security on the record

Sources

Contrast Security full record

  1. [1]contrastsecurity.comContrast Security · contrastsecurity.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Contrast security recognized by the 2023 gartner peer insights voice of the customer for application security testing 302008541Contrast Security via PR Newswire · prnewswire.com · published December 7, 2023 · Tier A
  3. [3]Contrast Security Reviews & Product Details - G2G2 · undated page, accessed October 24, 2026 · Tier C
  4. [4]About Us | Get Secure Code Moving | Contrast SecurityContrast Security · undated page, accessed November 3, 2026 · Tier A
  5. [5]Runtime Application Security for AI-Generated Code | Contrast SecurityContrast Security · undated page, accessed November 3, 2026 · Tier A
  6. [6]Protect Applications from CVEs | Contrast SecurityContrast Security · undated page, accessed November 3, 2026 · Tier A
  7. [7]Contrast Security Pricing and Packaging | Application Security Pricing | Contrast SecurityContrast Security · undated page, accessed November 3, 2026 · Tier A
  8. [8]Managed Application Security Launched by Contrast SecurityContrast Security · published October 23, 2024 · Tier A
  9. [9]Customers | Customer Success Stories | Contrast SecurityContrast Security · undated page, accessed November 3, 2026 · Tier A
  10. [10]Contrast Security Honored with Inaugural Wiz Integrations (WIN) Partner AwardContrast Security · published July 30, 2025 · Tier A
  11. [11]Trust Center | Security PracticesContrast Security · undated page, accessed November 3, 2026 · Tier A
  12. [12]CISO Should Prioritize AppSec | Contrast SecurityContrast Security · undated page, accessed November 3, 2026 · Tier A

Guardsquare full record

  1. [1]Guardsquare announces departure co founder heidi rakelsGuardsquare · guardsquare.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Guardsquare announces 29 million investment battery venturesGuardsquare · guardsquare.com · published January 28, 2019 · Tier A
  3. [3]Leader In Mobile App Security | GuardsquareGuardsquare · undated page, accessed October 25, 2026 · Tier A
  4. [4]GuardSquare Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 25, 2026 · Tier C
  5. [5]About Us - Read Here | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  6. [6]Mobile Finance App Security Compliance in Pakistan | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  7. [7]Mobile Application Security Testing | AppSweepGuardsquare · undated page, accessed November 5, 2026 · Tier A
  8. [8]Mobile App Security for FinTech | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  9. [9]What is Mobile App Security? | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  10. [10]Regulatory Compliance for Mobile App Security | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  11. [11]Mobile Banking Security Solution | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  12. [12]Learn About Our Customers | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  13. [13]Mobile Retail and E-Commerce Application Protection | GuardsquareGuardsquare · undated page, accessed November 5, 2026 · Tier A
  14. [14]Guardsquare Accelerates Asia-Pacific Growth with Office Opening in SingaporeGuardsquare · published October 6, 2026 · Tier A
  15. [15]Guardsquare Acquires Verimatrix XTD, Setting a New Standard for End-to-End Mobile App SecurityGuardsquare · published February 5, 2026 · Tier A

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