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CyStack

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28 reviews
  • 5 profiles
  • 9 categories
Average star rating
4.5
Serving customers since
2017

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CyStack Security Services

20 reviews

CyStack provides customized and scalable cybersecurity solutions to help you meet your specific security needs, including testing, security consulting and management services. Our solutions focus on protecting data, preventing cyber-attacks, and managing information security risks by adopting cutting-edge technologies in Automated Security, Crowdsourced Security, and AI. With 200+ businesses and 20,000+ users worldwide, we are recognized as a trusted partner to organizations and a leading powerhouse in cybersecurity research and development. By partnering with CyStack, you can focus on growing their business while having peace of mind that their data and assets are well-protected from cyber threats.

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Locker Password Manager

8 reviews

Locker is a password manager that goes beyond the mere concept of password management. Locker stores your sensitive data, logs you in to your favorite sites, scans for data breaches, and more. Every feature in Locker is built on the foundation of privacy and transparency to ensure the highest security for users. We believe everyone deserves a secure and seamless internet experience, and Locker strives to provide just that. No matter if you are tech-savvy or not, you can always keep yourself safe online with Locker. Locker for Business is an advanced business password manager. Mitigate risks. Improve productivity

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CyStack Platform

0 reviews

CyStack Platform is a web security platform delivered as a service. It simplifies security practices by applying the technology built up by white-hat hackers

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CyStack Endpoint

0 reviews

CyStack Endpoint is a comprehensive platform for managing and securing a company's devices. It simplifies IT operations by consolidating multiple functions into a single interface. The platform provides robust security by automatically detecting threats, including malware and vulnerabilities, and managing patch updates. It also ensures data protection through file labeling, tracking data movement, and controlling data input/output. This helps businesses maintain compliance with security standards like ISO 27001 and Decree 13. For IT and device management, CyStack Endpoint allows administrators to remotely control all devices, supporting various operating systems from Windows to iOS. It streamlines tasks like employee onboarding and offboarding, and it can automatically configure VPNs and restrict access to peripherals or specific network addresses. This makes technical support more efficient while ensuring device-level security policies are consistently enforced.

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WhiteHub

0 reviews

For enterprises, WhiteHub offers a technological solution that enables access to over 1500 security researchers to discover critical vulnerabilities in products, including those not discoverable by using traditional solutions and automated tools. For experts, WhiteHub provides a professional and transparent environment designed to help researchers, white-hat hackers and security engineers develop their skills, build reputation and gain income while pursuing their passion for pentesting applications developed by enterprises.

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CyStack Reviews

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Star Rating
23
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1
Leo N.
LN
Leo N.
12/18/2025
Validated Reviewer
Review source: Organic

Exceptional Security Partner for High-Stakes Blockchain Projects

We build and ship blockchain products for demanding clients, and CyStack is the team we call when failure is not an option. A good example is 1Ma**** – a network made by Vietnamese for Vietnamese, backed by leading financial and tech groups and tied to the country’s national blockchain strategy. On projects like that, what I appreciate most is that CyStack doesn’t give us a pretty PDF and disappear. They pressure-test the design, find real issues (not theoretical noise), sit down with our engineers, and stay with us through remediation and re-testing. We’ve done multiple audits with them now, and the pattern is consistent: clear priorities, practical fixes, and no drama.
Trần Nhật T.
TT
Trần Nhật T.
11/18/2025
Validated Reviewer
Review source: Organic
Verified User in Computer & Network Security
EC
Verified User in Computer & Network Security
11/12/2025
Validated Reviewer
Review source: Seller invite
Incentivized Review

Accommodating Partner for Penetration Testing Needs

We engaged CyStack Security Services to support our team with penetration testing projects, especially during periods of high demand when our internal capacity was stretched. As a cybersecurity-focused organization, maintaining both quality and speed in testing is critical to our operations. CyStack’s team proved to be an excellent extension of our capabilities. Their technical depth and strong understanding of complex security vulnerabilities helped us identify critical issues quickly and efficiently. Their clear communication, timely response, and professional project management made collaboration smooth and dependable. One of the most valuable aspects of working with CyStack is their flexibility and accommodating nature. They adapted well to our internal workflows and changing priorities without compromising quality or delivery timelines. The actionable reports and practical remediation guidance they provided enabled our teams to fix issues faster and more effectively. Overall, CyStack has been a reliable and trusted partner in helping us scale our security testing operations. Their combination of technical expertise, professionalism, and cooperative attitude makes this partnership both productive and sustainable. We look forward to continuing this collaboration in future projects.

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HQ Location:
Hanoi, VN

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What is CyStack?

CyStack (https://cystack.net/) is a cybersecurity firm that specializes in providing comprehensive security solutions to protect businesses from online threats. Their services are designed to secure digital assets, ensure compliance with standards, and enhance overall cyber defenses through cutting-edge technology and expertise. CyStack offers a range of security tools and services, including vulnerability assessments, penetration testing, security monitoring, and incident response. Their solutions cater to various sectors, including eCommerce, finance, and healthcare, helping organizations defend against cyberattacks and data breaches effectively. With an emphasis on innovation and customer-centric approaches, CyStack is committed to helping businesses maintain robust cybersecurity postures in the ever-evolving digital landscape.

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Year Founded
2017