Skip to main content

Is zksync.io a Scam? Security Check Results - ZKsync Reviews

zksync.io favicon

Is zksync.io Safe? Security Analysis for ZKsync

Check if zksync.io is a scam or legitimate. Free security scan and reviews.

FinanceN/aenterprise
ReactNext.jsJavaScriptGoogle Tag ManagerLinkedIn Insight Tag
Analyzed 9/6/2025Completed 1:29:59 PM
65
Security Score
MEDIUM RISK

AI Summary

ZKsync is an enterprise-focused blockchain technology company specializing in Ethereum-based zero-knowledge rollup solutions. Their platform enables banks, exchanges, and enterprises to leverage scalable, privacy-preserving, and compliant blockchain infrastructure. Positioned as a leading provider in the blockchain finance sector, ZKsync offers products such as Prividium, a private blockchain with built-in compliance, and the ZKsync Stack framework for building new chains. The company emphasizes interoperability, security, and regulatory transparency to support financial institutions and fintechs in adopting digital assets. Technically, ZKsync employs a modern web stack including React and Next.js, ensuring fast performance, mobile optimization, and good accessibility. The website is professionally designed with clear navigation and comprehensive content, reflecting a mature digital presence. Analytics tools like Google Analytics and LinkedIn Insight are used for moderate user tracking, balanced with privacy policies that indicate GDPR compliance. From a security perspective, the site enforces HTTPS and secure form handling but lacks explicit security headers and publicly available incident response or vulnerability disclosure information. The WHOIS data is privacy protected, which is typical for enterprise blockchain firms, and no suspicious patterns were detected. Overall, the security posture is solid but could be improved by adding more transparency and security best practices. The overall risk assessment is low, with a trustworthy and professional online presence supporting a legitimate and enterprise-grade blockchain solution provider. Strategic recommendations include enhancing security headers, publishing incident response details, and implementing cookie consent mechanisms to improve privacy compliance and user trust.

Detected Technologies

ReactNext.jsJavaScriptGoogle Tag ManagerLinkedIn Insight Tag

🧠AI Business Intelligence

Technology stack, business insights, and market analysis powered by AI.

Business Intelligence

Market & Strategic Analysis

ZKsync operates in the blockchain and finance sectors, targeting banks, exchanges, fintechs, and asset managers. Their competitive advantage lies in providing scalable, privacy-focused, and compliant blockchain infrastructure built on Ethereum. Revenue streams likely include enterprise blockchain deployments, licensing of their ZKsync Stack framework, and ecosystem services such as wallets and interoperability solutions. The company has strong partnerships with reputable financial institutions like Deutsche Bank and Sygnum, enhancing market credibility. Growth indicators include extensive press coverage, research reports, and a broad product suite addressing key industry needs. The partnership ecosystem and developer resources suggest a strategic focus on ecosystem expansion and developer engagement.

Security Posture Analysis

Comprehensive Security Assessment

ZKsync demonstrates a mature security posture with HTTPS enforcement and secure form inputs. However, the absence of explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces defense-in-depth. No public security policy or incident response information is available, which limits transparency and preparedness perception. The lack of a vulnerability disclosure program or security.txt file is a gap in responsible disclosure practices. Privacy policies are comprehensive and GDPR compliant, but cookie consent mechanisms are missing, which may affect compliance in some jurisdictions. Overall, the security maturity is good but can be enhanced by adopting additional best practices and transparency measures.

Strategic Recommendations

Priority Actions for Security Improvement

1

Implement and publish comprehensive security headers including CSP, HSTS, and X-Frame-Options.

Observations

AI-powered comprehensive website and business analysis.

AI-Enhanced Website Analysis

Business Insights

Company:

ZKsync

Description:

ZKsync helps banks and companies future-proof finance and expand into global digital assets with privacy and compliance. Built on Ethereum, it delivers privacy, scalability, and compliance needed to issue assets, power payments, and launch new financial products.

Key Services:
ZKsync Prividium - private blockchain with privacy and complianceZKsync Stack - ZK rollup frameworkZKsync SSO - ecosystem walletZKsync Airbender - fast proverInteropability between ZKsync chains
Content Quality:

excellent

Branding:

consistent

Technical Stack

Technologies:
ReactNext.jsJavaScriptGoogle Tag ManagerLinkedIn Insight Tag
Frameworks:
Next.js
Performance:

fast

Mobile:

excellent

Accessibility:

good

SEO:

good

Security Assessment

Security Score:
85/100
Best Practices:
  • HTTPS enforced
  • Secure forms with input validation
  • No exposed sensitive data in HTML

Analytics & Tracking

Services:
Google AnalyticsLinkedIn Insight
Tracking Level:moderate
Privacy Compliance:basic

Advertising & Marketing

Ad Networks:
LinkedIn Ads
Tracking Pixels:
LinkedIn Insight Tag
Marketing Tools:
LinkedIn Insight
Transparency Level:good

Website Quality Assessment

Design Quality:excellent
User Experience:excellent
Content Relevance:excellent
Navigation Clarity:excellent
Professionalism:excellent
Trustworthiness:high

Key Observations

1

Website is fully accessible with rich content and professional design.

🛡️Security Headers

HTTP security headers analysis and recommendations.

Security Headers

HTTP security headers analysis

30/100
Score

Missing X-Frame-Options header

HIGH

Prevents clickjacking attacks

Missing X-Content-Type-Options header

MEDIUM

Prevents MIME type sniffing

Missing Content-Security-Policy header

HIGH

Controls resources the browser is allowed to load

Missing X-XSS-Protection header

MEDIUM

Legacy XSS protection (deprecated but still recommended)

Missing Referrer-Policy header

LOW

Controls referrer information sent with requests

Missing Permissions-Policy header

MEDIUM

Controls browser features and APIs

Sensitive data may be cached

LOW

Cache-Control header should include "no-store" for sensitive pages

👤GDPR Compliance

Privacy and data protection assessment under GDPR regulations.

GDPR Compliance

Privacy and data protection assessment

68/100
Score

No Cookie Consent Banner found

HIGH

GDPR requires explicit consent for non-essential cookies

No Data Protection Officer mentioned

LOW

Large organizations may need to designate a DPO under GDPR

Privacy policy may not be GDPR compliant

MEDIUM

Privacy policy lacks explicit GDPR compliance elements

GDPR Compliance Analysis

Privacy Policy85% confidence
Cookie Policy85% confidence
Contact Information Found90% confidence
phone

🛡️NIS2 Compliance

Network & Information Security Directive compliance assessment.

NIS2 Compliance

Network & Information Security Directive

2/100
Score

No information security framework found

HIGH

NIS2 requires documented cybersecurity and information security measures

No vulnerability disclosure policy

MEDIUM

NIS2 encourages coordinated vulnerability disclosure

No security policy documentation found

HIGH

NIS2 requires documented cybersecurity governance and risk management

No incident response procedures found

HIGH

NIS2 requires documented incident response and business continuity plans

No business continuity planning found

MEDIUM

NIS2 emphasizes operational resilience and business continuity

No security contact information

HIGH

NIS2 requires clear incident reporting channels

No vulnerability reporting mechanism

MEDIUM

Clear vulnerability reporting supports coordinated disclosure

No NIS2 reference found

LOW

Consider explicitly mentioning NIS2 compliance efforts

Critical sector without clear security compliance

HIGH

Detected sectors: energy, transport, banking, digital

📧Email Security

SPF, DKIM, and DMARC validation and email security assessment.

Email Security

SPF, DKIM, and DMARC validation

80/100
Score

No DMARC reporting

LOW

DMARC aggregate reports not configured

Strict DMARC Alignment

LOW

Strict alignment may cause legitimate emails to fail

No BIMI Record

LOW

BIMI displays brand logos in email clients

No MTA-STS Policy

MEDIUM

MTA-STS enforces TLS for email delivery

No TLS-RPT Record

LOW

TLS-RPT provides reporting for email TLS issues

SPF
Sender Policy Framework
DKIM
DomainKeys Identified Mail
DMARC
Domain-based Message Authentication
MX Records
Mail Exchange Records
BIMI
Brand Indicators
MTA-STS
Mail Transfer Agent Security
TLS-RPT
TLS Reporting
DNSSEC
DNS Security
SPF Details
Record:
v=spf1 include:_spf.google.com include:20178098.spf03.hubspotemail.net -all
DNS Lookups:2/10
Policy:-all
DKIM Selectors Found
Selector:google(1416-bit rsa)
Selector:s1(1440-bit rsa)
DMARC Details
Policy:reject
Forensic Reports:dmarc@zksync.io

🏆SSL/TLS Security

Certificate validity and encryption analysis.

SSL/TLS Security

Certificate validity and encryption analysis

72/100
Score

Weak Protocols Supported

HIGH

Server supports weak protocols: TLSv1.1

OCSP Stapling Not Enabled

LOW

OCSP stapling improves performance and privacy

Certificate Transparency Not Implemented

LOW

Certificate is not logged in Certificate Transparency logs

SSL Certificate Expires Within 90 Days

MEDIUM

SSL certificate expires in 80 days

Partial SSL/TLS Assessment

LOW

Completed 3 of 4 security checks due to time constraints

Protocol Support

TLSv1.3TLSv1.2TLSv1.1

OCSP Status

OCSP Stapling Disabled

📊DNS Health

DNS configuration and security assessment.

DNS Health

DNS configuration and security assessment

80/100
Score

DNSSEC Not Enabled

MEDIUM

DNSSEC is not configured for this domain

CAA Records Not Configured

LOW

Certificate Authority Authorization (CAA) records not found

Domain Delete Lock Not Enabled

LOW

Domain can be deleted without additional verification

Domain Registration Details

Domain Age
5 years(mature)
Expiry Risk
none(424 days)
Protection Level
basicDNSSEC OFF
Suspicious Indicators Detected
  • Privacy/proxy registration detected

DNS Records

A Records:76.76.21.21
Name Servers:
charles.ns.cloudflare.com
lily.ns.cloudflare.com
MX Records:
1: aspmx.l.google.com
5: alt1.aspmx.l.google.com
5: alt2.aspmx.l.google.com
10: aspmx2.googlemail.com
10: aspmx3.googlemail.com
SOA:Serial: 2382603993, TTL: 1800s

DNSSEC Status

DNSSEC Not Enabled

DNS Performance

Resolution Time:97ms

SPF Analysis

SPF Record:
v=spf1 include:_spf.google.com include:20178098.spf03.hubspotemail.net -all

Network Security

Port scanning and network exposure analysis.

Network Security

Port scanning and network exposure analysis

100/100
Score

Good Network Security Posture

LOW

No unnecessary services detected on common risky ports

🔧Technical Analysis

Detailed technical findings and analysis from AI assessment.

Technical Analysis

Comprehensive security assessment findings

Additional Findings

The website is built using modern web technologies including React and Next.js, enabling server-side rendering and optimized performance. The site is mobile responsive with good accessibility features and SEO optimization. Analytics and marketing tools such as Google Tag Manager and LinkedIn Insight are integrated for user tracking and marketing insights. The hosting provider is not explicitly identified, but the site uses HTTPS with a valid SSL certificate. No CMS is detected, indicating a custom or framework-based solution. Performance is fast with preloading of fonts and images. Technical risks are minimal but could include reliance on third-party tracking scripts without explicit user consent.
Analyze Another Website