The product
A proof-of-concept tool for generating payloads that exploit unsafe Java object deserialization.
The closest ysoserial alternatives are COGICEO Pentests, VinCSS Penetration Testing and RunSybil. Picking a ysoserial alternative comes down to fit: Penetration Testing coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
Closest 48 alternatives shownClosest matches: COGICEO Pentests, VinCSS Penetration Testing, RunSybilPage updated Nov 2026
The product
A proof-of-concept tool for generating payloads that exploit unsafe Java object deserialization.
ysoserial is a free Penetration Testing solution. The closest matches by shared tags and NIST CSF 2.0 coverage are COGICEO Pentests, VinCSS Penetration Testing, RunSybil, Novee AI Pentesting, and Tenzai. All 48 alternatives on this page are ranked the same way.
These 8 solutions overlap most with ysoserial. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
Penetration testing service by French firm COGICEO to find and fix IT security
Key features: 5 listed. See them on the COGICEO Pentests page.
View COGICEO PentestsCOGICEO Pentests alternativesysoserial vs COGICEO Pentests
VinCSS Penetration Testing is a manual security assessment service for application systems, including IoT/SCADA, automotive, devices, and mobile operating systems. The service evaluates the exploitability of vulnerabilities in a target system through expert-led testing, with partial support from automated tools, to determine real-world risk rather than relying solely on scanning. Testing is offered in three modes: - Black Box: testing performed without internal system information - Gray Box: testing performed with partial internal information such as architecture and API documentation - White Box: testing performed with full access to source code and system documentation The engagement process includes scope definition, information handover (for gray/white box), test execution, reporting, and post-remediation verification. Reports classify and rate identified issues based on technical and business impact criteria, include exploitation evidence, reproduction scripts, and remediation recommendations. VinCSS also provides consulting support after the report is delivered, working with clients to verify remediation status until issues are resolved, and issuing a confirmation report once remediation is complete.</description> <parameter name="summary">Manual penetration testing service for applications, IoT/SCADA, and other systems
Key features: 8 listed. See them on the VinCSS Penetration Testing page.
View VinCSS Penetration TestingVinCSS Penetration Testing alternativesysoserial vs VinCSS Penetration Testing
AI-driven continuous attack surface assessment and validation platform.
Key features: 10 listed. See them on the RunSybil page.
AI-driven continuous penetration testing platform with automated remediation.
Key features: 10 listed. See them on the Novee AI Pentesting page.
View Novee AI PentestingNovee AI Pentesting alternativesysoserial vs Novee AI Pentesting
Agentic AI platform for continuous, autonomous penetration testing of enterprise apps.
Key features: 6 listed. See them on the Tenzai page.
Continuous DAST and real-time human-verified penetration testing for SaaS.
Key features: 8 listed. See them on the GlitchSecure page.
View GlitchSecureGlitchSecure alternativesysoserial vs GlitchSecure
Agentless automated pentest platform for continuous infrastructure security testing.
Key features: 10 listed. See them on the PT Dephaze page.
View PT DephazePT Dephaze alternativesysoserial vs PT Dephaze
PTaaS platform combining human pentesters with AI for continuous security testing.
Key features: 10 listed. See them on the NetSPI Platform page.
View NetSPI PlatformNetSPI Platform alternativesysoserial vs NetSPI Platform
Penetration testing service by French firm COGICEO to find and fix IT security
AI-driven continuous penetration testing platform with automated remediation.
Agentic AI platform for continuous, autonomous penetration testing of enterprise apps.
Continuous DAST and real-time human-verified penetration testing for SaaS.
Agentless automated pentest platform for continuous infrastructure security testing.
PTaaS platform combining human pentesters with AI for continuous security testing.
AI-driven pentest suite: Cipher tests live apps, Niro secures PRs in CI/CD.
Public benchmark of Cipher AI pentesting agent vs. 104 XBOW challenges.
Autonomous AI agent platform for continuous pentesting with verified exploits.
AI-autonomous pentesting platform for continuous web, API & AI app testing.
Autonomous AI pentest platform delivering audit-grade reports in hours.
Human-led manual pentesting service for complex logic and critical asset risks.
Hybrid PTaaS platform combining AI scanning with expert hacker validation.
On-demand human-led PTaaS with peer-reviewed findings and 48hr start.
AI-native VAPT operating system for pentest teams: from scan ingestion to final report.
AI agent-based autonomous pentesting tool for continuous web app vulnerability discovery.
Manual and automated VAPT service covering web, API, network, cloud, mobile and wireless
Platform for orchestrating and automating penetration testing and attack path management
Pentesting and ethical hacking service testing infra, apps, IoT and OT systems
Pentest management platform for tracking engagements, vulnerabilities
Manual application security assessments and secure code review services
AI agents that autonomously reason, chain exploits, and adapt like attackers to pen test
Manual penetration testing service by certified ethical hackers
Professional vulnerability assessment and penetration testing service
AI agent swarm plus human-verified pentesting with sign-off logging and tiered engagements
Combines automated vulnerability scanning with expert-led manual penetration testing
Intake page for requesting a security testing engagement from VulBox
AI pentester with human countersignature for SOC 2 & ISO 27001 audits.
AI-powered automated penetration testing platform for vulnerability discovery
A web application security testing platform that combines manual and automated testing tools for conducting comprehensive security assessments and penetration testing.
AI-powered automated pen testing & continuous red teaming platform
ImmuniWeb® On-Demand is a web application penetration testing platform that combines AI-powered automation with manual security testing to provide comprehensive vulnerability assessments and compliance reporting.
ImmuniWeb MobileSuite is a mobile application penetration testing platform that combines AI-powered automation with manual security testing to assess mobile apps and their backend infrastructure for security vulnerabilities and compliance requirements.
Pentest management platform for reporting, project mgmt & client collaboration
Pentest reporting & exposure mgmt platform for vulnerability remediation
Penetration testing software for simulating attacks and validating vulnerabilities
AI-powered autonomous penetration testing platform with multi-agent system
Continuous pentesting service monitoring web apps & APIs for code changes
AI-powered automated penetration testing platform for web apps and networks
AI-powered agent for automated security reviews and penetration testing
AI-powered automated penetration testing platform for on-demand security audits
Common questions when weighing alternatives to ysoserial.
The closest matches to ysoserial by shared tags and NIST CSF 2.0 coverage are COGICEO Pentests, VinCSS Penetration Testing, RunSybil, Novee AI Pentesting, and Tenzai. All of them are Penetration Testing products.
This page shows 48 alternatives to ysoserial, all in the Penetration Testing category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
ysoserial is a free Penetration Testing product. You can use it at no cost. Only commercial alternatives are listed here. Free and open source products are under /free.
ysoserial is a Penetration Testing product in the Offensive Security category. You can compare it with the 48 other Penetration Testing products on this page.
