OpenAI's GPT-5.5 Matches Mythos in Security Vulnerability Detection

The UK's AI Security Institute just put GPT-5.5 to the test, and the results are impressive: it can detect security vulnerabilities on par with the highly-regarded Claude Mythos. This achievement is especially significant since GPT-5.5 is widely available for use.

https://osintsights.com/openais-gpt-55-matches-mythos-in-security-vulnerability-detection?utm_source=mastodon&utm_medium=social

#AiSecurity #Gpt55 #ClaudeMythos #SecurityVulnerabilityDetection #VulnerabilityAssessment

#OSINT, #BugBounty, #Pentesting, #CyberSecurity, #Infosec, #OriginServer, #CDNDetection, #DNSHistory, #SSLForensics, #FaviconFingerprinting, #AttackSurface, #InfrastructureAnalysis, #WebSecurity, #NetworkReconnaissance, #ThreatIntelligence, #SecurityResearch, #CloudSecurity, #ServerDiscovery, #DigitalForensics, #VulnerabilityAssessment

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To fix this, the origin server should be restricted to accept traffic only from Cloudflare IP ranges.

Real log

"Accuracy" gets thrown around a lot. But for practitioners doing the actual work, it means something specific.
Not a buzzword. A daily constraint.
So what does it translate to for you?

#offensivesecurity #ethicalhacking #vulnerabilityassessment

When you need accuracy, what does that actually mean for your work?

Vote below 👇

How VAPT Solutions Help Organizations Prevent Cyber Attacks in 2026

Learn how VAPT solutions in 2026 help organizations identify vulnerabilities, strengthen security posture, and proactively prevent advanced cyber attacks.

Read the full blog here: https://www.ecsinfotech.com/how-vapt-solutions-help-organizations-prevent-cyber-attacks/

#VAPTSolutions #CyberSecurity #VAPT #DataProtection #VAPTServices #VAPTTesting #VulnerabilityAssessment #PenetrationTesting #SecurityTesting #ThreatDetection #ECSInfotech #ECS

How VAPT Strengthens Mobile App Security: Essential Insights for Business Owners

Discover how VAPT enhances mobile app security, identifies vulnerabilities, ensures compliance, and protects business data from cyber threats for business owners.

📖 Read here: https://www.linkedin.com/pulse/how-vapt-strengthens-mobile-app-security-essential-insights-business-zwy1f/

#MobileAppSecurity #VAPT #CyberSecurity #DataProtection #BusinessSecurity #PenetrationTesting #VulnerabilityAssessment #AppSecurity #ECSInfotech #ECS

VAPT Audits: A Complete Guide to Methods, Pricing & Security Advantages

Comprehensive guide to VAPT audits covering methods, costs, pricing models, and key security benefits to protect systems from vulnerabilities.

👉 Read the full guide: https://www.ecsinfotech.com/vapt-audits-complete-guide-to-methods-pricing-security-advantages/

#VAPTAudit #CyberSecurity #PenetrationTesting #VulnerabilityAssessment #VAPTServices #VAPTCompany #DataProtection #CyberAwareness #ECSInfotech #ECS

LLMs are being used to automate vulnerability assessments — boosting speed, coverage, and consistency. AI is becoming a force multiplier for AppSec teams. 🤖⚡️ #AIDefense #VulnerabilityAssessment

https://www.helpnetsecurity.com/2025/12/26/llms-automated-vulnerability-assessment/

Check out ˗ˏˋ ⭒ https://lnkd.in/gE2wUqgc ⭒ ˎˊ˗ to see my intro whilst you listen.

I'm thus re-naming this work as "CVE Keeper - Security at x+1; rethinking vulnerability management beyond CVSS & scanners". I must also thank @andrewpollock for reviewing several of my verbose drafts. 🫡

So, Security at x+1; rethinking vulnerability management beyond CVSS & scanners -

Most vulnerability tooling today is optimized for disclosure and alert volume, not for making correct decisions on real systems. CVEs arrive faster than teams can evaluate them, scores are generic, context arrives late, and we still struggle to answer the only question that matters: does this actually put my system at risk right now?

Over the last few years working close to CVE lifecycle automation, I’ve been designing an open architecture that treats vulnerability management as a continuous, system-specific reasoning problem rather than a static scoring task. The goal is to assess impact on the same day for 0-days using minimal upstream data, refine accuracy over time as context improves, reason across dependencies and compound vulnerabilities, and couple automation with explicit human verification instead of replacing it.

This work explores:

⤇ 1• Same-day triage of newly disclosed and 0-day vulnerabilities
⤇ 2• Dependency-aware and compound vulnerability impact assessment
⤇ 3• Correlating classical CVSS with AI-specific threat vectors
⤇ 4• Reducing operational noise, unnecessary reboots, and security burnout
⤇ 5• Making high-quality vulnerability intelligence accessible beyond enterprise teams

The core belief is simple: most security failures come from misjudged impact, not missed vulnerabilities. Accuracy, context, and accountability matter more than volume.

I’m sharing this to invite feedback from folks working in CVE, OSV, vulnerability disclosure, AI security, infra, and systems research. Disagreement and critique are welcome. This problem affects everyone, and I don’t think incremental tooling alone will solve it.

P.S.

• Super appreciate everyone that's spent time reviewing my drafts and reading all my essays lol. I owe you 🫶🏻
• ... and GoogleLM. These slides would have taken me forever to make otherwise.

Take my CVE-data User Survey to allow me to tailor your needs into my design - lnkd.in/gcyvnZeE
See more at - lnkd.in/gGWQfBW5
lnkd.in/gE2wUqgc

#VulnerabilityManagement #Risk #ThreatModeling #CVE #CyberSecurity #Infosec #VulnerabilityManagement #ThreatIntelligence #ApplicationSecurity #SecurityOperations #ZeroDay #RiskManagement #DevSecOps #CVE #CVEAnalysis #VulnerabilityDisclosure #SecurityData #CVSS #VulnerabilityAssessment #PatchManagement #AI #AIML #AISecurity #MachineLearning #AIThreats #AIinSecurity #SecureAI #OSS #Rust #ZeroTrust #Security

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