Best Practices for Conducting Security Testing

Most product founders (or aspiring founders) think cybersecurity is something that can be added on as we go. In 2024, 68 % of breaches involved a non‑malicious human element, like misconfigurations or coding oversights. Security isn’t a checkbox at launch; it’s a mindset woven into every sprint, every pull request, every architectural decision. Here’s a playbook we, at GrayCyan, have developed: 1️⃣. Threat Model Upfront Before you write a single line of code, map out your attack surface. What data are you storing? Who could target it, and how? A lightweight threat model (even a few whiteboard sketches) helps you prioritize controls around your riskiest assets. 2️⃣. Secure Design Patterns Adopt proven patterns—like input validation, output encoding, and the principle of least privilege—right in your prototypes. Whether it’s microservices or monolithic apps, enforcing separation of concerns and privilege boundaries early means fewer surprises down the road. 3️⃣. Shift‑Left Testing Integrate static analysis (SAST), dependency scanning, and secret‑detection tools into your CI/CD pipeline. Automate these checks so that every pull request tells you if you’ve introduced a risky dependency or an insecure configuration—before it ever reaches production. 4️⃣. Continuous Code Reviews Encourage a culture of peer review focused on security. Build short checklists (e.g., avoid hard‑coded credentials, enforce secure defaults) and run them in review sessions. Rotate reviewers so everyone gets exposure to security pitfalls across the codebase. 5️⃣. Dynamic & Pen‑Test Cycles Complement static checks with dynamic application security testing (DAST) and periodic penetration tests. Even a quarterly or biannual pen‑test will surface issues you can’t catch with automated scans—like business‑logic flaws or subtle authentication gaps. 6️⃣. Educate & Empower Your Team Run regular “lunch‑and‑learn” workshops on topics like OWASP Top 10, secure cloud configurations, or incident response drills. When developers think like attackers, they write more resilient code—and spot risks early. 7️⃣. Plan for the Inevitable No system is 100 % immune. Build an incident response plan, practice it with tabletop exercises, and establish clear escalation paths. That way, when something does go wrong, you move from panic to precision—minimizing impact and restoring trust. At GrayCyan, we partner with founders (and upcoming founders that have amazing product ideas) to embed these practices as we build apps. If you’re ready to turn security from an afterthought into your competitive advantage, let’s connect. Drop a comment or send us a DM, and let’s bake trust into your next release. #DevSecOps #SecureByDesign #SecureDevelopment #DataProtection #TechStartups GrayCyan AI Consultants & Developers

𝗗𝗮𝘆 𝟭𝟬: 𝗣𝗿𝗲𝗽𝗮𝗿𝗲𝗱𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗲 We know the cost of response can be 100 times the cost of prevention, but when unprepared, the consequences are astronomical. A key prevention measure is a 𝗽𝗿𝗼𝗮𝗰𝘁𝗶𝘃𝗲 𝗱𝗲𝗳𝗲𝗻𝘀𝗲 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝘆 to anticipate and neutralize threats before they cause harm. Many enterprises struggled during crises like 𝗟𝗼𝗴𝟰𝗷 or 𝗠𝗢𝗩𝗘𝗶𝘁 due to limited visibility into their IT estate. Proactive threat management combines 𝗮𝘀𝘀𝗲𝘁 𝘃𝗶𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆, 𝘁𝗵𝗿𝗲𝗮𝘁 𝗱𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻, 𝗶𝗻𝗰𝗶𝗱𝗲𝗻𝘁 𝗿𝗲𝘀𝗽𝗼𝗻𝘀𝗲, and 𝗿𝗲𝘀𝗶𝗹𝗶𝗲𝗻𝘁 𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲. Here are few practices to address proactively: 1. 𝗔𝘀𝘀𝗲𝘁 𝗩𝗶𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆 Having a strong understanding of your assets and dependencies is foundational to security. Maintain 𝗦𝗕𝗢𝗠𝘀 to track software components and vulnerabilities. Use an updated 𝗖𝗠𝗗𝗕 for hardware, software, and cloud assets. 2. 𝗣𝗿𝗼𝗮𝗰𝘁𝗶𝘃𝗲 𝗧𝗵𝗿𝗲𝗮𝘁 𝗛𝘂𝗻𝘁𝗶𝗻𝗴 Identify vulnerabilities and threats before escalation. • Leverage 𝗦𝗜𝗘𝗠/𝗫𝗗𝗥 for real-time monitoring and log analysis. • Use AI/ML tools to detect anomalies indicative of lateral movement, insider threat, privilege escalations or unusual traffic. • Regularly hunt for unpatched systems leveraging SBOM and threat intel. 3. 𝗕𝘂𝗴 𝗕𝗼𝘂𝗻𝘁𝘆 𝗮𝗻𝗱 𝗥𝗲𝗱 𝗧𝗲𝗮𝗺𝗶𝗻𝗴 Uncover vulnerabilities before attackers do. • Implement bug bounty programs to identify and remediate exploitable vulnerabilities. • Use red teams to simulate adversary tactics and test defensive responses. • Conduct 𝗽𝘂𝗿𝗽𝗹𝗲 𝘁𝗲𝗮𝗺 exercises to share insights and enhance security controls. 4. 𝗜𝗺𝗺𝘂𝘁𝗮𝗯𝗹𝗲 𝗕𝗮𝗰𝗸𝘂𝗽𝘀 Protect data from ransomware and disruptions with robust backups. • Use immutable storage to prevent tampering (e.g., WORM storage). • Maintain offline immutable backups to guard against ransomware. • Regularly test backup restoration for reliability. 5. 𝗧𝗵𝗿𝗲𝗮𝘁 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝗰𝗲 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝘀 Stay ahead of adversaries with robust intelligence. • Simulate attack techniques based on known adversaries like Scatter Spider • Share intelligence within industry groups like FS-ISAC to track emerging threats. 6. 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆-𝗙𝗶𝗿𝘀𝘁 𝗖𝘂𝗹𝘁𝘂𝗿𝗲 Employees are the first line of defense. • Train employees to identify phishing and social engineering. • Adopt a “𝗦𝗲𝗲 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴, 𝗦𝗮𝘆 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴” approach to foster vigilance. • Provide clear channels for reporting incidents or suspicious activity. Effectively managing 𝗰𝘆𝗯𝗲𝗿 𝗿𝗶𝘀𝗸 requires a 𝗰𝘂𝗹𝘁𝘂𝗿𝗲 𝗼𝗳 𝗽𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝗺 𝗮𝗻𝗱 𝘃𝗶𝗴𝗶𝗹𝗮𝗻𝗰𝗲, investment in tools and talent, and alignment with a defense-in-depth strategy. Regular testing, automation, and a culture of continuous improvement are essential to maintaining a strong security posture. #VISA #Cybersecurity #IncidentResponse #PaymentSecurity #12DaysOfCybersecurityChristmas

Just ship it! Test in production.... It'll be ok! Shipping secure software at high velocity is a challenge that many smaller, fast-paced, tech-forward companies face. When you're building and deploying your own software in-house, every day counts, and often, the time between development and release can feel like it's shrinking. In my experience working in these environments, balancing speed and security requires a more dynamic approach that often ends up with things happening in parallel. One key area where I've seen significant success is through the use of automated security testing within the Continuous Integration and Continuous Development (CICD) pipelines. Essentially, this means that every time developers push new code, security checks are built right into the process, running automatically. This gives a baseline level of confidence that the code is free from known issues before it even reaches production. Automated tools can scan for common vulnerabilities, ensuring that security testing isn’t an afterthought but an integral part of the development lifecycle. This approach can identify and resolve potential problems early on, while still moving quickly. Another great tool in the arsenal is the Software Bill of Materials (SBOM). Think of it like an ingredient list for the software. In fast-paced environments, it's common to reuse code, pull in external libraries, or leverage open-source solutions to speed up development. While this helps accelerate delivery, it can also introduces risks. The SBOM helps track all the components that go into software, so teams know exactly what they’re working with. If a vulnerability is discovered in an external library, teams can quickly identify whether they’re using that component and take action before it becomes a problem. Finally, access control and code integrity monitoring play a vital role in ensuring that code is not just shipping fast, but shipping securely. Not every developer should have access to every piece of code, and this isn’t just about preventing malicious behavior—it's about protecting the integrity of the system. Segregation of duties between teams allows us to set appropriate guardrails, limiting access where necessary and ensuring that changes are reviewed by the right people before being merged. Having checks and balances in place keeps the code clean and reduces the risk of unauthorized changes making their way into production. What I’ve learned over the years is that shipping secure software at high speed requires security to be baked into the process, not bolted on at the end (says every security person ever). With automated testing, clear visibility into what goes into your software, and a structured approach to access control, you can maintain the velocity of your team while still keeping security front and center. #founders #startup #devops #cicd #sbom #iam #cybersecurity #security #ciso

Your defensive controls might not be as secure as you think. Over the years, I feel like I've talked to too many Security and IT leaders who were unaware of the gaps in their defensive posture. Or they believed that having multiple security tools in place automatically meant strong defensive capabilities. This "set it and forget it" mentality leads to a false sense of security, overlooking configuration or integration issues. Make time to evaluate your defensive controls—whether you conduct the assessment internally or engage experts who can provide an objective, specialized analysis. A Defensive Controls Assessment delivers a comprehensive "deep dive" into defensive stance, helping to identify gaps that often stem from insufficient or improperly configured security tools. But this isn’t just about finding what’s missing; it’s about empowering your organization to take actionable steps toward a more resilient security framework. Why is this important? ✔️ Proactively uncover vulnerabilities before threat actors do. ✔️ Align your security tools with industry best practices (MITRE ATT&CK, NIST CSF, CIS Critical Security Controls, etc.) ✔️ Save time and money by addressing gaps early. What do you gain? 🔍 A detailed analysis of your current defenses. 🔧 Identification of gaps and misconfigurations. 📈 A clear, actionable roadmap for remediation and hardening. This assessment empowers your organization with the insights needed to strengthen your defenses and reduce risk. When was the last time you evaluated your defensive controls? Make it happen... #CyberSecurity #DefensiveControls #RiskManagement #SecurityAssessment

Design a secure CI/CD pipeline for financial services Here is the step-by-step breakdown: 1: Development Phase (Shift-Left Security) This phase happens on the developer's machine before code ever reaches the main server. Local Development: The developer writes code. Pre-commit Hooks: Automated scripts run locally to catch errors early (e.g., checking for hardcoded passwords or formatting errors) before the code is allowed to be committed. Code Review: Another human developer reviews the logic to ensure quality and catch potential security flaws. 2: Build Phase (CI) Once the code is pushed, automated "Build" system takes over. 4. Source Code Scan (SAST): Scans the raw code for security vulnerabilities. 5. Dependency Scan (SCA): Checks libraries the app uses ( NPM or Python packages) to see if they have known security holes. 6. Container Image Scan: If using Docker, scans the operating system layers of the container for vulnerabilities. 7. SBOM Generation: Creates a "Software Bill of Materials"—a complete inventory list of every ingredient inside software for transparency & compliance. 3: Test Phase (Verification) The built software is now tested in a staging environment. 8. Infrastructure Testing:Verifies that the servers and networks (IaC) are configured correctly. 9. Compliance Validation:Checks if the setup meets industry standards (like PCI-DSS/HIPAA). 10. Security Testing (DAST): Tests "running" application by trying to attack it from the outside. 11. Penetration Testing:A deeper, more aggressive probe for security weaknesses. 4: Deploy Phase (CD) The software is prepared for the real world. 12. CAB: A management review to ensure business is ready for the change. 13. Approval Gates: A formal manual or automated "Sign-off" within the pipeline tool. 14. Canary Deployment: Releasing app to only a tiny percentage of users (e.g., 5%) to see if anything breaks. 15. Blue-Green Switch: Flipping the "switch" to move all traffic from the old version (Blue) to the new version (Green). 5: Runtime Phase (Operations & Monitoring) The software is live, but work isn't over. 16. Runtime Protection: Tools (like WAFs or EDRs) protect the app from live attacks. 17. Continuous Monitoring: Watching metrics & logs to ensure the app is healthy and fast. 18. Vulnerability Scanning: Regularly scanning live environment for newly discovered threats. 19. Incident Response: Having a plan & team ready to act if a security breach or crash occurs. The Governance & Compliance Layer (Bottom Section) These are the overarching rules that govern the entire process to ensure trust and safety: Segregation of Duties:Ensures the person who writes the code is not the same person who approves the release. This prevents "inside jobs." Four-Eyes Principle:Requires a minimum of two approvals for any major change,ensuring no single person can accidentally or maliciously break the system. Audit Logging:Creating an immutable trail of every single action taken Data Protection: 

API Security: 16 Critical Practices You Need to Know Drawing from OWASP guidelines, industry standards, and enterprise security frameworks, here are 16 critical API security practices that every development team should implement: 1. Authentication Your first line of defense. Implement OAuth 2.0, JWT, and enforce MFA where possible. 2. Authorization RBAC and ABAC aren't buzzwords - they're essential. Implement granular access controls. 3. Rate Limiting Had an API taken down by a simple script? Rate limiting isn't optional anymore. 4. Input Validation Every parameter is a potential attack vector. Validate, sanitize, and verify - always. 5. Encryption TLS is just the beginning. Think end-to-end encryption and robust key management. 6. Error Handling Generic errors for users, detailed logs for systems. Never expose internals. 7. Logging & Monitoring You can't protect what you can't see. Implement comprehensive audit trails. 8. Security Headers CORS, CSP, HSTS - these headers are your API's immune system. 9. Token Expiry Long-lived tokens are ticking time bombs. Implement proper rotation and expiry. 10. IP Whitelisting Know who's knocking. Implement IP-based access controls where appropriate. 11. Web Application Firewall Your shield against common attack patterns. Configure and monitor actively. 12. API Versioning Security evolves. Your API versioning strategy should account for security patches. 13. Secure Dependencies Your API is only as secure as its weakest dependency. Audit regularly. 14. Intrusion Detection Real-time threat detection isn't luxury - it's necessity. 15. Security Standards Don't reinvent security. Follow established standards and frameworks. 16. Data Redaction Not all data should be visible. Implement robust redaction policies. The key lesson? These aren't independent practices - they form an interconnected security mesh. Miss one, and you might compromise the entire system. What's your experience with these practices? Which ones have you found most challenging to implement?

A data breach will cost you $4.88 Million, on average. Yet, most companies wait until production to find vulnerabilities. That single decision multiplies the cost of fixing them by 95x. Here's what elite companies do differently: Most software vulnerabilities are introduced during coding, but companies wait until production to find them. The math is brutal: • $80 to fix during design • $240 during development • $960 during testing • $7,600 in production Beyond the direct costs, companies face: • Emergency patches disrupting operations • System downtime killing revenue • Reputational damage from breaches • Legal and compliance nightmares • Lost productivity Your developers? They're spending 13 hours per week dealing with security issues. This creates a vicious cycle: delayed features, pushed back releases, and missed market opportunities. But elite companies, have cracked the code with DevSecOps - building security from day one. Google serves as a prime example of a large enterprise implementing advanced DevSecOps practices, particularly through Google Cloud Security Operations (SecOps) and integrated tooling. The results are staggering: • 15.4% lower breach costs • 50% faster time-to-market • 60% fewer security delays Here's their exact playbook: 1. Security as Code Treat security like regular code - version controlled, tested, and deployed alongside applications. Companies doing this see 28% better compliance rates. 2. Automated Security Testing Integrate security scanning directly into development. Use both static analysis and dynamic testing to catch vulnerabilities early. 3. Developer Security Training Organizations with comprehensive security training see 70% fewer incidents. It transforms developers into security-aware builders. The fascinating part? By "slowing down" to check security early, these companies ship features 50% faster. Why? They're not constantly firefighting security issues in production. After helping hundreds of companies secure their systems, I've noticed: The best companies don't react to threats. They prevent them. This is exactly why we built our security-first development process at Yellow Systems. We help CTOs and VPs of Engineering: • Catch vulnerabilities early • Implement automated security testing • Build robust, secure applications Want to see how secure your system really is? Visit yellow.systems for a comprehensive security audit of your entire stack. You'll get a detailed report of vulnerabilities and a clear roadmap for fixing them. We've helped 100+ companies build and maintain secure applications. Let's talk about yours.

𝐌𝐨𝐬𝐭 𝐭𝐞𝐚𝐦𝐬 𝐛𝐨𝐥𝐭 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐨𝐧𝐭𝐨 𝐭𝐡𝐞 𝐞𝐧𝐝 𝐨𝐟 𝐭𝐡𝐞 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞. DevSecOps embeds security into every stage from requirements to production and back. 𝐓𝐡𝐞 𝐃𝐞𝐯𝐒𝐞𝐜𝐎𝐩𝐬 𝐋𝐢𝐟𝐞𝐜𝐲𝐜𝐥𝐞 𝟏. 𝐑𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬 • Security development guides • Trainings • Security requirements (Gap analysis) • Critical Assets Identification • Threat modelling • Privacy implementation assessment Security starts before code is written. Identify critical assets. Model threats. Assess privacy requirements. Training ensures teams know what secure looks like. 𝟐. 𝐃𝐞𝐬𝐢𝐠𝐧 • Critical Assets Identification • Threat modelling • Privacy implementation assessment • Security architecture review • Security Baseline Design phase locks in security architecture. Threat modelling maps attack surfaces. Security baseline defines minimum controls. Get design wrong and you are patching vulnerabilities forever. 𝟑. 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • Third-party software tracking • Security code review • Static code analysis Code is written with security in mind. Static analysis catches vulnerabilities before commit. Security code reviews validate logic. Third-party tracking prevents supply chain attacks. 𝟒. 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐀𝐬𝐬𝐮𝐫𝐚𝐧𝐜𝐞 • Risk based security testing • Dynamic security testing Testing is not just functional. Risk-based security testing prioritizes high-impact vulnerabilities. Dynamic testing runs against live code to catch runtime issues. 𝟓. 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 • Security operations Deployment is where security controls activate in production. Security operations monitor, detect, and respond to threats in real-time. 𝟔. 𝐑𝐞𝐥𝐞𝐚𝐬𝐞 𝐭𝐨 𝐂𝐮𝐬𝐭𝐨𝐦𝐞𝐫 • Vulnerability Management & Patching • Penetration testing • Maintenance, Monitoring, and Analytics of Audit Logs Release isn't the end. Vulnerability management patches flaws. Penetration testing finds gaps. Monitoring and audit logs track threats continuously. 𝟕. 𝐁𝐞𝐭𝐚 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 Beta testing validates security in real-world conditions before full release. Next Iteration Feedback loops from production feed back into requirements. Security findings in production inform the next design. This is continuous security improvement. The Culture Shift DevSecOps is not a tool. It is a culture where: • Developers think like attackers. • Security teams think like builders. • Operations teams think like defenders. Security is not a gate at the end. It is a practice at every stage. Most teams treat security as a checkbox. DevSecOps teams treat security as a continuous loop from requirements to production and back. 𝐖𝐡𝐢𝐜𝐡 𝐬𝐭𝐚𝐠𝐞 𝐢𝐬 𝐲𝐨𝐮𝐫 𝐰𝐞𝐚𝐤𝐞𝐬𝐭 𝐥𝐢𝐧𝐤 𝐭𝐨𝐝𝐚𝐲? ♻️ Repost this to help your network get started ➕ Follow Jaswindder for more #DevSecOps #DevOps #SecureSDLC

Cloud Security = Mastering Your CSPM for Maximum Protection Cloud environments offer agility and scalability, but implementing security measures is essential.  Cloud Security Posture Management (CSPM) offers a powerful approach to securing your cloud resources. What is CSPM? CSPM is a combination of tools and practices that helps organizations: - Identify and fix security misconfigurations in cloud resources. - Monitor adherence to security policies. - Maintain a strong overall security posture. Why is CSPM Important? - Proactive security risk management - Ensures compliance with regulations - Protects data integrity, confidentiality, and availability - Builds a more resilient and secure cloud infrastructure 6 Best Practices for Effective CSPM 1. Prevent Misconfigurations:   - Establish clear configuration management protocols.   - Track changes and maintain version history.   - Automate detection and resolution of misconfigurations.   - Implement audit logging and a remediation process.     2. Define Security Policies:   - Establish clear security policies for access control, data encryption, and compliance.   - Define how monitoring and auditing are conducted.     3. Implement Automation & Orchestration:   - Choose automation tools that integrate well with your cloud environment.   - Clearly define goals and map security policies to automation rules.   - Test automation thoroughly before deployment and have rollback plans in place.     4. Protect Against Insider Threats:   - Implement strict access controls such as Role Based Access Control (RBAC) and Multi-Factor Authentication (MFA).   - Enforce separation of duties and provide security awareness training to employees.   - Have clear procedures for revoking access when employees leave.     5. Remediate Issues Effectively:   - Use automation to remediate security issues consistently and efficiently.   - Prioritize remediation based on risk severity.   - Foster collaboration between security, DevOps, and other relevant teams.   - Regularly update CSPM tools to address emerging threats.     6. Choose the Right CSPM Tool:   - Evaluate the tool's ability to perform various security checks.   - Look for actionable insights and ideally automatic remediation for common issues.   - Choose a tool that allows for custom rules and consider vendor reputation and support.   - Conduct trials or PoCs before making a final decision. By following these best practices and implementing effective CSPM tools, you can significantly enhance your cloud security posture and protect your valuable data and resources. Found this informative? Follow Akshay Patel for more such posts! #cloudcomputing #cloud #technology #ai #aws #artificialintelligence #softskills

Penetration Testing Tip of the Day! In today's AI driven age, it is critical to differentiate yourself from purely automated testing services. Here are a few tips on how to do that: 🔶 Communication Send regular updates. Elicit feedback or questions. Humans engage with humans. 🔶 Use Tools Strategically Don't spam automated tools against every service or host just to feel productive. Spend your time, and scanning tools, wisely. For example, don't use a web enumeration tool like dirb against an open-source software - just go look up the endpoints on Github. 🔶 Read Error Messages and Pivot Use the responses you are getting from testing to guide you in your follow-up tests. For example, if you are password spraying and you start seeing account lockout messages, stop spraying. Seriously, stop it. Adjust your timing and try again, but just spamming your client with "Account Lockout" log messages makes you look like amateur at best, and like an automated scanner at worst. 🔶 Identify Impact Don't capture generic proof of concept exploits. Nobody cares that SQL injection can find the SQL version number or that XSS can pop an alert box with the number "1" in it. Use your expertise to find the important data, trigger administrative functionality, or pivot to the critical systems. If not, at least identify the controls and issues that are preventing you and report it accordingly so the client can make an informed decision. The worst thing you can leave your client thinking after reading your report is "I could have gotten the same results from a vulnerability scanner" Because if they do, then next time, they will. #security #cybersecurity #pentesting #penetrationtesting