OWASP Top 10 is the most widely-referenced security checklist in the world. If you build web applications in India in 2026 — whether you are at a startup in Bengaluru or a development agency in Hisar — you cannot ignore it. This article walks through all 10 vulnerabilities of the current OWASP edition with plain-English explanations, real-world examples, and code-level defenses.
A01:2026 — Broken Access Control
Number one for a reason. Vertical (student accessing admin pages) and horizontal (user A reading user B's invoice) access flaws are everywhere. Defense: deny-by-default, server-side authorization checks on EVERY endpoint, never trust the client to send the right user ID.
A02:2026 — Cryptographic Failures
Storing passwords in plaintext, using MD5/SHA1, hard-coded encryption keys in source, weak TLS configs. Defense: bcrypt/argon2 for passwords, TLS 1.3, secrets in a vault never in git, certificate pinning for mobile apps.
A03:2026 — Injection
SQL, NoSQL, LDAP, OS command, expression-language injection. Read our SQL injection deep-dive for examples. Defense: parameterized queries, strict input validation, output encoding for any reflected data.
A04:2026 — Insecure Design
Architectural mistakes — missing rate limits on OTPs, no anti-automation on signups, insecure default trust between services. Defense: threat modeling at design phase, abuse cases for every feature, security stories in every sprint.
A05:2026 — Security Misconfiguration
Default credentials, verbose error pages, unnecessary services running, debug endpoints in production. Defense: hardened base images, infrastructure-as-code with security review, regular configuration audits.
A06:2026 — Vulnerable and Outdated Components
Log4Shell, ImageMagick, OpenSSL bugs — all delivered via dependencies. Defense: SCA tools (Snyk, Dependabot), monthly dependency review, abandon unmaintained libraries.
A07:2026 — Identification and Authentication Failures
Credential stuffing, weak password policies, missing MFA, predictable session IDs. Defense: MFA mandatory, breach-password APIs (HIBP), cryptographically random session tokens, account lockouts.
A08:2026 — Software and Data Integrity Failures
Unsigned plugins, insecure deserialization, CI/CD pipelines that pull untrusted artifacts. Defense: subresource integrity, package lock files committed, signed artifacts, pipeline-as-code with reviews.
A09:2026 — Security Logging and Monitoring Failures
If you can't see the attack, you can't stop it. Defense: log auth events, log access-control denials, ship to a SIEM, alert on anomalies. Train SOC L1 to triage these. SOC career path.
A10:2026 — Server-Side Request Forgery (SSRF)
Application makes an HTTP request controlled by the attacker — often to internal cloud metadata endpoints. Devastating in AWS / Azure environments. Defense: allow-list of outbound URLs, block private IP ranges, use IMDSv2 on AWS.
How Indian Companies Should Use This List
- Print the list. Tape it to the engineering wall.
- For every new feature, ask "which Top 10 risks does this introduce?"
- Schedule a yearly external VAPT mapped to this list.
- Train developers — most don't know what SSRF or insecure deserialization actually look like in code.
- Make security a sprint goal, not a release-blocker fight.
Train at Cyber Defence Academy, Hisar
Hands-on labs, real-world projects, government-of-India trusted institute. Online + offline batches across Haryana. Placement support, lifetime access to materials.
FAQs
How often does OWASP update the Top 10?
Roughly every 3–4 years. Re-read the latest edition any time a new one drops.
Is the OWASP Top 10 enough for security?
It's the floor, not the ceiling. Combine with OWASP ASVS for thoroughness.
Where can I practice these in a lab?
OWASP Juice Shop, PortSwigger Web Security Academy, and HackTheBox have OWASP-mapped challenges.