Online security courses range from free half-day OWASP workshops to multi-thousand-dollar certification bootcamps, and price has almost no correlation with how much skill you actually walk away with. The best cybersecurity training platform for a given team depends entirely on what you're training for — a developer learning to write safer code needs a different course than an analyst studying for a certification exam.
What should you actually look for in a training platform?
Before comparing specific platforms, it helps to separate what "security training" usually means, because the category covers at least three different goals:
- Certification prep — studying for a credential like CISSP, OSCP, or Security+, usually to satisfy a hiring requirement or career milestone.
- Hands-on skill building — labs, capture-the-flag exercises, and vulnerable-application walkthroughs meant to build muscle memory for finding and exploiting (or fixing) real bugs.
- Developer-facing secure-coding training — shorter, role-specific modules meant to change how engineers write code day to day, usually tied to a specific language or framework.
A platform that's excellent at one of these is often mediocre at the others. Picking based on marketing copy alone (which tends to claim all three) is how teams end up with expensive licenses nobody uses after month two.
Which platforms are worth paying for?
A few categories consistently come up as delivering real value, based on what security teams report actually finishing and applying:
- Hands-on lab platforms (Hack The Box, TryHackMe, PortSwigger's Web Security Academy) — strong for building practical exploitation and defense skills through guided, gamified labs. PortSwigger's academy in particular is free and widely regarded as one of the best resources for learning web application vulnerabilities in depth.
- Vendor-neutral certification prep (SANS courses, Offensive Security's OSCP path) — expensive but respected, especially for roles that specifically require a credential.
- Developer-focused secure coding platforms (Secure Code Warrior, Security Journey) — built around short, role-specific exercises meant to fit into an engineering team's existing workflow rather than a standalone training day.
The honest caveat: completion rates for self-paced online security courses are low across the board. The platforms that see the best real-world results are the ones that gamify progress, tie training to actual code the team writes, or make training a scheduled part of onboarding rather than an optional link in a Slack channel.
Where can you find OWASP Top 10 training for free?
If budget is the constraint, there's genuinely good free material available:
- OWASP's own site publishes the Top 10 list itself along with cheat sheets covering specific vulnerability classes in detail — a good reference even outside a formal course.
- PortSwigger's Web Security Academy is free, comprehensive, and maps closely onto OWASP Top 10 categories with interactive labs for each one (injection, broken access control, cryptographic failures, and so on).
- OWASP Juice Shop and DVWA (Damn Vulnerable Web Application) are free, intentionally vulnerable applications built specifically for practicing exploitation of Top 10-style bugs in a legal, contained environment.
- Many cloud providers and vendors publish free introductory modules on specific categories (SSRF, deserialization, injection) as part of their documentation or academy content, including our own Academy resources on application security fundamentals.
None of this replaces hands-on practice against real code, but it's enough to build a working understanding of the Top 10 categories without spending anything.
Does training actually reduce vulnerabilities, or is scanning enough?
Training and tooling solve different problems, and treating either as sufficient on its own is a common mistake. Training changes what a developer writes in the first place — the earliest, cheapest point to prevent a bug. Scanning (SCA for dependencies, SAST/DAST for code and running applications) catches what training didn't prevent, including issues introduced by third-party code a developer never wrote. Teams that invest only in training still ship vulnerable dependencies they didn't author; teams that invest only in scanning keep reintroducing the same bug patterns because nobody learned why the last ten findings happened. The two are complementary, not substitutes — see our SAST/DAST product for how automated scanning fits alongside education rather than replacing it.
FAQ
Is a paid cybersecurity training platform worth it over free resources?
For certification prep, usually yes — paid platforms track syllabus changes and exam formats free resources don't. For general skill building, free platforms like PortSwigger's Web Security Academy are genuinely competitive with paid options.
What's the best free resource for learning the OWASP Top 10?
PortSwigger's Web Security Academy is widely considered the strongest free, hands-on option, paired with OWASP's own cheat sheets for reference.
How long does it take to see results from developer security training?
Most teams report behavior change within a few sprints if training is tied to real code review feedback, rather than delivered as a one-time session disconnected from daily work.
Should security training be mandatory or optional?
Optional training has much lower completion rates. Teams that see the best outcomes tie a baseline course to onboarding and reinforce it with periodic, short refreshers rather than one annual session.