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PLENDE

SECURE CODING TRAINING

Secure coding training: teach the team to write code we cannot break on a test

Practical training for developers led by active pentesters. We show how vulnerabilities arise in real code and how to write so you do not introduce them, with examples from your own stack.

Led by active pentestersBased on OWASP Top 10 and ASVSExamples in your language and frameworkHands-on: find and fix a vulnerability

WHY IT MATTERS

The cheapest vulnerability to fix is the one no one wrote

Most of the vulnerabilities we find on tests originate while the code is written and repeat the same patterns: missing validation, trusting input, badly designed authorization. Fixing after release costs many times more than avoiding the flaw in the first place.

A developer who has once seen their own code pattern used to take over an account will not write it again. That is why we teach on real vulnerabilities and show both the attack and the correct implementation.

COURSE PROGRAM

From OWASP vulnerabilities to secure design

01
OWASP Top 10 in practice
Injection, XSS, authorization and configuration flaws on real code examples.
02
Validation and data handling
How to safely accept, process and return user data.
03
Authentication and sessions
Secure login, session management and access control across roles.
04
Secure design and dependencies
Threat modeling, secret management and the risk of third-party libraries.

We tailor the examples and exercises to your language, framework and application type.

OUR APPROACH

We teach from the perspective of whoever attacks this code

The training is led by pentesters who break applications on tests every day. So we do not talk about vulnerability theory, we show what an attack on a specific code pattern really looks like and exactly what to change to close it.

We focus on practice. Participants find and fix a vulnerability themselves in a controlled environment, then see the same fix in the context of good design, not as a single patch.

CONTEXT

Secure code as part of compliance

Secure software development is explicitly expected by standards and regulations.

ISO 27001
Security in the development lifecycle (A.8) as a required part of the system.
Secure SDLC
Building security into the development process, not bolting it on at the end.
OWASP ASVS
A practical standard of security requirements for applications.

STANDARDS & CERTIFICATIONS

We work to recognized methodologies, not gut feeling

Every project is run by certified pentesters and based on public standards. That makes the result repeatable, auditable and comparable across vendors.

Team certifications
OSCPOSCPOffSec
OSEPOSEPOffSec
OSWEOSWEOffSec
OSEDOSEDOffSec
OSWAOSWAOffSec
OSWPOSWPOffSec
BSCPBSCPPortSwigger
CPTSCPTSHack The Box
CBBHCBBHHack The Box
CWEECWEEHack The Box
CRTOCRTOZero-Point Security
CREST CRTCREST CRTCREST
CREST CPSACREST CPSACREST
ISO 27001 LAISO 27001 LAISO/IEC
Azure Security EngineerAzure Security EngineerMicrosoft
Security Operations AnalystSecurity Operations AnalystMicrosoft
Security AdministratorSecurity AdministratorMicrosoft
OSCPOSCPOffSec
OSEPOSEPOffSec
OSWEOSWEOffSec
OSEDOSEDOffSec
OSWAOSWAOffSec
OSWPOSWPOffSec
BSCPBSCPPortSwigger
CPTSCPTSHack The Box
CBBHCBBHHack The Box
CWEECWEEHack The Box
CRTOCRTOZero-Point Security
CREST CRTCREST CRTCREST
CREST CPSACREST CPSACREST
ISO 27001 LAISO 27001 LAISO/IEC
Azure Security EngineerAzure Security EngineerMicrosoft
Security Operations AnalystSecurity Operations AnalystMicrosoft
Security AdministratorSecurity AdministratorMicrosoft
Based on
OWASP Top 10OWASP ASVS 5.0.0OWASP WSTG
Team certifications
OSCPOSWEOSEP

We share the full list of certifications and standards on request, together with a sample test scope.

HOW WE RUN IT

Training based on real code

01
Assessment
We learn the stack, application type and team level.
02
Attack
We show how a given code pattern is really exploited.
03
Fix
We write the secure version together and discuss why.
04
Exercises
Participants find and fix vulnerabilities themselves.
05
Materials
We leave checklists and guidance for everyday work.

EVIDENCE

Numbers behind every promise

Every test is run by certified pentesters, and we document the result with reproduction steps, evidence and a verified remediation path. Proof, not a promise.

500+
security tests and audits completed
5.0
average score from 10 verified Clutch reviews
20+
offensive certifications across the team
01
Certified team
20+ offensive certifications across the team (OSCP, OSEP, OSWE, CREST). Tests are run by our people, not anonymous subcontractors.
02
Manual testing
We work by hand to PTES and OWASP, chaining seemingly small flaws into a real, proven attack path.
03
Evidence, not a promise
Every finding comes with reproduction steps and a working proof. A report that holds up in front of an auditor.
04
Retest included
After fixes are deployed we confirm in writing that the gaps are closed. We do not vanish once the PDF is sent.

KNOWLEDGE

Secure coding training in practice

What secure coding training is

This is practical training for developers that teaches writing code resistant to common attacks, instead of fixing vulnerabilities after the fact. We show where security flaws most often arise and how to avoid them already at the build stage.

Instead of generic rules we work on real examples of vulnerable code and their correct versions. This way the knowledge translates straight into the team daily work, rather than staying theoretical.

What the training covers

We cover the most common classes of vulnerability, including injection, authorization flaws, unsafe data handling and weak cryptography, based on the OWASP Top 10 and ASVS. For each we show how it arises, how to detect it and how to write code that avoids it.

We tailor the content to the technology the team works in, because secure patterns differ between languages and frameworks. This makes the examples tangible rather than detached from the real stack.

Why fixing in the code is the cheapest

A flaw found while writing costs many times less than the same flaw caught after deployment or, worst of all, in an incident. Secure coding shifts vulnerability detection as early as possible, where the fix is cheapest.

Just as important, a developer who understands the attack mechanism stops repeating the same flaw in later projects. That is a lasting change, not a one-off fix.

What you get and how to weave it into the process

You get training tailored to the stack and team level, materials and examples that can be used after the workshop. We focus on the patterns that genuinely recur in your code.

The greatest value comes from weaving secure coding into the development cycle: code reviews, standards and security gates in CI. Then the knowledge from the training turns into a permanent practice.

FAQ

Common questions

Which languages and frameworks?

We match examples to your stack, most often web and backend. We confirm scope when agreeing the program.

What level?

We have tracks from secure coding basics to advanced topics for experienced teams.

Is there a hands-on part?

Yes. Participants find and fix vulnerabilities themselves in a controlled environment, not just listen.

On-site or remote?

Both formats are possible. Hands-on workshops work in either.

REFERENCES

“The project was delivered professionally and on time, with a strong grasp of both technology and business. We were impressed by their cybersecurity expertise and partnership approach.”
M
Mateusz Widenka
Head of Delivery, Order Group
Clutch★★★★★5.0 · 10 reviewsRead all reviews on Clutch

FIRST STEP

Start with a free consultation

Tell us what you want tested. Within 24 hours you get a proposed scope and next steps. You talk to a consultant who understands the technical side, not a salesperson.

Get in touch
No obligation · we reply within 24 h · your data stays confidential
Methodology
PTES · OWASP
Team
20+ certifications
Rating
5.0 on Clutch
What you get
A scope proposal matched to your risk
A report with evidence and reproduction steps
Remediation priorities by real impact
A retest after fixes are deployed
Asia, ElementricaKacper, ElementricaGrzesiek, Elementrica
A member of our team runs the call, and we reply within 24 hours. No bots, no call center.