Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities

$3,465

  • 3 days
  • Onsite
  • 12 people max.
Ref: ORB871
12 people max.
$3,465
In-company rate: from $6,290 for the whole team
On-site and certification exam on quote
3 days
Onsite

Don't let this gap widen

Why this program matters

  • Without mastering Log4j vulnerabilities, your Java applications become easy targets for attacks like Log4Shell, exploited in more than 3 billion attempts in just a few days.

  • 70% of Java security incidents stem from misconfigured Log4j, generating breaches that cost an average of 4.5 million euros per event according to IBM.

  • A single flaw exposes your company to massive data losses, GDPR fines up to 4% of revenue, and operational paralysis lasting several weeks.

  • Every month without securing it heightens the risks, threatening your career and your organization's business reputation.

Célian Lebacle, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

40,869 programs · 25 countries

  • Aptar
  • ArcelorMittal
  • Equans
  • EDF
  • Ubisoft
  • Microsoft

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Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Java Applications training objectives

  • Understand the complete functioning of the Log4j library
  • Master Log4j configuration for performant and secure logging
  • Identify, assess, and correct Log4j-specific vulnerabilities
  • Implement best practices for log management in production environments
  • Write logging policies compliant with security requirements

Program

Java Applications curriculum: 3 modules over 3 days

Module 1 : Introduction to Log4j and Basic Concepts

History and roles of logging in Java. Presentation of Log4j: architecture, API, main classes and dependencies. Quick setup on an existing project. Main differences with other frameworks (SLF4J, Logback). Practical exercises on implementing standard logging.

Module 2 : Advanced Configuration and Best Practices

Exploration of configuration files (XML, properties, YAML). Loggers, Appenders, Layouts: customizing format, hierarchy and log levels. Log rotation, archiving, and performance management. Practical exercises: hot configuration, log monitoring, application debugging using Log4j. Introduction to asynchronous logging.

Module 3 : Security and Vulnerabilities: the Log4Shell Case

Detailed analysis of Log4j vulnerabilities (Log4Shell CVE-2021-44228 and recent incidents). Understanding exploitation of flaws: controlled demonstrations. Remediation strategies and patches. Hardening configuration and applying patches. Log analysis and attack detection. Defining a logging policy compliant with GDPR and legal requirements.

How Java Applications skills are assessed

  • Quizzes to verify learning at the end of each day
  • Case study: securing a vulnerable system
  • Final evaluation by configuration audit and writing an action plan

How the Java Applications course is taught

  • Alternating theoretical courses and practical workshops
  • Hands-on situations based on real incidents
  • Detailed course materials and best practices reference

Java Applications training: access and practical arrangements

The Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Our method

How Learni guarantees the quality of your Java Applications training

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you
Enroll and offer a kit
FAQ

Java Applications: frequently asked questions

What can participants do after Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training?+
They can understand the complete functioning of the Log4j library, master Log4j configuration for performant and secure logging and identify, assess, and correct Log4j-specific vulnerabilities. Those are the stated objectives of the Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program at Advanced level, checked by the end-of-session assessment.
What does the Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program cover, day by day?+
Day 1: Introduction to Log4j and Basic Concepts. Day 2: Advanced Configuration and Best Practices. Day 3: Security and Vulnerabilities: the Log4Shell Case. The Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program runs over 3 days, delivered on site.
How is Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training assessed?+
Assessment relies on quizzes to verify learning at the end of each day, case study: securing a vulnerable system and final evaluation by configuration audit and writing an action plan. Learni issues a completion certificate together with the individual assessment report at the end of the Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities program, which an L&D team can file as evidence.
How much does Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training cost per participant?+
Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training costs $3,465 per participant. For an in-company team, the flat rate starts at $6,290 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training take?+
3 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training?+
Mastery of the Java programming language and basic knowledge of IT security.
Is a certificate issued after Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for Training: Securing Java Applications: Mastering Log4j and Its Vulnerabilities training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
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