OWASP Juice Shop is an intentionally insecure web application for security training, awareness demonstrations, CTFs, and tool testing.
ProfessorMesser
Professor Messer offers free video training, study notes, and study group replays for CompTIA A+, Network+, and Security+.

About ProfessorMesser
ProfessorMesser provides video training and study resources for CompTIA A+, Network+, and Security+ certifications, including A+ 220-1201 Core 1 and 220-1202 Core 2. It includes course notes, study group replays, practice exams, downloadable videos, and A+ pop quizzes, along with exam objectives, registration steps, and discounted CompTIA vouchers.
Key features
- Video training for A+, Network+, and Security+ certifications
- Course notes for A+, Network+, and Security+ exams
- Practice exams for A+ Core 1, Core 2, and Security+
- Study group replays for A+, Network+, and Security+
- Downloadable training videos and courses
- Pop quizzes for A+ Core 1 and Core 2
- Covers A+, Network+, and Security+ material in one place
- Provides videos, notes, replays, practice exams, and quizzes
- Includes exam objectives and registration process guidance
- Limited to CompTIA A+, Network+, and Security+ certification topics
ProfessorMesser at a glance
- Website
- professormesser.com
- Category
- Education & Learning › Learn to Code
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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