Blockchain Security: Understanding 51% Attacks — PickAClass
⏱ 2h 30m 📚 25 lessons 🎧 Audio version

Blockchain Security: Understanding 51% Attacks

Gain foundational knowledge to identify and analyze critical security risks within decentralized blockchain networks.

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About this course

Blockchain technology offers robust security, but understanding its potential vulnerabilities is essential for anyone involved in decentralized systems. This course will equip you with a foundational understanding of blockchain security principles, enabling you to recognize and analyze common attack vectors, including the critical 51% attack. What you'll learn: * Understand the core security principles underpinning blockchain technology and its cryptographic foundations. * Analyze the mechanics and potential impact of a 51% attack on proof-of-work networks. * Examine vulnerabilities inherent in different consensus mechanisms, including proof-of-stake. * Learn how various security measures and network designs contribute to blockchain integrity. * Identify foundational concepts of smart contract security and common exploit patterns. * Apply critical thinking to assess the security posture of various blockchain projects. Through clear, text-based explanations and practical examples, you will progress from fundamental concepts to analyzing complex attack scenarios and defense strategies. The course begins with key terminology and foundational definitions before diving into practical security considerations. This course is designed for absolute beginners interested in blockchain technology and its security aspects, with no prior experience required. Start your journey into blockchain security today.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
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  • 🎧 Audio version included
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  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 30m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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PickAClass
Skills profile · verifiable
Document
Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Blockchain Security: Understanding 51% Attacks
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
P
PickAClass — Name Surname
Blockchain Security: Understanding 51% Attacks
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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