
Blockchain Backbone of New Internet. It is the most innovative Technology.
“As revolutionary as it sounds, Blockchain truly is a mechanism to bring everyone to the highest degree of accountability. No more missed transactions, human or machine errors, or even an exchange that was not done with the consent of the parties involved. Above anything else, the most critical area where Blockchain helps is to guarantee the validity of a transaction by recording it not only on a main register but a connected distributed system of registers, all of which are connected through a secure validation mechanism.” – Ian Khan, TEDx Speaker
Blockchain solves the problem of manipulation. - Vitalik Buterin, inventor of Ethereum
Please read the important update, attached in the resource section.
Explore ledgers and distributed ledgers, including private and public ledgers, and how shared ledgers remove trusted third parties by using multiple peer nodes and replicated copies with adoption network approval.
Explore cryptography as the art of writing secret information to secure messages over untrusted channels, highlighting confidentiality, authentication, and integrity.
By the end of the session, you would have gained solid understanding of Hash Function, Cryptography, Concept of PoW & Practiced Demo on Digital Signature
Explore hash functions as one-way primitives that map any input to a fixed-size output, where changing even one bit yields a different hash, key to blockchain security.
Explore hash function properties: the output size stays fixed regardless of input, and it is infeasible to find two inputs with the same hash or to recover the original message.
Configure firewall rules to limit traffic, reduce attack surface, block spoofing, and enable intrusion detection and prevention while enforcing strong access controls and regular patches.
Note: Some Images might have got blurred in processing. Pdf Copy of Image Included for Your Reference.
Demo using open source online tool
Note: Some Images might have got blurred in processing. Pdf Copy of Image Included for Your Reference.
Note: Some Images might have got blurred in processing. Pdf Copy of Image Included for Your Reference.
Assess the target time interval for blockchain confirmations, weighing shorter blocks against slower ones while noting low double-spend risk for common point-of-sale transactions and the role of insurance-backed zero-confirmation options.
Understand mining diversity, a rotation parameter that controls how many blocks miners read before retrying, with low values increasing takeover risk and high values broadening rotation.
Explore how mining difficulty sets hash targets and governs block discovery time, adjusting after every 2016 blocks as network hashrate shifts and mining pools apply shared difficulty for shares.
Secure backups of notes and keys use cloud storage options such as Azure or Dropbox. Distribute backups across the network with no central storage for resilience.
Audit and scan your infrastructure to discover services, manage dependencies, and disable port 25. Regular auditing, backups, and OWASP secure coding practices prevent vulnerabilities.
Explain how contract state can diverge due to concurrent transactions, exposing nondeterministic outcomes and potential attacks on randomness and time stamps in blockchain contracts.
Explore how blockchain immutability preserves contract behavior via the consensus protocol, while bugs cannot be patched, risking ether loss when transferring to addresses not associated with any user.
Demonstrate how a stack size limit in a contract can be exploited by building an almost full call stack with nested calls, triggering an unhandled exception and enabling attack.
Explore Solidity type casting and call handling vulnerabilities, including re-entrancy risks from fallback mechanisms. Learn that private fields aren’t secret on public blockchains and how time commitment cryptography protects secrets.
Included 3 Smart Contact in text format for you to test and practice
Learn the basics of initial coin offerings as a crowdfunding-like digital money raise, from early examples in 2013–2014 to a 2017 surge and subsequent regulatory bans in China and Korea.
Please read the Resources Section for:
Awesome Resources
Exclusive BONUS for YOU!
Total cost of Cyber Breach is 100 Billion Dollars.
Cyber crime damage costs to hit $6 trillion annually by 2021.
The rapid growth and adoption of Blockchain Technology has open doors for many innovative solutions to make our life easier, but at the same time the bad guys are finding ways to breach into your systems.
This Course will give you an apt understanding of Blockchain Security to protect your Enterprise from bad guys.
I will begin with uncovering hard to digest blockchain concepts in a digestible way, then I will drive into Blockchain Security.
Highlight of Topics:
Section I
Introduction
Money,Legal Tender and Bitcoin
Bitcoin and Silk Road
Blockchain
Address
Timestamp
Ledger and Distributed Ledger
Proof of Work (POW), Proof of Stake (POS), Practical Byzantine Fault Tolerance (PBFT)
Bitcoin, Blockchain Series of attack
Cryptography
Cryptography : A Story of Corporate Lover
Symmetric and Asymmetric Cryptography
Hash Function
Hash Demo
Hash Properties
Proof of work (POW) Email Example
Digital Signature
Genesis Block, Merkle Tree
Mining
Blockchain Security Topics Overview
Section II
Blockchain Security:
Access Control
Blockchain Node Interaction
Hardening of Server
Firewall and Server Security (Demo for Port Scan and Finding Running Processes using open source tool included)
Network Security
Permission Management
Regulating Blockchain Parameters
Target time Interval
Mining Difficulty
Mining Diversity
Blockchain Parameters
Secure Backup of Keys
Consensus Mechanism
Contingency Plan Policy Testing and Backup
Auditing and Vulnerability Scanning
Incident Response Plan
Data Security and Data Privacy
Section III
Blockchain Attacks
Blockchain attacks types
Section IV
Smart Contract Introduction and Features
Smart Contact Security Vulnerabilities
Smart Contract Security
Demo to find Smart Contact Vulnerabilities
3 Practice Cases Studies for self practice included
Section V
ICO Introduction and Brief History
ICO Security
20+ Awesome resources for you!
**************************************************************************************************************
Student Reviews:
A unique first of it's kind course which wonderfully covers the Security aspects of Blockchain. A must watch for Enterprise driven Blockchain Developers, Enthusiast and Cyber security professionals.The presenter has in-depth knowledge of the subject and has explained it very well. The course extensively covers security from its very inception to modern cryptographically secured systems. Highly researched information's are shared smoothly in minimum required time. Highly recommended. - Vinod K
Good course for start, thanks to Mr. Prakash. - Ferdi
**************************************************************************************************************
Do:
✔ Go through all video tutorials, supplementary resources and references
✔ Highlight Audio and Video Issues that may creep in.
✔ Suggestions welcome
✔ Leave Feedback and Rating
✔ Ask questions, just don't keep it to yourself
✔ Go through the FAQ Session and Discussion Forum
✔ Get in touch for any query, help or suggestions
✔ This course will be updated regularly, please go though the updates
✔ This course will give you a high level overview of Blockchain Security
Don't:
✘ Enroll if you have issues with accent or have difficulty in understanding different accent
✘ Pirate this Course, Respect Handwork of Instructor
✘ If unwilling to ask questions and share feedback
✘ If you have difficulty with slight or unavoidable background noise
✘ If you are want to learn hands-on security
✘ If you learn security aspects of various Blockchain fabric
✘ This is not a programming course and doesn't teach you to secure your code
✘ There is no Lab Sessions or Practicals but few demos included
Awesome! :)
Let's get started....