Homework on Security & Immutability - Questions

Blockchain and Bitcoin 101
#61
  1. A decentralized network increases security because in order to rewrite the database an ill-intentioned party would need to take over the consensus majority of the network, and without such access the database can’t be altered
  2. A central authority can be corrupt, or become corrupt, or have corrupt members, or have access vulnerabilities, or be hacked, and it is not forced to be public in its actions, and its actions can’t be verified even if they present evidence, since it could have been falsified.
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#62

1.by confirming action with the network.
2.you might never find out the truth of whats going on

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#63

  1. A decentralised network is trustless.This means that you don’t have to trust a central authority or organisation with the management of your transactions and data. This increases the security of your transactions and data, because all operations are performed within a single global infrastructure which runs according to a pre-established protocol of proven-to-work mathematical principles.

  2. When the security of data and transactions depends on the decisions and governance of a central authority or organisation, there is a higher risk of inconsistencies, errors, loss, theft, or malicious attacks (e.g. hacking) occuring. This is due to risk factors such as human error, personnel and policy changes, manipulation for self-interest, mismanagement, and corruption.

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#64

  1. A decentralized network increase security because you are not trusting a third party, you are trusting math. It’s a global hack-proof database.

  2. It’s dangerous to trust a central authority for security because a central data base is a sweet honeypot for hackers.

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#65

  1. How does a decentralized network increase security?
    nodes will verify transactions enabling a trust-less, authenticated network

  2. Why is it dangerous to trust a central authority for security?
    They are controlling their data in a silo and their data cannot be verified

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#66
  1. How does a decentralized network increase security?

By distributing the ledger you remove a central point of failure from the network. If a security risk arises in one place you still have 99% of the network keeping everything safe.

  1. Why is it dangerous to trust a central authority for security?

Because you have a central point of failure. When sh*t eventually happens you’re screwed…

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#67

1- By permitting everyone in the network to be able to verify any transactions, and bringing transparency since if a network is centralized any change on it would be made by a restricted person or Organization.
2- Because all the data would be on the power of the central authority, or and they could do whatever they want with it, any attacks on the central could result in the lost of the entire information on it.

#68
  1. Due to consensus, there is no single point of failure.
  2. Central authorities can hacked!
#69
  1. How does a decentralized network increase security?
    Decentralized network increase security by handling data in to a globally distributed data base instead of a central one. In doing so it alleviates the problem of, single point of attack or putting un necessary(too much) trust on one entity.
    2.Why is it dangerous to trust a central authority for security?
    The very nature of some of humanity always has always been tied up with greed and corruption and history has thought us what happens when we put our full trust on single entity- be it private or governmental. Be safe using blockchain than sorry.
#70
  1. How does a decentralized network increase security? A decentralized network increases security based on the global database blockchain which allows a community to build on it using one standard, one database, one solution and one infrastructure. For example, in Bitcoin, we trust the global blockchain because it is built on math and a protocol for value under one global standard.
  2. Why is it dangerous to trust a central authority for security? It is dangerous to trust a central authority because a central authority can easily become corrupted because there is only one entity that is in charge. Furthermore, there is a greater chance for a 3rd party to be influenced to take a less expensive solution to store data, which could allow for data to be stolen and used for unscrupulous purposes by a hacker.
#71
  1. Because you trust the math and the global netwerk, not individuals.
  2. You have to trust individuals
#72

  1. Decentralized network increase security because it eliminates the need for one central authority. Making it harder to attack the network because it is spread out.

  2. Because if the central authority is compromised everything is compromised.

#73
  1. How does a decentralized network increase security? There no need to trust a single actor to keep the information safe. Also - there is not a single target to go after
  2. Why is it dangerous to trust a central authority for security? The more valuable the information the more they will be a target. “Bad guys” are constantly evolving and trusting a single source will allow that source to eventually fail.
#74

1.+2.) A decentraliced network cannot be hacked, shut down and stop working as easy, because there is only one single point of failure, or one point to attack.

#75

  1. They allow higher degree of certainty that the network will continue to exist because the cryptography is protected by a network of many entities rather than a single entity that is at risk of “shutting down” or “hacked”. The more nodes, validators, miners, etc., are in the network the more secure it become and the more unchangeable or “immutable” the data becomes.

  2. Central authorities can make mistakes, allow accidental or intentional breaches in security since they are a single point of failure. Any central authority is also prone to failure and/or corruption of data as has happened many times in the past.

#76
  1. How does a decentralized network increase security?
    In decentralized network you are not trusting one central entity that can unilaterally decide on actions in the network. Instead in a decentralized network there is nobody to trust and therefore there is no single point of failure.
  2. Why is it dangerous to trust a central authority for security?
    Because a central authority can decide without an external agreement. A central authority has total power and can act against you without your permission or knowledge.
#77
  1. Security is increased in a decentralized network by reducing the chance of forged/altered records. also if one or more sources of the data is off line or removed the others are available and verifiable.
  2. It is far easier to corrupt a single source that it is to corrupt a large group with protocols like bitcoin has. A central authority has no outside verification of it’s data. We see this in media quite often where a major news outlet asserts that something is true but later turns out to be untrue.
#78
  1. You don’t have to trust anybody, math and protocol fixes this.
  2. you can’t trust the authority bcuz they can leak the info that is stored, easier to hack.
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#79

Homework on Security & Immutability - Questions

1. How does a decentralized network increase security?
By a) granting several copies of the up to date ledger are available;
b) the more decentralised, the harder it is for an attack on the ledger to be economically viable

2. Why is it dangerous to trust a central authority for security?
Because the central authority may fail in keeping the data protected, and moreover because a central authority can be corrupt, politically misused, has the power to alter data, power to deny access, and abuse its users by any creative means

#80
  • How does a decentralized network increase security?
  • Why is it dangerous to trust a central authority for security?

A decentralized network cannot be manipulated as all nodes have to verify.
A central authority doesn’t need consensus to verify and can simply alter info. Also it can be easily hacked.

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