security

  1. Does my Electrum wallet become less secure if I keep generating seeds until I see one I like the look of?

  2. How can I stop websites running an integrated Bitcoin miner without disabling javascript altogether?
  3. Software to Interface With Hardware Wallets
  4. How to download bitaddress.org to use offline?
  5. Bitcoin is becoming CENTRALIZED and is INSECURE

  6. My friend passed away - what can I do with his wallet?

  7. Is it a 51% attack or a >50% attack?

  8. How do I know that my bitcoins are real

  9. Can my bitcoin wallet me copied or cloned?
  10. Why don't the miners just take profit from our coins and make the coin worthless?

  11. What is a double spend?

  12. How safe is it to use online wallets?
  13. Are received BTCs really mine?
  14. What would happen if every miner adds a transaction to his block that did not occur?

  15. How is a stratum connection secured?

  16. Egoistic miners combined with large transactions destroy PoW?
  17. What are the implications of a huge amount of unused hash power?
  18. Is it possible to use the same BIP39 list of seed words to create addresses for different crypto assets?
  19. is it more secure to store bitcoins on a desk top or a USB?

  20. What prevents a node from sending a different version of the blockchain?
  21. Is it possible to brute force bitcoin address creation in order to steal money?
  22. A theoretical low cost attack scenario in PoW currencies

  23. How much would it cost to execute a 51% attack?

  24. How to verify the Bitcoin core software?
  25. Eliminating all private keys records from pc
  26. If a single private key of the HD bitcoin account is compromised, is the whole HD account compromised?

  27. Safely generating Bitcoin paper wallets

  28. Querying UTXOs with random key pairs

  29. What happens if everyone discovers much faster way of solving hash function problem (mining)?
  30. Who decides what the next, correct Nonce is?

  31. BTC transation linkability?

  32. Address reuse, one address per person

  33. Store Bitcoins offline

  34. Can a Bitcoin ( or any other cryptocurrency ) be compromised with a large botnet/s?
  35. Which exchanges support U2F authentication?
  36. How to securely store Bitcoin server-side?

  37. Security risk(s) in running bitcoin core full node

  38. Security implications of regular saving into cold storage
  39. Is it better to compile bitcoin node or rather for some reason just use the official binaries?

  40. How to generate a paper wallet?

  41. Why is it safer to keep your bitcoins offline than online on Coinbase?
  42. How to make PoS system work?
  43. Zcash proposal to use checkpoints to verify monetary supply

  44. Is it safe to store all my coins on Coinbase?
  45. How to make totally secure Bitcoin transactions?
  46. Trezor Custom Mnemonic

  47. Any need for coinbase field in coinbase transaction?
  48. How is the lightning network secured against hacking and double spends?

  49. Protect against Ddos when there were few nodes

  50. How to open new wallet into Bitcoin Core and switch between?

  51. blockchain authentication

  52. What is a Finney attack?
  53. Would bitcoin be destroyed if a wealthy organization obtained a CPU majority for a sustained period?

  54. What can an attacker who controls majority or all of the full nodes do?
  55. What is crypto-proof UTXO set?
  56. What are the advantages and disadvantages of 24/7 Bitcoin trading?

  57. Why was the target block time chosen to be 10 minutes?
  58. What keeps the average block time at 10 minutes?
  59. GUI miner not working properly (slush's pool)

  60. How to keep my bitcoin safe when I move my bcash?

  61. Which blocks get to be checkpoints?

  62. Segwit2x/btc1 block header changes: wipeout protection for SPV nodes?

  63. Can a private key enumeration attack be used to steal bitcoins?

  64. Has someone compared the cost of mining vs. that of brute-forcing addresses?
  65. What would happen if a mining pool admins having majority of hash power turns evil?

  66. Blockchain IoT PoA

  67. If someone knows my bitcoin address, does this mean they can spend it or move it?

  68. method to keep private key in the open?
  69. The shortest ECDSA signature

  70. What is the security and trust model of an Opendime?

  71. about a stuck bitcoin transaction

  72. Bitcoin Core countermeasures against the "Bitcoin over Tor isn't a good idea" attacks?

  73. ECDSA x,y coordinate validity verification doesn't seem to work
  74. Securely encrypting a cold storage wallet

  75. why a website for buying bitcoins is asking for my CVC code
  76. Creating a fake transaction
  77. Sensitive information stored in contracts

  78. Why is using a simple SHA1 in a scriptPubKey to emulate a "password" a security problem?

  79. What is the safest medium on which to store my wallet/private keys?

  80. Is there an alternative to Bloom filters?

  81. Having an address without a wallet

  82. Bitcoin value vs. Supercomputing

  83. What effects would a scalable Quantum Computer have on Bitcoin?

  84. Can bitcoins be counterfeited?
  85. Can spent transactions that get pruned lead to false payment claims?
  86. What methods could a government use to shutdown Bitcoin?
  87. How can trading phisical goods in the blockchain be safe?
  88. Is creating a long password for my coinbase account enough to keep my bitcoins secure?

  89. What should we do when a 51% attack is getting near
  90. The length of the Bitcoin's private keys

  91. How would one go about acquiring the HashofThingtoSign from this old transaction?
  92. Bitcoin's disappeared from unused wallet

  93. If the PHP script and the Bitcoin wallet are on the same computer, does encrypting the link is necessary?
  94. Could miners possibly steal SegWit transactions on The Real Bitcoin?

  95. Is it safe to run bitcoind on another server
  96. To what degree can Bitcoins on a hard disk be protected against hacking?

  97. If you had the resources of a Nation-State, could you invalidate Bitcoin chain?
  98. How can I send Bitcoins via SMS?
  99. Does ad hoc adoption of private blockchains make the financial system vulnerable to tampering?

  100. How to secure new public proof of work blockchain?