A message from our CEO about the future of Stack Overflow and Stack Exchange. Read now.

Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. It only takes a minute to sign up.

Sign up to join this community

Anybody can ask a question

Anybody can answer

The best answers are voted up and rise to the top

Explore our Questions

more tags

Active Hot Week Month

1

vote

3

answers

143

views

Is it safe to create a Bitcoin account for another party? Is this a scam?

security fraud

modified Jan 18 at 2:37 Murch♦ 42.2k

1

vote

3

answers

281

views

How can Bitcoin be stolen?

security currencies theft traceability

modified Jan 10 at 15:05 Community♦ 1

0

votes

4

answers

88

views

How the blockchain knows that its been tampered with?

blockchain security block

answered Jan 6 at 4:25 Johnny Good 1

2

votes

3

answers

2k

views

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

address security

modified Jan 3 at 13:31 GenoRSmith 1

5

votes

4

answers

477

views

I just lost 1.36275883 ($313), and I don't know how it happened or how to prevent it again

wallet security hacking

answered Dec 27 '19 at 20:58 tempo 81

9

votes

2

answers

1k

views

What happens if my wallet gets “hacked” and my BTC is stolen?

security theft

answered Dec 27 '19 at 20:12 tempo 81

2

votes

1

answer

23

views

Is it possible to brute force the Secure Element of Ledger Nano S?

security ledger nano

answered Dec 27 '19 at 3:39 Andrew Chow♦ 41.9k

5

votes

2

answers

174

views

Can signature be re-used to cash out everything in the address?

transactions security signature transaction-input

modified Dec 26 '19 at 11:41 Ugam Kamat 5,683

2

votes

1

answer

142

views

Lightning network hub security?

security lightning-network

modified Dec 25 '19 at 16:01 Community♦ 1

1

vote

1

answer

27

views

How to add a second user with SSH access to my Ubuntu PC running Bitcoin Core?

security nodes bitcoin-cli authentication

answered Dec 25 '19 at 4:51 Raghav Sood 12k

4

votes

2

answers

207

views

How can multifactor authentication be used when there needs to be two people with access?

security exchanges authentication two-factor multi-factor

modified Dec 24 '19 at 8:53 SentientFlesh 25

0

votes

1

answer

3k

views

Private key to mnemonic words, is it safe?

security private-key mnemonic-seed bip

modified Dec 21 '19 at 2:01 Community♦ 1

0

votes

2

answers

33

views

What are some potential scenarios that a state actor can harm bitcoin if they control more than 51% of the hashing power?

security attack majority-attack market china

modified Dec 19 '19 at 1:43 chytrik 10.8k

8

votes

3

answers

544

views

Can nLockTime TX be used to flood Mempools?

security locktime

answered Dec 18 '19 at 19:45 Murch♦ 42.2k

Browse more Questions

Bitcoin Stack Exchange works best with JavaScript enabled