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Ledger officially tweeted that the Nano S firmware 1.5.5 update is now available and contains new algorithms and security updates, recommending that Nano S users update to that version.

Ledger officially tweeted that the Nano S firmware 1.5.5 update is now available and contains new algorithms and security updates, recommending that Nano S users update to that version.

Dynamic . . . Cardano Yoroi Wallet is integrated with ledger Nano S.

In December, researchers claimed they were able to attack Trezor One, Ledger Nano S and Ledger.

According to the dimensionality reduction security laboratory (johnwick.io), hackers launched a denial of service (DoS) attack on the well-known wallet Electrum server. The hackers used a botnet of more than 140,000 computers to attack Electrum nodes and deployed malicious nodes at the same time . When users connect to these malicious nodes and use the old version of Electrum to send transactions

Bitcoin desktop wallet client Electrum has released a 4.0 beta version, adding several important updates, including support for the Lightning network, nearly a year after the previous version of Electrum, 3.3.8 (last July). In the 4.0 beta version, Electrum mainly added features such as PSBT (partially signed Bitcoin transactions), Lightning Network, watchtowers (暸 watchtowers) and Submarineswaps (subliminal switching). (Github)

According to The Next Web, the attackers even implemented their own Electrum servers, which hosted the attacked Electrum.

Another set of data shows that the number of unconfirmed transactions in the Ethereum network exceeds 10,000, which is very close to its maximum trading rate (570,000/24 hours). By comparison, the number of unconfirmed transactions in EOS accounts for only 0.03% of total capacity (325,000/24 hours)

The biggest challenge for long tails is the concentration of consumption, resulting in little commercial value for long tails. Long tails don't help businesses make a good profit, because the tail can be extremely flat, full of all kinds of cold products, and these products are only the occasional pastime of consumers, in fact, consumer enthusiasm for popular products is always growing, at least for film and television and variety, only to do the head can make money.

EL implements: Jasper/Jboss (tomcat-jasper-el/jasper-el/jboss-el)

Electrum Wallet is one of the most popular Bitcoin wallets and has been around for several years. However, Electrum wallet users often rely on Electrum servers, which presents some security and privacy trade-offs. If you use electrum personal servers, Electrum wallet users can connect locally to their own private servers, enjoying the convenience of Electrum without any trade-offs.

Extensible state storage: account model vs. UTXO (unused transaction output) model, different rental schemes, raw Merkel branch witness vs. SNARK/STARK compression vs. RSA accumulator, sparse Merkel tree vs. AVL tree vs. usage-based imbalance, etc. (in addition, there are different scenarios for verifying state transitions)