Discover and read the best of Twitter Threads about #propagation

Most recents (4)

@Mario_Gibney 1/ Yeah, lemme try to draw it out. Let's assume it takes 6s for a block to reach other miners and compare 60s vs 600s block intervals for miners with 5% vs 30% of the hashrate. 6s is roughly the situation after Compact Blocks: bitcoin/#propagation
@Mario_Gibney 2/ The propagation delay is both an advantage and disadvantage: it gives the author a headstart for the next block, but also gives time for a competing block to emerge which may oust the author's block. Let's assume half the remaining HR works on the competing block.
@Mario_Gibney 3/ We can calculate the chance of finding one or more blocks in a time interval by starting with 100% and deducting the chance of finding 0 blocks. The chance to find 0 blocks in a time frame where we'd expect λ blocks is `p(0|λ) = exp(-λ)*(λ^0)/(0!) = exp(-λ)*1/1 = exp(-λ)`.
Read 16 tweets
1ère partie
du 46ème #point #presse #sanitaire #Genève

- ⚠️Bcp moins de #tests (+ d'#autotests?)
- #âge médian de 60 ans pr les hospis
- Turn-over entrée/sortie importante pr les #hospitalisations
- Durée de séjour moins longue
#Vaccination #Genève

Livraison #Moderna n'est pas arrivée avec pr csq la fermeture de #Palexpo lundi/mardi.

-Tous les RVs envoyés sont confirmés.
-Aucune annulation de RV.
-Tous ceux qui ont eu 1ère dose auront leur 2ème dose.
-RV envoyé qd on est sûr d'avoir les doses
Nouveaux "centres" de vaccination vont ouvrir:
- Un centre Ă  #Cologny
- et un nouveau #modèle (avec des #RV pris en direct auprès de sa pharmacie de quartier)
uniquement auprès des Pharmacie Populaire
(20 #officines ds le #canton)
Read 9 tweets
#quizzcovid Le coronavirus SARS-CoV-2 survit plus longtemps :
réponse : Le coronavirus SARS-CoV-2 survit plus longtemps dans le CONGELATEUR ! C’est d’ailleurs au congélateur que les scientifiques conservent les coronavirus.…
Cela pourrait expliquer la saisonnalité des coronavirus de rhume : 2 fois moins d’infections de mai à septembre que de décembre à mars
Read 5 tweets
#Campaign in tweets - @Guardicore Labs in a new tradition; we find the attacks, you get to know them and learn the attackers' tricks and techniques. This time, let's get familiarized with "Lemon_Duck", a #cryptomining campaign involving a sophisticated #propagation tool. 🍋🦆
Before we start: all scripts, binaries and IOCs are available on our github repository. In addition, malicious IPs, attack servers and domains appear on @Guadicore Cyber Threat Intelligence portal. You're welcome to take a look :)……
Lemon_Duck starts by breaching machines over the #MSSQL service or the #SMB protocol. We'll focus on the MS-SQL flow. Once inside the machine, the attacker enables #xp_cmdshell to run shell commands. It will take only a single command line to trigger the rest of the attack.
Read 12 tweets

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