El Pingüino de Mario:
Antes de APRENDER A HACKEAR debes Entender CÓMO FUNCIONA INTERNET
Antes de APRENDER A HACKEAR debes Entender CÓMO FUNCIONA INTERNET
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Antes de APRENDER A HACKEAR debes Entender CÓMO FUNCIONA INTERNET
En este vídeo vas a aprender los conceptos básicos de arquitectura web e internet, viendo el funcionamiento de las redes a día de hoy, siendo de mucho utilidad si estás empezando en ciberseguridad y necesitas unos conceptos básicos previos.
#ciberseguridad…
#ciberseguridad…
Alessandro Mattos / @Apenasam:
Déficit alto. Serviço público precário. Isenção que não se paga.
E a explicação oficial é sempre a mesma: falta investir mais.
Nunca é: erramos o mecanismo.
Nunca é: o agente econômico reagiu diferente do previsto.
Nunca é: a conta não fecha.
Sempre é: falta mais dinheiro público. Sempre...
Déficit alto. Serviço público precário. Isenção que não se paga.
E a explicação oficial é sempre a mesma: falta investir mais.
Nunca é: erramos o mecanismo.
Nunca é: o agente econômico reagiu diferente do previsto.
Nunca é: a conta não fecha.
Sempre é: falta mais dinheiro público. Sempre...
Alessandro Mattos / @Apenasam:
Falando o óbvio:
O ponto central aqui não é se misoginia é errada, isso é.
Falo sobre QUEM DEFINE o que é misoginia e com qual poder, está aí o problema que é transformado em arma.
Um crime tão aberto que especialistas não conseguem delimitar o que enquadra não é proteção, é uma ferramenta de interpretação seletiva. E ferramentas de interpretação seletiva, nas mãos de quem controla o sistema, não protegem os mais fracos. Protegem os que já estão no poder.
A contradição que você apontou co...
Falando o óbvio:
O ponto central aqui não é se misoginia é errada, isso é.
Falo sobre QUEM DEFINE o que é misoginia e com qual poder, está aí o problema que é transformado em arma.
Um crime tão aberto que especialistas não conseguem delimitar o que enquadra não é proteção, é uma ferramenta de interpretação seletiva. E ferramentas de interpretação seletiva, nas mãos de quem controla o sistema, não protegem os mais fracos. Protegem os que já estão no poder.
A contradição que você apontou co...
Alessandro Mattos / @Apenasam:
"Foreign Terrorist Arrested": A frase que mostra que o jogo mudou.
A manchete mais importante da prisão de Felipe Linares de Oliveira Dell Aquilla, conhecido como "Don", não é a prisão em si. Também não é a perseguição policial, a tentativa de fuga para o México ou mesmo as acusações que pesam contra ele.
O detalhe realmente importante está em duas palavras utilizadas pelo Departamento de Segurança Interna dos Estados Unidos:
Foreign Terrorist.
Foi assim que o governo americano apresentou...
"Foreign Terrorist Arrested": A frase que mostra que o jogo mudou.
A manchete mais importante da prisão de Felipe Linares de Oliveira Dell Aquilla, conhecido como "Don", não é a prisão em si. Também não é a perseguição policial, a tentativa de fuga para o México ou mesmo as acusações que pesam contra ele.
O detalhe realmente importante está em duas palavras utilizadas pelo Departamento de Segurança Interna dos Estados Unidos:
Foreign Terrorist.
Foi assim que o governo americano apresentou...
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 2/12 - First, what is Bitcoin Script? Every bitcoin is locked behind a small program — a set of conditions that must be satisfied to spend it. Think of it as a combination lock: the coins sit idle until someone provides the right sequence to open it.
R to @daily_btc_lore: 2/12 - First, what is Bitcoin Script? Every bitcoin is locked behind a small program — a set of conditions that must be satisfied to spend it. Think of it as a combination lock: the coins sit idle until someone provides the right sequence to open it.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 3/12 - On June 17, 2010, a user on Bitcointalk asked Satoshi about the cryptic strings visible in Bitcoin transactions — things like 'DUP HASH160 ... EQUALVERIFY CHECKSIG.' Satoshi's reply explained the entire design philosophy behind why he'd built it this way.
R to @daily_btc_lore: 3/12 - On June 17, 2010, a user on Bitcointalk asked Satoshi about the cryptic strings visible in Bitcoin transactions — things like 'DUP HASH160 ... EQUALVERIFY CHECKSIG.' Satoshi's reply explained the entire design philosophy behind why he'd built it this way.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 4/12 - The problem he'd solved: without a scripting system, every new transaction type would need its own hardcoded logic. 'It would have been an explosion of special cases,' he wrote. Script let the network evaluate any spending condition generically.
R to @daily_btc_lore: 4/12 - The problem he'd solved: without a scripting system, every new transaction type would need its own hardcoded logic. 'It would have been an explosion of special cases,' he wrote. Script let the network evaluate any spending condition generically.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 5/12 - He'd already baked in what he saw coming: 'Escrow transactions, bonded contracts, third party arbitration, multi-party signature, etc.' All of it had to be designed at the beginning, he wrote, to make sure it would be possible later. He was thinking years ahead.
R to @daily_btc_lore: 5/12 - He'd already baked in what he saw coming: 'Escrow transactions, bonded contracts, third party arbitration, multi-party signature, etc.' All of it had to be designed at the beginning, he wrote, to make sure it would be possible later. He was thinking years ahead.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 6/12 - The bitter irony: just two months after writing this, Satoshi disabled a large chunk of the opcodes he'd described. In August 2010, OP_CAT, OP_MUL, OP_DIV and roughly a dozen others were switched off. The network was too young to risk the attack surface.
R to @daily_btc_lore: 6/12 - The bitter irony: just two months after writing this, Satoshi disabled a large chunk of the opcodes he'd described. In August 2010, OP_CAT, OP_MUL, OP_DIV and roughly a dozen others were switched off. The network was too young to risk the attack surface.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 7/12 - One constraint survived intact and is fundamental: Bitcoin Script is deliberately NOT a full programming language. No loops. No recursion. Every script must terminate. A script that looped forever could cripple every node — so Satoshi made that structurally impossible.
R to @daily_btc_lore: 7/12 - One constraint survived intact and is fundamental: Bitcoin Script is deliberately NOT a full programming language. No loops. No recursion. Every script must terminate. A script that looped forever could cripple every node — so Satoshi made that structurally impossible.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 8/12 - What followed was fifteen years of careful additions. 2012: P2SH let you lock coins behind complex conditions without revealing them upfront. 2015–16: timelocks allowed 'unspendable until this date.' 2017: SegWit restructured how signature data is stored in a block.
R to @daily_btc_lore: 8/12 - What followed was fifteen years of careful additions. 2012: P2SH let you lock coins behind complex conditions without revealing them upfront. 2015–16: timelocks allowed 'unspendable until this date.' 2017: SegWit restructured how signature data is stored in a block.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 9/12 - The biggest upgrade came in November 2021: Taproot. Schnorr signatures let multiple parties merge keys into one indistinguishable on-chain from a single user's. MAST let you embed dozens of spending conditions in one transaction, revealing only the branch actually used.
R to @daily_btc_lore: 9/12 - The biggest upgrade came in November 2021: Taproot. Schnorr signatures let multiple parties merge keys into one indistinguishable on-chain from a single user's. MAST let you embed dozens of spending conditions in one transaction, revealing only the branch actually used.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 10/12 - The practical result: a 3-of-5 corporate multisig, a Lightning channel open, and a simple payment from your phone now all look identical on-chain to a passive observer. Bitcoin Script got more powerful and more private at the same time.
R to @daily_btc_lore: 10/12 - The practical result: a 3-of-5 corporate multisig, a Lightning channel open, and a simple payment from your phone now all look identical on-chain to a passive observer. Bitcoin Script got more powerful and more private at the same time.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 11/12 - Which brings us to now. OP_CAT (one of the opcodes Satoshi disabled in 2010) has been assigned BIP 347 and is being debated for restoration. It would enable 'covenants': conditions restricting not just who spends a coin but what the next transaction can do with it.
R to @daily_btc_lore: 11/12 - Which brings us to now. OP_CAT (one of the opcodes Satoshi disabled in 2010) has been assigned BIP 347 and is being debated for restoration. It would enable 'covenants': conditions restricting not just who spends a coin but what the next transaction can do with it.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 12/12 - The foundation Satoshi described that day is still there under everything. Whether to build higher on it — and at what risk — is the question Bitcoin is still answering.
Have a favorite Bitcoin history moment? Help me make sure it's in my list and drop it below 👇🧡
R to @daily_btc_lore: 12/12 - The foundation Satoshi described that day is still there under everything. Whether to build higher on it — and at what risk — is the question Bitcoin is still answering.
Have a favorite Bitcoin history moment? Help me make sure it's in my list and drop it below 👇🧡