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Etiqueta: distributed ledger

computer security, Distributed Ledger, Hacking, Malware, segurancainformatica

Crypto-jacking via ARP Poisoning Attack on Wi-Fi Networks

12 Janeiro, 2018
crypto-miner-arp-poisoning

Hackers are using more sophisticated techniques to mine cryptocurrency in an unauthorized manner. They currently using ARP Poisoning to inject malicious code into all web requests on a Wi-Fi network.

computer security, Distributed Ledger, Hacking, segurancainformatica

Hackers are attacking Portuguese websites with crypto-jacking. Are you safe?

8 Janeiro, 2018
dinheirovivo

Crypto jacking detected in Portuguese website. This article refers that Portuguese websites are using this type of resources to mine the cryptocurrency Monero. One of the cases already detected was Dinheiro Vivo, a very well-known Portuguese news website.

Distributed Ledger, segurancainformatica

Blockchain is becoming obsolete — The future is Hashgraph

29 Dezembro, 2017
blockchain-obsolete

A blockchain começa a ficar obsoleta comparativamente com o hashmap. O hashmap permite uma velocidade de 250.000 vezes mais rapido que a blockchain, mais barato, e a prova de trabalho (PoW) não interfere na ordem como as transações são validadas e armazenadas nos blocos da cadeia.

Digital Identity, Distributed Ledger, segurancainformatica

A blockchain irá substituir as palavras-passe?

28 Dezembro, 2017
encryption

As palavras-passe são ainda a parte nevrálgica dos sistemas e continuam a ser também o método mais utilizado na sua autenticação. Parece que elas nunca mais…

computer security, Distributed Ledger, segurancainformatica

A Revolução pós-Internet? Blockchain

7 Setembro, 2017
blockchain-technology-

A blockchain apresenta-se como uma tecnologia totalmente revolucionária e que mudará para sempre a forma como os negócios operam. Esta é uma grande mudança. A…

computer security, Distributed Ledger, segurancainformatica

Blockchain and Merkle Tree

3 Agosto, 2017
blockchain_transactions_diagram_1

Blockchain O bitcoin é o nome de batismo de uma criptomoeda que teve um enorme impacto quando foi libertada na Internet e também todo o…

computer security, Distributed Ledger, segurancainformatica

A Revolução da Blockchain – A Tecnologia do Futuro

19 Julho, 2017
Blockchain-Image-3

Desde o ínicio do ano de 2009 que uma moeda virtual tem vindo a marcar a diferença no horizonte dos pagamentos digitais. O principal ingrediente…

computer security, Distributed Ledger, segurancainformatica

Infográfico: Modo de funcionamento do blockchain

4 Julho, 2017
bockchain

O blockchain representa uma das maiores inovações de segurança dos últimos tempos. Segue um infográfico que apresenta o seu modo de funcionamento.   Pedro Tavares Pedro…

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    Author – Founder

    pedro tavares

    Pedro Tavares is a professional in the field of information security working as an Ethical Hacker/Pentester, Malware Researcher and also a Security Evangelist. He is also a founding member at CSIRT.UBI and Editor-in-Chief of the security computer blog seguranca-informatica.pt.

    In recent years he has invested in the field of information security, exploring and analyzing a wide range of topics, such as pentesting (Kali Linux), malware, exploitation, hacking, IoT and security in Active Directory networks.  He is also Freelance Writer (Infosec. Resources Institute and Cyber Defense Magazine) and developer of the 0xSI_f33d – a feed that compiles phishing and malware campaigns targeting Portuguese citizens.

    Read more here.

    Newsletter

    #0xSI_f33d

    The Portuguese Abuse Open Feed

    si_f33d
    @ VirusTotal offical ingestor

    Add a new phishing / malware campaing into 0xSI_f33d

    Infographic – Threat Report Portugal Q2 2022

    si_f33d

    Download [PDF] or [PNG]

    Taking the bait: The modus operandi of massive social engineering waves impacting banks in Portugal

    clickthebait

    The new maxtrilha trojan is being disseminated and targeting several banks

    maxtrilha

    The clandestine Horus Eyes RAT: From the underground to criminals’ arsenal

    qbot

    A taste of the latest release of QakBot

    qbot

    Javali trojan weaponizing Avira antivirus legitimate injector

    javali

    Anubis Network – The evolution of the Phishing schema

    anubis

    Threat analysis: The emergent URSA trojan impacts many countries using a sophisticated loader

    ursa

    In-depth analysis of a trojan banker impacting Portugal and Brazil

    trojan_portugal_and_Brazil

    Grandoreiro malware May 2020 – Portugal

    The updated Grandoreiro Malware equipped with latenbot-C2 features in Q2 2020 now extended to Portuguese banks

    grandoreiro_portugal_2020

    Brazilian trojan banker is targeting Portuguese users using browser overlay

    predictions

    Trojan Lampion – Portugal

    predictions

    New release of Lampion trojan spreads in Portugal with some improvements on the VBS downloader

    lampion

    Banking Phishing Portugal

    Banking Phishing | Targets Portugal, Spain, Brazil and Chile | From Brazil | Infection process

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