CyberNews

What is homomorphic encryption?

Homomorphic encryption is a security technology that allows you to safely run and store your confidential data in cloud environments. As with most technologies, there are going to be some

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What’s New for April 2021

We’ve decided to try a new, “What’s New at OffSec” blog post series to share Offsec and cybersecurity industry-related news, interesting happenings, topics, thoughts and more. Admittedly inspired by Bungie’s

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AWS security and compliance overview

Amazon offers many solutions for ensuring your environment is secure and meets many industry standard compliance frameworks. By properly utilizing tools such as Cognito and Organizations, you will ensure your

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Cellular Networks and Mobile Security

Despite their seemingly endless coverage (your mileage will definitely vary), cellular network security has proven to be surprisingly robust over the years. There have been security issues over the years

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Wi-Fi security

Wi-Fi is one of those things that has become so ubiquitous that it can be extremely easy to just forget to turn it off on your mobile device before you

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Secure network protocols

For a very long time, having devices just work on a network was a feat in itself. This meant that the protocols involved didn’t necessarily need to be secure, they

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ATT&CK 2021 Roadmap

Amy L. RobertsonMar 16 · 9 min read A review of how we navigated 2020 and where we’re heading in 2021 With the monumental disruptions, challenges, and hybrid work environments

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Breaking misused stream ciphers

Encryption algorithms can be classified in a couple of different ways.  A top-level distinction is between symmetric encryption algorithms (which use the same keys for encryption and decryption) and asymmetric

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Entropy calculations

Entropy is a measure of the randomness in a system.  The more random the system, the less predictable it is and the higher its entropy. Entropy and cryptanalysis Entropy is

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Blockchain and hash functions

Hash functions are cryptographic algorithms designed to protect the integrity of data.  Hash functions have a few useful properties, including: One-way: Hash functions are one-way functions, meaning that it is

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Blockchain and asymmetric cryptography

Blockchain technology makes it possible to solve business problems in ways that were previously impossible.  A major enabler of this is the decentralization of the blockchain’s digital ledger. Blockchain’s decentralization

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Attacking block creation

Blockchain is a relatively new technology that is achieving rapid adoption. It has a number of built-in protections and incentives designed to allow the decentralized network to maintain and secure

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What is blockchain?

What is Blockchain? Blockchain is built from layers rather than in one big piece. Cryptographic algorithms and data structures are part of the lowest layer of blockchain technology. Blockchain blocks

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