Subnetting IPv4 – TL;DR
Estimated difficulty: 💜💜💜🤍🤍
Every time I attend a course and someone tries to explain subnetting to me, they pretty much un-teach me it and I have to go away and re-learn how it works.
What in the APK?!
Estimated difficulty: 💜💜💜🤍🤍 This week I wanted to write the first post of a mini mobile application reverse engineering series! There has been a lot of attention in the news about apps such as TikTok and the COVID-19 NHS track and trace app, where they have been shown to have certain security flaws. By writing …
Locked Out: What is Ransomware?
Estimated difficulty: 💜🤍🤍🤍🤍 Ransomware can be a costly attack to organisations of all sizes. Recently Garmin fell victim to a ransomware attack, with reported ransoms of up to US$10 million in exchange to reinstate company files. According to a The State of Ransomware 2020 by Sophos, the global average cost to remediate a ransomware attack …
Binary, Hex, Base 64, Oh My!
Estimated difficulty: 💚💚💚 Hey Securiteenies! This week we’re covering a few common numerical systems in the technology world – mostly because they’re really cool, but also because you might come across these in the wild sometime and it’s useful to know how they work and understand what they mean. We’ve tried to keep this post …