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Unlocking eBPF power
Spiral journey over kubernetes, cloud and devops world.
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De-Anonymization via Clickjacking in 2019
This blog post is about my journey to understand the current practice of de-anonymization via the clickjacking technique whereby a malicious website is able to uncover the identity of a visitor, including his full name and possibly other personal information. I don’t present any new information here that isn’t already…
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Macs with T2, M1 chips cannot be restored to factory state without Apple
Modern Apple computers can no longer be fully used and maintained in 100% offline environments, or in ways that will reasonably ensure that the computer is…
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A grim outlook on the future of browser add-ons
Mozilla limiting users’ choice to 9 add-ons on mobile is only the latest development. Add-on support is degrading across all browsers and will continue to do so.
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Third-Party Audit of Rustls
In May and June 2020, Cure53 completed an audit of ring , webpki , and rustls . Their report ( PDF ) fully describes the audit, and makes for interesting reading.
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They told you not to reply (2008)
Breaking news, live coverage, investigations, analysis, video, photos and opinions from The Washington Post. Subscribe for the latest on U.S. and international news, politics, business, technology, climate change, health and wellness, sports, science, weather, lifestyle and more.
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Vietnam's contact tracing app broadcasting a fixed ID
Prologue Bluezone ( Android , iOS ) is a Bluetooth-based contact tracing app sponsored by the Government of Vietnam and developed by a c...
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Exceptional failure: breaking the STM32F1 read-out protection
The firmware of microcontrollers usually contains valuable data such as intellectual property and, in some cases, even cryptographic material. In order to protect the confidentiality of these assets,
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A Hidden Cost of Ransomware: Wholesale Password Theft
Organizations in the throes of cleaning up after a ransomware outbreak typically will change passwords for all user accounts that have access to any email systems, servers and desktop workstations within their network. But all too often, ransomware victims fail to grasp that the crooks behind these attacks can and…
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Security and Privacy Implications of Zoom
Over the past few weeks, Zoom’s use has exploded since it became the video conferencing platform of choice in today’s COVID-19 world. (My own university, Harvard, uses it for all of its classes. Boris Johnson had a cabinet meeting over Zoom.) Over that same period, the company has been exposed for having both lousy…
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GPG and Me (2015)
I receive a fair amount of email from strangers. My email address is public, which doesn’t seemto be a popular choice these days, but I’ve received enough inspiring correspondence over the yearsto leave it be.When I receive a GPG encrypted email from a stranger, though, I immediately get the fee...
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An important safety note about chown and symlinks (also chmod and chgrp)
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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Finding Software Bugs Using Symbolic Execution
Internet home of Raimondas Sasnauskas. Stories of my journey.
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Android | Madaidan's Insecurities
By default, Android has a strong security model and incorporates full system SELinux policies , strong app sandboxing , full verified boot , modern exploit mitigations like fine-grained, forward-edge Control Flow Integrity and ShadowCallStack , widespread use of memory-safe languages (Java / Kotlin) and more. As such…
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Firefox and Chromium
Firefox is sometimes recommended as a supposedly more secure browser because of its parent company's privacy practices. This article explains why this notion is not true and enumerates a number of security weaknesses in Firefox's security model when compared to Chromium. In particular, it covers the less granular…