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Thou Shall Not Pass: Gatekeeping Outbound TLS Connections
Announce Type: new Abstract: Despite the widespread use of Transport Layer Security (TLS), its security guarantees are frequently compromised by outdated versions and misconfigurations. To analyze this problem, we collected more than 50 million TLS handshakes over a two-week period at our research institution, Fondazione Bruno Kessler, and analyzed three server-selected parameters against the recommendations of four TLS guidelines. Our analysis shows that while the use of insecure or...
Parallel Reconstruction of Lawful TLS Wiretapping
Parallel Reconstruction of Lawful TLS Wiretapping Transport Layer Security (TLS) is the protocol involved in getting the lock icon to appear in your browser next to the URL. Under the hood it uses a bunch of really cool numbers for encryption. Some numbers are considered private and need securing; some are considered public and are fine for sharing.
Probing the Dynamics of Two-Level System Defect Ensembles via Broadband Cryogenic Transient Dielectric Spectroscopy
arXiv:2505.18263v4 Announce Type: replace-cross Abstract: Two-level system (TLS) defects in dielectrics are a major source of decoherence in superconducting circuits, yet their microscopic origin and distribution remain poorly understood. Existing circuit-QED probes access limited frequency ranges and mode volumes, restricting studies of isolated materials and interfaces. Here, we present Broadband Cryogenic Transient Dielectric Spectroscopy (BCTDS), a technique for probing TLS-hosting...
Zeroserve: A zero-config web server you can script with eBPF
zeroserve is a small, fast, zero-config HTTPS server. You hand it a tarball of a website and it serves it - over HTTP/2 and TLS 1.3, with hot reload and a tiny resident footprint. The twist is that you can drop eBPF programs into the tarball and they run on every request, in userspace, as sandboxed middleware - rewriting, authenticating, and rate-limiting requests, or reverse-proxying them to a backend when you want it to act as a gateway in front of your app.
A Post-Quantum Future for Let's Encrypt
Let’s Encrypt is committed to a post-quantum-safe Web PKI. The path we’re planning to take is Merkle Tree Certificates (“MTCs”), a new approach that adds post-quantum authentication to the web without sacrificing the speed and reliability that have made TLS universal. This post is about these plans and why we believe MTCs are worth pursuing as a key to a post-quantum future.
Unitary-Invariant Decomposition of Reducible Total Least Squares Core Problems
Announce Type: replace-cross Abstract: The analysis of a total least square problem (TLS) can be reduced to that of an associated core problem, which typically has lower dimension and improved solubility properties. Nevertheless, even a core problem may remain reducible, admitting further decomposition into irreducible component subproblems with simpler structure and better analytical properties. However, no systematic and invariant procedure is available for identifying all such component...
The Smart TV in Your LivingRoom Is a Node in the AIScraping Economy
The work at Include Security has us working with AI day in and day out (hacking it, using it, training it, etc). We’re all aware of the community-level opposition happening against datacenters, aimed at improving AI capabilities, being built recently. What you might not be aware of are the distributed efforts to train AI that could be using the devices inside your home.
Macsurf, "modern" web browser for macOS 9
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Restartable Sequences
May 31st, 2026 @ justine's web page The best kept secret at the frontier of system programming right now is the Linux 4.18+ (c. 2018) concept of restartable sequences or rseq for short. They allow you to create thread-safe data structures without locks or atomics which scale to microprocessors with many cores. It's currently only possible to use rseq on Linux using handwritten assembly code.
The LD_DEBUG environment variable (2012)
The LD_DEBUG environment variable Originally published 23 April 2012, updated 10 September 2019 (add link to troubleshooting tool), updated 18 October 2019 (moved to Jekyll), updated 3 April 2023 with links to other tools Development of large systems using many shared (dynamically) loaded libraries can sometimes lead to some frustrating bugs that are difficult to diagnose. These bugs often arise because there a few different versions of libraries on the system and the “wrong” version gets...