Downdetector previously showed user reports of problems at sites including Amazon, Snapchat, Disney+, Reddit and Canva.

Videos showed unauthorized recordings echoing through Harrisburg International Airport in Pennsylvania and Kelowna International Airport in Canada.

A problem at Amazon’s cloud computing service disrupted internet use around the world. The outage on Monday took down a broad range of online services, including social media, gaming, food delivery, streaming and financial platforms.

Marcin Jakubowski is compiling a DIY set of society’s essential machines and making it open-source.

As tech companies build data centers worldwide to advance artificial intelligence, vulnerable communities have been hit by blackouts and water shortages.

The idea of gamifying all the things might have died down now that the current hype is shoving AI into all the things — but you’ve probably never seen it quite like EmuDevz, a game in w…

About 1,400 have been decommissioned.

A new WHO report warns of rising antimicrobial resistance, and researchers uncover satellite data leaks and insect surprises.

Scientific Reports - An optimized novel lightweight block cipher for image encryption

We study several problems in the intersection of cryptography and complexity theory based on the following high-level thesis. 1) Obfuscation can serve as a general-purpose worst-case to average-case reduction, reducing the existence of various forms of cryptography to corresponding worst-case assumptions. 2) We can therefore hope to overcome barriers in cryptography and average-case complexity by (i) making worst-case hardness assumptions beyond $\mathsf{P}\neq \mathsf{NP}$, and (ii) leveraging worst-case hardness reductions, either proved by traditional complexity-theoretic methods or facilitated further by cryptography. Concretely, our results include: - Optimal hardness. Assuming sub-exponential indistinguishability obfuscation, we give fine-grained worst-case to average case reductions for circuit-SAT. In particular, if finding an $\mathsf{NP}$-witness requires nearly brute-force time in the worst case, then the same is true for some efficiently sampleable distribution. In fact, we show that under these assumptions, there exist families of one-way functions with optimal time-probability security tradeoffs. Under an additional, stronger assumption -- the optimal non-deterministic hardness of refuting circuit-SAT -- we construct additional cryptographic primitives such as PRGs and public-key encryption that have such optimal time-advantage security tradeoffs. - Direct Product Hardness. Again assuming $i\mathcal O$ and optimal non-deterministic hardness of SAT refutation, we show that the ``(search) $k$-fold SAT problem'' -- the computational task of finding satisfying assignments to $k$ circuit-SAT instances simultaneously -- has (optimal) hardness roughly $(T/2^n)^k$ for time $T$ algorithms. In fact, we build ``optimally secure one-way product functions'' (Holmgren-Lombardi, FOCS '18), demonstrating that optimal direct product theorems hold for some choice of one-way function family. - Single-Input Correlation Intractability. Assuming either $i\mathcal O$ or $\mathsf{LWE}$, we show a worst-case to average-case reduction for strong forms of single-input correlation intractability. That is, powerful forms of correlation-intractable hash functions exist provided that a collection of \emph{worst-case} ``correlation-finding'' problems are hard. - Non-interactive Proof of Quantumness. Assuming sub-exponential $i\mathcal O$ and OWFs, we give a non-interactive proof of quantumness based on the worst-case hardness of the white-box Simon problem. In particular, this proof of quantumness result does not explicitly assume quantum advantage for an average-case task. To help prove our first two results, we show along the way how to improve the Goldwasser-Sipser ``set lower bound'' protocol to have communication complexity quadratically smaller in the multiplicative approximation error $\epsilon$.

A private contractor has apparently claimed responsibility for the mysterious drones that have been spotted in the skies over New Jersey in recent weeks.

There is nothing new in weaponising airwaves to shape hearts and minds across borders.

Infectious H5N1 avian influenza virus can persist in raw-milk cheeses while they are being made and for up to 120 days of aging, depending on the milk's

A robbery at the famous Louvre museum in Paris saw brazen crooks take just seven minutes to steal priceless jewellery.

Earlier this week I wrote about Sheaves as an opt-in, per-CPU array-based caching layer likely coming for Linux 6.18

The Directorate of Operations in the Central Intelligence Agency wasn’t initially a big fan of what might be its two most consequential Cold War covert actions: the delivery of Stinger missiles to the Afghan mujahedeen and QRHELPFUL, which sent books, magazines, cash, printing supplies, and other aid into Poland after the communist regime tried to smash the independent trade union, Solidarity, in December 1981.

You probably do not need us to tell you that Arsenic is not healthy stuff. This wasn’t always such common knowledge, as for a time in the 19th century a chemical variously known as Paris or E…

A massive Somali meteorite containing never-before-seen-on-Earth minerals vanished into the black market, raising ethical questions about science and ownership.

IonQ and Oak Ridge National Laboratory developed an algorithm to solve the complex unit commitment problem in power grid operations.

Three Oklahoma men involved in the group Oklahoma Predator Prevention were arrested Friday morning by members of a U.S. Marshall’s task force on felony warrants out of McLennan County, Texas. The men are charged with unlawful restraint and exposing the victim to a substantial risk of serious bodily injury.