Morning.dev

DEV Community • 2026-05-13 21:00

Handling Dirty Frag and Copy Fail with Puppet

Do you know which of your Linux servers are vulnerable right now? Two critical Linux kernel vulnerabilities are being actively exploited. Dirty Frag targets the IP fragment reassembly modules that almost every Linux server has loaded by default. Copy Fail targets the AF_ALG cryptographic subsystem's AEAD interface. Both can allow an attacker to gain escalated local privileges, and both ...

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8m read

DEV Community • 2026-05-13 20:59

How a 1-in-3 BFT bug led me to wall-clock-bucketed DAG rounds

About a year ago, the consensus runtime I'd been building started doing something annoying. The setup was straightforward: a Tendermint-style chained BFT with five masternodes finalising blocks proposed by a rotating set of lightnodes, partitioned into committees of 5-10 nodes each (we call them "groups"). The design was textbook. The implementation worked fine on a single machine, fine on two ma...

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10m read

DEV Community • 2026-05-13 20:55

Agents need control flow because the loop pays the bill

last week a post called "agents need control flow, not more prompts" went around hn (thread 48051562, 588 points, 293 comments). the argument is an engineering one: open-ended prompt loops are unpredictable, deterministic harnesses aren't, so wrap the agent in a flowchart and feed it one step at a time. one commenter described doing exactly that — "wrapped the agent in a loop that kept feeding it ...

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6m read

NASA-Supported Space Tech Advances Earthly Construction

newest submissions : multi • 2026-05-13 20:53

NASA-Supported Space Tech Advances Earthly Construction

submitted by /u/twofive7 to r/technology [link] [comments]

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1m read

DEV Community • 2026-05-13 20:53

We built a real psql terminal in the browser. Here’s what made it unexpectedly hard.

A PTY-backed PostgreSQL console running in the browser using reverse WebSockets, Redis Streams, and xterm.js — built under NAT constraints and production realities. We needed a real PostgreSQL terminal in the browser. Not a SQL editor. Not a query API. A real psql session with full terminal semantics. That immediately meant: PTY required stateful process required bidirectional streaming req...

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5m read

newest submissions : multi • 2026-05-13 20:51

Alabama woman sues alleging she gave birth on prison floor as guards watched

submitted by /u/Samski877 to r/news [link] [comments]

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1m read

DEV Community • 2026-05-13 20:50

Try it

I Cut Coding Agent Context Usage by 22–45% by Killing Context Bloat Sam Sam ...

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1m read

The Vonage Dev Discussion: Defining what an API is

DEV Community • 2026-05-13 20:49

The Vonage Dev Discussion: Defining what an API is

This week we kicked off the first in a series of office hours. Our office hours are a judgment-free space for developers to come and ask questions about using Vonage – and get an answer live from an actual human! Being able to ask questions without fear of judgment is so important for beginner engineers and being able to answer those questions is equally important for senior engineers. Have you e...

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1m read

ECB warns banks about cyberattacks using Antrophic's Mythos AI model

newest submissions : multi • 2026-05-13 20:48

ECB warns banks about cyberattacks using Antrophic's Mythos AI model

submitted by /u/boppinmule to r/technology [link] [comments]

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1m read

DEV Community • 2026-05-13 20:48

How I Built a Serverless Scanner to Find (and Kill) Zombie AWS Resources

Every AWS account has zombies. Not the fun kind. The kind that silently drain your budget while nobody's looking. An EBS volume that was attached to an instance you terminated six months ago. A NAT Gateway routing traffic for a VPC that no longer has any workloads. A Transfer Family SFTP server that was set up for a migration, used once, and forgotten. I've audited enough accounts to know this i...

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9m read

DEV Community • 2026-05-13 20:47

5 open-source MCP servers I built for EU agriculture, pharma, climate & law

I have been building Model Context Protocol (MCP) servers for EU domains. Here is the full collection. 1. CropProphEU — EU Crop Intelligence https://github.com/DasClown/CropProphEU An MCP server for crop yield forecasts, market values, and risk analysis across EU agriculture. Integrates soil data, climate models, and market prices. 2. drug-pipeline-mcp — Pharmaceutical R&...

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1m read

Understanding Reinforcement Learning with Neural Networks Part 4: Positive and Negative Rewards

DEV Community • 2026-05-13 20:46

Understanding Reinforcement Learning with Neural Networks Part 4: Positive and Negative Rewards

In the previous article, we began the process of guessing the ideal output. Let us continue with the same example. Suppose we receive a small number of fries. Since our hunger level is 0, this is actually a good outcome. In this case, we should assign a reward of 1. Now consider the opposite situation. Suppose we receive a large order of fries. Since we are not hungry enough to eat all t...

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1m read

newest submissions : multi • 2026-05-13 20:44

‘Irresponsible’: backlash as Utah approves datacenter twice the size of Manhattan

submitted by /u/mintylips to r/news [link] [comments]

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1m read

Building a Cross-Country Payroll API: The Weird Problems I Didn’t Expect

DEV Community • 2026-05-13 20:41

Building a Cross-Country Payroll API: The Weird Problems I Didn’t Expect

Building a Cross-Country Payroll API: The Weird Problems I Didn't Expect webdev #fintech #ai #javascript Last year, while trying to estimate the real take-home pay of a potential job abroad, I started building my own German payroll tax engine. At first it was a simple question: "What would actually be left from the salary after taxes and deductions?" But once the German ...

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5m read

DEV Community • 2026-05-13 20:40

I Built fintech-fraud-sim: A TypeScript CLI for Synthetic Fraud Testing Data

Fraud systems are hard to test well. Not because engineers cannot write tests, but because the data needs to tell a story. A suspicious transaction is rarely suspicious because of one field. It is usually suspicious because of patterns: a new account with too many beneficiaries many transactions in a short window failed logins followed by a device change KYC failures mixed with country mismatch...

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3m read

HackerNoon - coding • 2026-05-13 20:33

How to Create the Heart Pattern in Python

Master nested loops and mathematical logic in Python by coding a perfect ASCII heart pattern. Learn the expert tricks behind rows, columns, and grid coordinates.Read All

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1m read

DEV Community • 2026-05-13 20:29

We moved daily standups into Slack

Every standup tool I've shipped, used, or watched a team adopt eventually loses to the same thing: people forget to open it. The product is fine. The form works. The prompts are reasonable. But it sits behind a tab that nobody has open at 9:14am, and so the submissions trickle in at 10:30, or 11, or never. By Wednesday the manager is back to chasing status in DMs. By Friday the standup tool is a ...

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6m read

newest submissions : multi • 2026-05-13 20:26

Court overturns Alex Murdaugh's murder convictions

submitted by /u/Strangeshark45 to r/news [link] [comments]

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1m read

Hacker News: Front Page • 2026-05-13 20:22

Meta won't let you block its AI account on Threads

Article URL: https://www.theverge.com/tech/929091/meta-ai-threads-account-block Comments URL: https://news.ycombinator.com/item?id=48126981 Points: 20 # Comments: 6

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1m read

How AI and Cursor Are Transforming Product Management: From PM to Builder

DEV Community • 2026-05-13 20:21

How AI and Cursor Are Transforming Product Management: From PM to Builder

By James Tang Introduction The role of a Product Manager (PM) has evolved. You are now expected to be a builder — someone who can quickly prototype ideas using AI, validate them with users, and then hand them off to engineers for production. One of the most valuable skills you can learn today is using Large Language Models (LLMs) together with Cursor, an AI-powered code editor, to generate and...

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4m read