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@Thepracticaldev

A constructive and inclusive social network for software developers. With you every step of your journey.

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News

DEV Community
dev.to > solonjava > giving-an-ai-agent-a-real-sandbox-filesystem-and-network-jail-in-java-28bi

Giving an AI Agent a Real Sandbox: Filesystem and Network Jail, in Java

16+ hour, 18+ min ago   (733+ words) Ask a coding agent to run a build, and you have just handed a language model the ability to cat ~/.ssh/id_rsa. Prompt-level instructions like "do not read sensitive files" are not a security boundary — they are a suggestion to a…...

DEV Community
dev.to > ghchattaouibit > building-a-pi-hole-home-lab-from-an-old-pc-why-29h2

Building a Pi-hole Home Lab From an Old PC: Why

2+ day, 20+ hour ago   (373+ words) I've been learning Linux command line and going through MIT's Missing Semester course over the past few weeks, and I wanted a real project to apply it to instead of just following along with exercises. A friend is sending me…...

DEV Community
dev.to > biplabku > protocol-divergence-localization-finding-where-firewalls-block-your-traffic-514a

Protocol Divergence Localization: Finding WHERE Firewalls Block Your Traffic

3+ day, 20+ hour ago   (459+ words) The Problem You're debugging a connectivity issue. ping works fine, but curl times out. The usual approach: Run traceroute with ICMP - looks fine Run traceroute with TCP - dies at hop 6 Manually compare each hop Finally identify the firewall/ACL What…...

DEV Community
dev.to > vaibhav_shakya_e6b352bfc4 > how-attackers-abuse-firebase-misconfigurations-in-production-apps-3j23

How Attackers Abuse Firebase Misconfigurations in Production Apps

4+ day, 11+ hour ago   (218+ words) Firebase configuration embedded inside a mobile application is not the actual security boundary. The real risk begins when production services treat that configuration, an authenticated user, or the application interface as sufficient authorization. Attackers can reproduce legitimate requests outside the…...

DEV Community
dev.to > m_montazeri > a-practical-release-inventory-for-openvpn-deployments-13ii

A Practical Release Inventory for OpenVPN Deployments

5+ day, 7+ hour ago   (435+ words) When a new VPN release appears, the first useful question is: which component in our deployment does this release actually describe? Here is a small documentation method for turning those announcements into a reviewable deployment decision. It is a proposed…...

DEV Community
dev.to > abderaouf-b > building-my-ccna-packet-tracer-lab-collection-15fd

Building My CCNA Packet Tracer Lab Collection

6+ day, 8+ hour ago   (128+ words) I’ve started organizing my networking practice into a public GitHub repository: Instead of keeping every exercise only on my computer, I’m organizing my Packet Tracer labs in one place so I can: The repository is a growing collection of Packet Tracer…...

DEV Community
dev.to > josemariaosuorah > networking-foundations-for-modern-edge-iot-systems-43n9

Networking Foundations for Modern Edge & IoT Systems

6+ day, 19+ hour ago   (396+ words) Even though networking fundamentals are often taught at the early stages of a tech career, their... Tagged with architecture, infrastructure, iot, networking....

DEV Community
dev.to > lafine_systemsdesign > your-containers-are-not-a-security-boundary-what-cve-2026-53362-taught-me-the-hard-way-4p6i

Your containers are not a security boundary, and CVE-2026-53362 just proved it

1+ week, 22+ hour ago   (572+ words) On August 27, 2026, CISA added another Linux kernel vulnerability to its Known Exploited Vulnerabilities catalog. CVE-2026-53362, nicknamed "Frag Gap." An out-of-bounds write in the IPv6 fragmentation path. CVSS 7.8. Already being exploited in the wild. When news like this shows up, I've noticed…...

DEV Community
dev.to > 0xkikiola > i-wrote-a-security-policy-then-made-myself-break-it-4ho3

I Wrote a Security Policy, Then Made Myself Break It

1+ week, 23+ hour ago   (25+ words) A guardrail you haven't tried to violate is just documentation with better formatting. That's the... Tagged with aws, devops, security, terraform....

DEV Community
dev.to > coridev > your-ai-coding-agent-will-run-whatever-a-strangers-repo-tells-it-to-4kb9

Your AI Coding Agent Will Run Whatever a Stranger's Repo Tells It To

1+ week, 1+ day ago   (196+ words) Opening a folder shouldn't be a code execution vector. And yet here we are: an AI coding agent runs git status to "understand your project," and that alone is enough to hand an attacker a shell as you, with no…...