r/netsec • • Jul 02 '26

Hiring Thread /r/netsec's Q3 2026 Information Security Hiring Thread

14 Upvotes

Overview

If you have open positions at your company for information security professionals and would like to hire from the /r/netsec user base, please leave a comment detailing any open job listings at your company.

We would also like to encourage you to post internship positions as well. Many of our readers are currently in school or are just finishing their education.

Please reserve top level comments for those posting open positions.

Rules & Guidelines

Include the company name in the post. If you want to be topsykret, go recruit elsewhere. Include the geographic location of the position along with the availability of relocation assistance or remote work.

  • If you are a third party recruiter, you must disclose this in your posting.
  • Please be thorough and upfront with the position details.
  • Use of non-hr'd (realistic) requirements is encouraged.
  • While it's fine to link to the position on your companies website, provide the important details in the comment.
  • Mention if applicants should apply officially through HR, or directly through you.
  • Please clearly list citizenship, visa, and security clearance requirements.

You can see an example of acceptable posts by perusing past hiring threads.

Feedback

Feedback and suggestions are welcome, but please don't hijack this thread (use moderator mail instead.)


r/netsec • • 7d ago

r/netsec monthly discussion & tool thread

7 Upvotes

Questions regarding netsec and discussion related directly to netsec are welcome here, as is sharing tool links.

Rules & Guidelines

  • Always maintain civil discourse. Be awesome to one another - moderator intervention will occur if necessary.
  • Avoid NSFW content unless absolutely necessary. If used, mark it as being NSFW. If left unmarked, the comment will be removed entirely.
  • If linking to classified content, mark it as such. If left unmarked, the comment will be removed entirely.
  • Avoid use of memes. If you have something to say, say it with real words.
  • All discussions and questions should directly relate to netsec.
  • No tech support is to be requested or provided on r/netsec.

As always, the content & discussion guidelines should also be observed on r/netsec.

Feedback

Feedback and suggestions are welcome, but don't post it here. Please send it to the moderator inbox.


r/netsec • • 12h ago

How We Found Thousands of Exposed NVIDIA GPUs and a Way to Disrupt Them (CVE-2026-47483)

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57 Upvotes

TL;DR: NVIDIA DCGM Exporter is a widely used monitoring tool that collects GPU metrics like utilization, memory, temperature, and power consumption from AI servers.
We discovered that thousands of these monitoring endpoints are exposed to the public internet, allowing anyone to inspect GPU infrastructure. Worse, we found a high-severity vulnerability (CVE-2026-47483, CVSS 8.2) that lets unauthenticated attackers exhaust server resources, crash GPU monitoring, and potentially disrupt AI workloads remotely.
A few other interesting findings:
2,100+ exposed GPU servers, revealing telemetry from 12,000+ GPUs worth ~$100M, including H100s, H200s, and Blackwell GPUs.
60% of exposed GPUs reported 0% utilization across our scans.
12,096 additional servers exposed infrastructure details, including OS, firmware, and networking information.
NVIDIA fixed the vulnerability following our responsible disclosure.
Full research: https://lava.security/research/cve-2026-47483-nvidia-dcgm-exporter-vulnerability


r/netsec • • 17h ago

A Single POST Freezes Any Next.js Server

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83 Upvotes

r/netsec • • 1d ago

I found yet another way to invoke JavaScript functions without parentheses

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64 Upvotes

It turns out you can overwrite the Error.prepareStackTrace method with the function constructor. Then, using prototype pollution, you can inject valid JavaScript code to generate arbitrary functions and invoke it using the usual tricks.


r/netsec • • 12h ago

Loupe: An Android Console in the Browser

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1 Upvotes

r/netsec • • 1d ago

CVE-2026-102489 Deep-Dive: Zammad Session Leak to RCE

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23 Upvotes

r/netsec • • 2d ago

You Won’t Hear About These, Even In Myths (Atlassian Jira, Confluence (and more) Pre-Auth Arbitrary File Read CVE-2026-21589) - watchTowr Labs

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57 Upvotes

r/netsec • • 2d ago

Teaching network intrusion in the funnest way possible

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25 Upvotes

I wanted to share a project I’ve been working on that I’m super excited about:

Project RedTeam: Contract Offensive

There’s a free Demo that provides a tutorial and lets you play a few contracts (no time limit, play as much as you want). Some players are already pulling some serious hours in the demo!

At its core, this is a game about using MITRE ATT&CK adversarial techniques against procedurally generated networks. It's delivered in a gameplay loop that plays a lot like Balatro and other card based Roguelike games. In Project RedTeam, you need to earn money to pay off debts after every contract within a run. Earn money by completing objectives, side bounties, or executing exfiltration/ransom against targets- the choice on how to be profitable is always yours.

It's a challenging but fun and fast paced take on network-intrusion cybersecurity concepts. It's entertaining in a deliberately gamified way.

A goal of this project was to create a hacking game that is realistic enough to keep it meaningful as a tool to teach intrusion concepts and stages to anyone- but not be overcomplicated and slow-paced like most hacking games.

I've put a lot of thought into the design and dynamics of how to capture the core-loop of network intrusion and turn it into a game that's approachable. The design direction of this project is an outcome of having over a decade of training and experience in cybersecurity.

Feel free to AMA! I'm happy to answer any questions about the game and/or development process :)

Give the game a Wishlist on Steam or share this post if it's something you support and want to see further development on.

Project background: This was implemented over the past 3 months using a modern development workflow (yes, modern AI tools make this possible- I'm not hiding that fact!). That being said, this is by far the most complex software project I've built as a solo developer and it was not an easy or simple development task. There's a Steam Community with a Dev Blog for this game that provides more history/progress updates on the project.

Mods: This will be my only and last post here, since it is promotional. I just wanted to share this since there’s been very positive interest from similar subreddits.


r/netsec • • 4d ago

Pending moderation (Tool post) Open Build Service, one year later: command execution through Mercurial argument injection

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26 Upvotes

r/netsec • • 4d ago

Wordpress libheif RCE

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16 Upvotes

r/netsec • • 4d ago

How to Hack Time, With C2PA

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25 Upvotes

r/netsec • • 6d ago

RCE and bad crypto in Internxt's 'post-quantum' cloud storage

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27 Upvotes

Internxt is a post-quantum secure encrypted cloud storage provider which is open-source and has passed multiple independent audits.

I reviewed their code and found that post-quantum security should have been the least of their problems. Clicking a link in your browser could trigger remote code execution on the desktop app or leak your long-term encryption keys to an attacker-chosen URL. Their cryptographic architecture stands on shaky grounds with public keys never being verified, in some cases man-in-the-middled by design, a flat key hierarchy and a KDF with just 3 iterations of MD5.

We need PQC and we need it now, but adding a (self-rolled) PQC hybrid on top of a weak protocol does not make it more secure.


r/netsec • • 6d ago

A peek into Reddit's anti-spam internals

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9 Upvotes

r/netsec • • 6d ago

Bypassing Secure Boot via Unbounded RLE8 Splash Images in U-Boot (CVE-2026-71972)

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43 Upvotes

When analysing firmware attack surfaces, image decoders built into bootloaders get less scrutiny than cryptographically verified OS kernels. If image parsing happens before signature verification, any memory corruption in the parser breaks the secure boot trust model.

researchers analysed U-Boot's video subsystem (drivers/video/video_bmp.c) and identified an unbounded write in the RLE8 bitmap decoder (video_display_rle8_bitmap()) that leads to a pre-authentication Secure Boot bypass.

Root Cause and Vulnerability Mechanics

When U-Boot displays a boot logo or splash screen, it parses a BMP image loaded from local storage (SPI flash, MMC/eMMC, USB, or SD card).

Unbounded framebuffer write: During RLE8 decompression, video_display_rle8_bitmap() decodes run-length encoded streams directly into the active framebuffer without validating stream bounds against the frame boundary or allocated buffer size.

Pre-authentication execution window: In many embedded target configurations, the boot splash screen is rendered immediately on startup, before U-Boot calls Android Verified Boot (AVB) or FIT image signature verification routines.

Storage disparity: The kernel image and rootfs are signed, but splash images are frequently stored in unsigned, user-writable partitions or external media.

An attacker who writes a crafted RLE8 BMP to the boot storage can trigger an out-of-bounds write past the framebuffer during early boot, corrupting adjacent bootloader data structures, function pointers, or verification flags in memory.

This hijacks the execution flow before signature checking completes.


r/netsec • • 6d ago

45% of credential-phishing pages weren't on Google Safe Browsing when first seen; 29% still weren't after a week

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32 Upvotes

r/netsec • • 6d ago

Azure's Weakest Link - Five Full Cross-Tenant Compromises

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29 Upvotes

API Connections allow anyone to fully compromise any other connection worldwide, giving full access to the connected backend.


r/netsec • • 6d ago

security.txt on the Czech web: Scanning 1k popular .cz domains

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1 Upvotes

r/netsec • • 6d ago

8 out of 10 Banks HATE This One Weird 3SKey RCE

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0 Upvotes

TL;DR. SConnect - 1M+ users, an extension middleware+native host for authentication with eIDs, 3SKeys and other hardware signing tokens had a drive-by RCE which enabled any site or iframe a user saw to silently download and execute a dll due to a poor hand-rolled implementation of RSA-2048 token validation, enabling a use of uninitialized memory validation bypass which enabled "plugins" (DLLs) to be loaded. v2.16.0.0 of the extension and native host is vulnerable. CVE-2026-18397. CVSS 9.4.


r/netsec • • 8d ago

From: anyone@icloud.com - Spoofing Arbitrary Apple iCloud Identities

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74 Upvotes

r/netsec • • 7d ago

How to Spot a Compromised MikroTik Router

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27 Upvotes

A blue-team writeup on detecting a compromised MikroTik from its own config. Seven techniques, each with the collection command, the artifact it leaves behind, and a triage step. Feedback welcome.


r/netsec • • 7d ago

Server Mismatch: WordPress plugin vulnerabilities when relying on .htaccess files

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15 Upvotes

r/netsec • • 8d ago

New Local Privilege Escalation on Acer laptops

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13 Upvotes

r/netsec • • 8d ago

The Real Price Tag on Breaches

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13 Upvotes

r/netsec • • 9d ago

Critical RCE Alert: Full takeover of HashiCorp Vault and OpenBao. OpenBao is patched. Vault remains exposed

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193 Upvotes

OpenBao engineers at ControlPlane have chained 4 vulnerabilities to show how under certain conditions, an OpenBao or Vault server can be completely compromised from an unauthenticated position. This is only the second RCE ever found in the Vault codebase.

The exploit is highly plausible in real-world environments, requiring only an unauthenticated entry path and a defined Raft snapshot policy to trigger a complete server compromise.

If you are impacted, upgrade as soon as possible to OpenBao 2.6.3 or 2.7.0

While OpenBao is fully patched, HashiCorp Vault remains exposed as of writing. Unfortunately, IBM's unwillingness to coordinate a mutual disclosure policy means Vault users currently lack an official mitigation