peterjson @peterjson
Offensive Security Engineer at @calif_io Vietnam Joined February 2018-
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Early this week, we had a meeting at Apple Park in Cupertino. While there, we also shared with Apple our latest vulnerability research report: the first public macOS kernel memory corruption exploit on M5 silicon, surviving MIE. It was laser printed, in honor of our hacker friends. Full story: open.substack.com/pub/calif/p/fi…
MAD Bugs: Claude Wrote a Full FreeBSD Remote Kernel RCE with Root Shell (CVE-2026-4747) To our knowledge, this is the first remote kernel exploit both discovered and exploited by an AI. blog.calif.io/p/mad-bugs-cla…
We have some exciting news to share: @blacktop__ is joining Calif to work on a range of R&D projects focused on Apple and AI security. If you work in the Apple security ecosystem, he’s already a household name. He’s the creator of: * ipsw – the ubiquitous Apple firmware analysis tool: github.com/blacktop/ipsw * darwin-xnu-build – reproducible XNU kernel builds: github.com/blacktop/darwi… * ipsw-diffs – automated diffing of Apple releases: github.com/blacktop/ipsw-… * The only public deep-dive on Apple’s Lockdown Mode: github.com/blacktop/prese… His tooling is so good that even Apple engineers use it. If you do reverse engineering, chances are you’ve touched his Rust headless IDA MCP server: github.com/blacktop/ida-m…. People have literally collected CVEs and bug bounties just by digging through the diffs produced by his tools. With @brucedang, @Little_34306 and now @blacktop__, we're building a serious Apple security force at Calif. We’ll have more announcements in this space soon! If you're interested in Apple security, AI, automated bug discovery, reverse engineering, or hacking, we’re hiring: calif.io/jobs.
A Race Within A Race: Exploiting CVE-2025-38617 in Linux Packet Sockets. A step-by-step guide to exploiting a 20-year-old bug in the Linux kernel to achieve full privilege escalation and container escape, plus a cool bug-hunting heuristic. open.substack.com/pub/calif/p/a-…
We hacked the AWS JavaScript SDK, a core library powering the entire @awscloud ecosystem - including the AWS Console itself 🤯 How did we do it? Just two missing characters was all it took. This is the story of #CodeBreach 🧵👇
“Vibe Hacking”: Abusing Developer Trust in Cursor and VS Code Remote Development blog.calif.io/p/vibe-hacking…
If you can motivate yourself to spend 8+ hours a day, 5 days a week to read through: - Atlassian - Jira - Slack - GitHub - Other internal SaaS applications without guaranteed results, you'll be an amazing red teamer.
Submitted this bug to ZDI a long time ago, but they weren’t interested 🥲. Later sent to Oracle, marked dup of CVE-2023-22047. CVSS 7.5 but leads to unauth RCE. Fortunately, some big programs accepted it. Check exploit here : github.com/tuo4n8/CVE-202… #BugBounty #InfoSec #Oracle
@tuo4n8 it's time to collect some 💸, great work btw 👏
Wormable Substack XSS: blog.calif.io/p/wormable-sub… It must have been years since the last time a wormable XSS was found in a major social media website. This beautiful type confusion XSS attack vector is a gift that keeps on giving. But most of all, @samykamkar is our hero!
Type confusion attacks in ProseMirror editors blog.calif.io/p/type-confusi…
Type confusion attacks in ProseMirror editors blog.calif.io/p/type-confusi…
New blog post: in a recent engagement, we turned a simple XSRF in Argo CD to a shell with cluster admin privileges. No fix is available. We recommend hosting Argo CD on an isolated domain. Details: blog.calif.io/p/argo-cd-csrf
CVE-2023-49105 WebDAV Api Authentication Bypass using Pre-Signed URLs POC Lazy coder + ChatGPT => nocode cc @vigov5 github.com/0xfed/ownedclo…
If you use cert-manager.io in AWS EKS, be aware of a privesc vector that leads to full cluster compromise. We recommend revoking pod creation permission and switching to domain verification using DNS. See the update at the end of this blog post: blog.calif.io/p/privilege-es…
Calif Inc: Privilege escalation in AWS Elastic Kubernetes Service blog.calif.io/p/privilege-es…
Pretty cool testimonial from @AnthropicAI. If you're into hacking AI models, we're hiring! docs.google.com/document/d/1SJ…
@testanull @Hu3skyS Better luck next time 🤣
Calif US Offsite Summer 2023
In a recent engagement, we encountered a target running CraftCMS, and discovered a Remote Code Execution vulnerability that allowed us to compromise the target. blog.calif.io/p/craftcms-rce CC @yeuchimse
shubs @infosec_au
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Pham Khanh @rskvp93
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pyn3rd @pyn3rd
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frycos @frycos
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Bien 🇻🇳 @bienpnn
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Soroush Dalili @irsdl
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Md Ismail Šojal �... @0x0SojalSec
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Nguyen Xuan Hoang @hoangnx99
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Alvaro Muñoz @pwntester
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Alex Matrosov @matrosov
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Swing @bestswngs
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Ashu （有关必回�... @Sec_211
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kernullist @kernullist
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No @backyard0810
0 Followers 39 Following
AbuMuslim (أبومُ... @m19o__
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Toan Pham @__suto
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say2 @say___2
653 Followers 279 Following SeHee Kim / iOS / Browser (safari/chrome sbx) / VR @dfsec_com 💪 / keep integrity
Griffendor @Griffend0R
0 Followers 203 Following
xsser @xsser_w
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Faroz @farozz__
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JK JK @jk090263
1 Followers 305 Following
mikecotic @mikecotic
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Leon @caothudanhgiay
87 Followers 468 Following I’m not a good developer I just have one surprising skill that makes me incredibly effective My secret? I read docs.
_ZN4DionC1Ev @justdionysus
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Quang Ha @r3st1231
0 Followers 29 Following
jaybird1291 @jaybird1291
260 Followers 581 Following Cybersecurity student at École2600 🇫🇷 - Focused on DFIR and Apple systems security - Learning Japanese on my own/日本語は独学で学んでいて、まだまだ初心者なので、間違いがあればご容赦ください🙇🏻♂️
annihilated_mollusk @AnnihilatedM
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mrch @mrchkz
1 Followers 159 Following
Ongia Noel @NoelOngia8195
0 Followers 101 Following
null sec @bynullsec
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sudi @sudhanshur705
6K Followers 801 Following If there's non zero chance, the effort is infinite, anything is possible
VietIfy IT Services @vietifysm
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Chris Isaias @_call_gate
145 Followers 3K Following Penetration Testing & Reverse Engineering. . . Phd(c), Msc (RHL), NATO, ESDC & RIPE fellow, IEEE snr, FIRST liaison, CISSP, CRTO, PNPT
kabuto-png @KabutoPng
0 Followers 156 Following
Trần Gia Nghĩa @th3_bl1nd3r
13 Followers 368 Following
vodanh @vodanh193
0 Followers 203 Following
Dq Hung @DqHung6
7 Followers 578 Following
Nguyen Huu Dat @r0ss0n3r1x
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cmx @Clim4xog
42 Followers 859 Following
cmdexploit @cmdexploit
2 Followers 179 Following
hypr @hyprdude
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Hao Tran (noah) @TranLyNhatHao
19 Followers 663 Following Working on blockchain security & program analysis Security Researcher at @cyberjutsu_io
fumo @nuts_727
0 Followers 22 Following
Nguyen Minh Tien @tiennmbk
1 Followers 145 Following
L4ys @_L4ys
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Thinkst Canary @ThinkstCanary
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Intigriti @intigriti
210K Followers 667 Following Bug bounty & VDP platform trusted by the world’s largest organisations! 🌍
TrendAI Zero Day Init... @thezdi
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Sam Curry @samwcyo
101K Followers 1K Following
shubs @infosec_au
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Ben Sadeghipour @NahamSec
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Julien | MrTuxracer �... @MrTuxracer
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Pham Khanh @rskvp93
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chompie @chompie1337
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payloadartist @payloadartist
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ϻг_ϻε @steventseeley
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cts🌸 @gf_256
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Gareth Heyes \u2028 @garethheyes
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bugcrowd @Bugcrowd
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James Kettle @albinowax
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pyn3rd @pyn3rd
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Nate @nnwakelam
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starlabs @starlabs_sg
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Joseph Thacker @rez0__
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Alex Matrosov @matrosov
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kernullist @kernullist
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Elias Bachaalany @eliasbchlny
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Juliano Rizzo @julianor
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Ariel @0xArielK
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NiNi @terrynini38514
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Nebula Security @nebusecurity
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skull @brutecat
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Stefan Esser @i0n1c
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Ben Ethington 🛠️ @XerzesX
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5K Followers 407 Following All things IDA, security, reverse engineering, programming, AI and more. Friend and fan of Hex-Rays but non-official.
𝙁 𝙀 𝙇 𝙄 �... @felixm_pw
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Giuseppe `N3mes1s` @N3mes1s
13K Followers 327 Following windows, macos, linux, android && lowlevel && ring-1 lover; EDR chef; malware hunter; purple team💜
Gi7w0rm @Gi7w0rm
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Defused @DefusedCyber
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Tim Blazytko @mr_phrazer
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Chaofan Shou @Fried_rice
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V4bel @v4bel
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Nicolas Chatelain @Nicocha30
418 Followers 310 Following Security researcher | Ligolo/Ligolo-ng/Chashell author
Arnold Osipov @osipov_ar
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Michael.Gorelik @smgoreli
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Init1Security @init1security
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DirectoryRanger @DirectoryRanger
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%TEMP% @TEMP43487580
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Steve Borosh @rvrsh3ll
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Moritz @m_r_tz
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Dennis Kniep @dennis_kniep
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Nevada @nevadaromsdahl
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