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yso

@0a_yso

Followers
632
Following
250
Media
55
Statuses
473

My crime is that of curiosity. Bug Bounty, Security Engineering, Dev and more Presented at Area41, DEF CON main stage, DEF CON Car Hacking Village

Zurich, Switzerland
Joined February 2019
Don't wanna be here? Send us removal request.
@0a_yso
yso
24 days
💰 Just 10 public bug bounty reports paid researchers $26,075,042 - all in Web3/DeFi. These are some of the biggest public bounty payouts ever. We're collecting them - and hundreds more - at VulnIndex, now live: 1/6.#BugBounty #DeFi #AppSec #hacking
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@0a_yso
yso
22 days
Oh wow, I just found out that @TechCrunch reported on a vulnerability 2 days after I discovered and reported. Despite that @OpenAI rejected me a bounty 🫠 #bugbounty.
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techcrunch.com
A few ChatGPT users have noticed a strange phenomenon recently: occasionally, the chatbot refers to them by name as it reasons through problems.
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@0a_yso
yso
24 days
On a side note - I am curious how long will it take to take this site down.
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@0a_yso
yso
24 days
Explore the alpha → (Mobile not yet supported).If you find it useful, like / repost / share so others in #AppSec and #BugBounty can too. #SecurityResearch #hacking #DeFi #infosec 6/6.
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@0a_yso
yso
24 days
Why dive in now?.• See how real-world failures happen.• Shortcut your research with known TTPs.• Focus testing on high-impact, stack-relevant bugs.• Learn from $ MM writeups 5/6.
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@0a_yso
yso
24 days
📈 Coming soon to VulnIndex:.• Thousands more reports.• New disclosure feeds.• Payout trend stats.• Top CWEs.• Full-text search.• API for tools/research → 4/6.
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@0a_yso
yso
24 days
✅ Filter by:. • Technology.• Language.• CWE.• Repro steps.• Vulnerable code.• Severity.• Award size.• Date . and more. Jump straight to original posts or submit your own writeups in 1 click. 3/6.
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@0a_yso
yso
24 days
VulnIndex (alpha) is a growing catalog of public bug bounty reports, security writeups, and research blogs. We're curating what matters to researchers and defenders. Here’s what you can do 👇 2/6.
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@0a_yso
yso
27 days
Who is Sadiq West and did they really get $500,000 bounty? Seems like a lie but if someone can confirm that - would love to hear. Link -> #bugbounty.
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medium.com
A very simple to any pentester, but most ’em show no care about it and yet critical vulnerability to the company, i know it wasn’t very…
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@0a_yso
yso
28 days
Just got to a 2nd place on the current Q3 at @yeswehack without submitting a single bug for more than 2 months :). Interesting situation
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@0a_yso
yso
1 month
Parsed 12k+ bug-bounty write-ups & blogs (and counting 24/7) and mapped each to CWE + language. Quick hits:.• ~60% of RCEs happen in PHP/JS.• >50% of GraphQL bugs are plain access-control issues. Free site coming soon - reply "access" for an early invite! #bugbounty #hacking
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@0a_yso
yso
1 month
P.S. I have nothing against such practice but it's fun from time to time.
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@0a_yso
yso
1 month
Sometimes I feel like interviewing at @Google is hell and the whole process is organized to just gatekeep unless you know people:.* constant reschedules.* interviewer no shows🫠.* interviewed by a Software Engineer on Security topics (no deep dives). wish myself luck😁. #hiring.
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@0a_yso
yso
1 month
If you ever want to get a similar database for free just follow and wait a few weeks as we are working on a product that will ship similar results for anyone to use and dig deeper into technologies they want #hacking #bugbounty.
@gregxsunday
Bug Bounty Reports Explained
2 months
If your GraphQL testing stops at introspection and ID swapping, you’re missing out. SQLi, CSRF, caching bugs, race conditions, WebSocket bypasses - it’s all there. I studies 90 real reports to find what actually works.
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@0a_yso
yso
2 months
A single parameter in the OpenAI and Anthropic SDKs can let an attacker overwrite your AI agent's system prompt, hijack every response, and - in some cases - even open a reverse shell from your server. Check out: . #bugbounty #hacking #0day #aisecurity.
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blog.ys0.dev
A single, unchecked parameter in the OpenAI and Anthropic SDKs lets an attacker overwrite your AI Agent's system prompt, take over every response, and, in some cases, open a reverse shell from your...
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@0a_yso
yso
3 months
If you shared a ChatGPT chat link between April 16-18, your name may have been exposed - and it could still be publicly visible. Details on the privacy vulnerability in @OpenAI : #hacking #bugbounty #openai #chatgpt #airedteam #0day.
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blog.ys0.dev
Sharing your chats has never been easier - you simply click Share, the conversation is anonymised, and you're clear to show what ChatGPT produced for you. There are no privacy implications - unless...
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@0a_yso
yso
3 months
Am I just lucky? 2nd triage on @Bugcrowd and 2nd shit show in a row. The triager just makes 2 contradictory statements at the same time and there is no option to request a response from a customer???. #bugbounty #hacking #bugcrowd
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@0a_yso
yso
4 months
I personally don’t care about the bounty at this point. The right thing to do is fix the vulnerability and/or disclose it so customers can address it themselves. 3/3. P.S. I can acknowledge now that my message might have been misunderstood - but it’s still a strange reaction.
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@0a_yso
yso
4 months
Imagine being warned that disclosing information found in a public component published by a company is "illegal" - while keeping that information secret puts a percentage of their customers at risk of losing user data, money, or revenue. 2/3.
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@0a_yso
yso
4 months
I've never seen this happen on other platforms - only on @Bugcrowd today. Instead of engaging in a dialogue to fix the bug and coordinate disclosure, my message was perceived as a threat??? I guess I am going to be banned soon? 1/3. #bugbounty #hacking #disclosure #0day
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