Ivan Fitro

Blockchain Security Researcher

[Ivan Fitro @FitroIvan]

The results for the Virtuals Protocol audit by @code4rena are in.

This time, I secured 3rd place with a solo issue found, my first ever solo finding.

A year ago, I couldn't have imagined reaching this milestone. Discipline truly is the key.

[Ivan Fitro @FitroIvan]

@SuiInsiders Blockchain Security Researcher here🙌

[Ivan Fitro @FitroIvan]

@priyanshudotsol Solidity securiry researcher here🙌

[Ivan Fitro @FitroIvan]

@josepchetrit @aigentsbcn I will be there🫡

[Ivan Fitro @FitroIvan]

A new era of public competition is here.

As always, @sherlockdefi is pushing the boundaries and building the future.

Let’s hunt all the bugs.🪲

[SHERLOCK @sherlockdefi]

The next era of Web3 infrastructure deserves a brand new type of security review.

For @0xPolygon's Heimdall v2 upgrade, Sherlock is bringing that model to life.

June 15 to July 6.

[Kann Audits @KannAudits]

🚀 Kann Audits website has a new look

We’ve also added new pages and updates across the website.

If you haven’t checked it out yet, now’s the time!

https://t.co/bDhjnEUNpQ

[Ivan Fitro @FitroIvan]

@tegaDdeveloper Yes but more things are coming👀

[Ivan Fitro @FitroIvan]

Fuzzing fuzzing fuzzing🤓

[Ivan Fitro @FitroIvan]

This is my @code4rena profile. I’ll always keep it as a reminder of my beginnings in Web3 security.

This incredible platform gave me the opportunity to enter this amazing world knowing nothing about cybersecurity.

Thank you for everything.💜

[Ivan Fitro @FitroIvan]

@GalloDaSballo My first payout was there, very sad.🥹

https://t.co/RyHy264y3R

[Ivan Fitro @FitroIvan]

It’s very sad to see the history of @code4rena come to an end.

This platform will always be special to me because my first valid issue came from here.

Thank you for all the lessons and opportunities. One of the biggest names in Web3 security is leaving, we will remember you.

[Ivan Fitro @FitroIvan]

It’s very sad to see the history of @code4rena come to an end.

This platform will always be special to me because my first valid issue came from here.

Thank you for all the lessons and opportunities. One of the biggest names in Web3 security is leaving, we will remember you.

[Ivan Fitro @FitroIvan]

My first HIGH in @code4rena from the Althea Liquid Infrastructure contest.

Another small victory to add to my portfolio. Extremely pleased with the results I'm achieving.🥳

With hard work, anything is possible.

[Ivan Fitro @FitroIvan]

@0xpiramide @RareSkills_io 🫡

[Ivan Fitro @FitroIvan]

Just enrolled in the Invariant Testing Bootcamp by @RareSkills_io. 🛠️

Fuzzing is an incredibly sharp tool for uncovering those deep, edge-case vulnerabilities. The bear market is the best time to sharpen the saw and level up. Ready to get to work!

[RareSkills @RareSkills_io]

May 12, 2026

Apply for cohort 2 of Invariant Testing Bootcamp taught by @GalloDaSballo from the audit firm @getreconxyz

Did you know he's made over $500,000 in bug bounties?

You'll look forward to your classes.

https://t.co/niKSMcaKbA

[Ivan Fitro @FitroIvan]

@samuelarogbonlo @immunefi This is a bug bounty platform where you can search for vulnerabilities in already-deployed protocols.

[Ivan Fitro @FitroIvan]

I submitted my first issue to @immunefi 2 weeks ago. It was marked invalid, so I requested mediation.

Provided a new PoC, it was verified, and the team re-engaged.

It’s been 10 days, what’s the typical response time?

[Ivan Fitro @FitroIvan]

@neumoXX @josepchetrit @immunefi Yes, the team flagged it as AI-generated so it was declined. I hope the same too...

[Ivan Fitro @FitroIvan]

@joranhonig @PappaPug I have the same feeling

[Ivan Fitro @FitroIvan]

New Web3 jobs: Helping with the organizational side of managing a security agency.

Interested? 📩

[GiuseppeDeLaZara @windhustler]

🚨 JOB ALERT 🚨

I'm looking for someone to help on the organizational side of managing a web3 security agency (part-time).

Right now, the workload is 5–10 hours weekly, but it's looking to increase.

The work includes setting up processes, managing the process of the audit (setting up repos, generating reports, ensuring quality, setting up private/internal groups, etc.), and managing our portfolio.

The person should have experience with web3 security and have an eye for detail and great organizational skills.

DM at https://t.co/oS0Of1NCmR with an example of your personal polished portfolio or web page that looks organized.

[Ivan Fitro @FitroIvan]

@cyfrin Incredible💯

[Ivan Fitro @FitroIvan]

@PashovAuditGrp 🫡

[Ivan Fitro @FitroIvan]

Very happy to see this numbres and contribute to them.

Let’s keep working and pushing forward, and I’ll do my best to help secure the ecosystem throughout 2026.🫡

[Pashov Audit Group @PashovAuditGrp]

Here is our recap for 2025🫡

We've worked with multi-billion dollar projects, innovativative technologies & genius ethical hackers. It's been a pleasure. Immensely grateful! We salute you, let's make 2026 better and keep improving. Happy New Year🍾