
Kirill Firsov
@k_firsov
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Founder and CEO at @FearsOff | Protecting the World’s Top Crypto Exchanges & Financial Institutions | Cybersecurity Enthusiast
Dubai, United Arab Emirates
Joined April 2011
How to bypass Cloudflare WAF?.@FearsOff #bugbountytips #cloudflare #waf #bypass. 1. Found an SQL injection but getting blocked by Cloudflare?.Here's a pro tip 😏
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The exploit for CVE-2025-49113 is already available for sale on the dark web. I feel sorry for anyone who hasn’t upgraded to the newest version yet. Doomsday is coming, believe me. #roundcube #CVE @FearsOff
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If you’re using cPanel, Plesk, ISPConfig, or DirectAdmin, you’re likely in the line of fire for CVE-2025-49113 – all of them bundle Roundcube by default. If your server/website exposes any of these ports: 2083, 2086, 2087, or 2096, you’re vulnerable. #CVE #roundcube @FearsOff.
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RT @mar1hachem: 🚨 Coinbase Breach = Bug Bounty Reality Check 🚨. Yesterday, bribed support agents leaked about 1% of @coinbase users’ perso….
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🥈 Scored the 2nd-highest bounty on @Hacker0x01 and broke into the Top 10 leaderboard three times in the past 30 days! Huge thanks to @cryptocom for trusting us with their security—now, back to hunting. 🐛🚀.#BugBounty #EthicalHacking #Cybersecurity
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RT @FearsOff: 🚨 Another Major Milestone Unlocked! 🚨. We’re proud to announce that FearsOff has officially claimed the #1 spot on @Official_….
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