
Kirill Firsov
@k_firsov
Founder and CEO at FearsOff | Protecting the World’s Top Crypto Exchanges & Financial Institutions | Cybersecurity Enthusiast
ID: 275415930
https://fearsoff.org 01-04-2011 06:58:05
110 Tweet
965 Followers
240 Following







🚨 Another Major Milestone Unlocked! 🚨 We’re proud to announce that FearsOff has officially claimed the #1 spot on Upbit Korea Top Hackers leaderboard — and the #1 Most Valued Hacker (MVH) ranking on PatchDay, the platform powering Upbit’s bug bounty program. For context,



🚨 Coinbase Breach = Bug Bounty Reality Check 🚨 Yesterday, bribed support agents leaked about 1% of Coinbase 🛡️ users’ personal identifying information (PII). • Criminals demanded $20 M. • Coinbase's CEO Brian Armstrong refused—but matched the demand as a $20M bounty for



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 Cybersecurity
