ABA

Founder and Principal Security Researcher at Cyba Blockchain Security, with 10+ years of combined Web2 and Web3 security expertise.

Audited smart contracts securing over $1B TVL, with 1000+ findings across 51 private and collaborative engagements*.

Former Security Researcher & Team Lead at Bitdefender's Cyber Threat Intelligence Lab.

Collaborated with top-tier security teams including Guardian Audits (EVM) and Clarity Alliance (Stacks, Bitcoin L2).

Ranked 🥇 1st in multiple audit contests; consistent top-10 finisher**..

Socials:

• Telegram: abarbatei
• Twitter (X): abarbatei
• Blog: abarbatei.xyz

Testimonials

Security Engagements

Security Engagements done in 2025 (25)

Date	Project	Audited Functionality	Organization	Ecosystem & Tech	Report
Dec	Zest V2	Borrowing and lending (further upgrades)	Clarity Alliance
Dec	Granite	Miscellaneous improvements	Clarity Alliance
Nov	Bitflow	HODLMM (upgrades)	Clarity Alliance
Dec	Zest V2	Borrowing and lending (upgrades)	Clarity Alliance
Oct	Hermetica	hBTC yield protocol	Clarity Alliance
Oct	Zest V2	Borrowing and lending	Clarity Alliance
Sep	Bitflow	HODLMM	Clarity Alliance
Sep	Hermetica	USDh upgrade and security enhancements	Clarity Alliance
Aug	Granite	Pyth oracle client upgrade	Clarity Alliance
Jul	Stacks Foundation	SIP-31 boot contract	Clarity Alliance
Jun	Liquify Ventures	Referral manager component upgrade	Independent
May	Liquify Ventures	Borrowing and lending protocol	Independent
May	Huego	On-chain turn-based strategic block placing game	ChainThreat
May	Granite	Timelock, flash-loan and daily caps integration	Clarity Alliance
May	StackingDAO	sBTC reward transfer logic changes	Clarity Alliance
May	Liquify Ventures	Deposit and claim component	Independent
Apr	ALEX Lab	Discrete Automated Market Maker (DAMM) swap	Clarity Alliance
Apr	Bitflow StableSwap	Unbalanced liquidity withdrawals extension	Clarity Alliance
Mar	iLayer	LayerZero integration for an intent-based orderbook	Independent
Mar	Hermetica	USDh minting contract	Clarity Alliance
Mar	Bitflow Flex Pools	Stableswap algorithm extension	Clarity Alliance
Feb	Accountable	ERC7540 vault implementation	Independent
Jan	Axelar	Cross-chain bridge	Clarity Alliance
Jan	iLayer	Cross-chain, intent-based orderbook	Independent
Jan	Inferno.fun	Bonding curve token launchpad	Independent

Security Engagements done in 2024 (22)

Date	Project	Audited Functionality	Organization	Ecosystem & Tech	Report
Dec	Granite	On-chain price oracle integration	Clarity Alliance
Dec	sBTC Reward Program	Staking contract	Clarity Alliance
Dec	sBTC	Bitcoin bridging mechanism	Clarity Alliance
Dec	Pyth Oracle	On-chain price oracle implementation	Clarity Alliance
Nov	Zest Protocol E-Mode	Extension on a borrowing and lending protocol	Clarity Alliance
Oct	Undisclosed	Bitcoin backed stablecoin	Undisclosed
Sep	Bitflow StableSwap Staking	StableSwap LP staking mechanism	Clarity Alliance
Sep	Bitflow StableSwap	Extension to the existing StableSwap implementation	Clarity Alliance
Sep	Zest Protocol BTCz	Bitcoin to Stacks BTC bridge	Clarity Alliance
Aug	Granite Safety Module	AAVE-like Umbrella Safety Module	Independent
Aug	Stacks Nakamoto Upgrade	Node infrastructure software	Clarity Alliance
Jul	BlastTheBalloon	Extension on my previous BTB audit	sub7
Jun	Granite	Borrowing and lending protocol	Independent
Jun	Pontis Bridge	Bitcoin asset bridge	Clarity Alliance
May	BlastTheBalloon	Blast on-chain lottery game	sub7
May	b0rder1ess	Extension on my previous NAP audit	Independent
May	DN404	ERC7631 standard co-joined ERC20 and ERC721 implementation	Guardian
Apr	Undisclosed	GMX V2 backed stablecoin	Guardian
Mar	Undisclosed	Staking and token migration	Guardian
Mar	Undisclosed	GMX V1 backed stablecoin	Guardian
Feb	b0rder1ess	NFTs backed by Uniswap V2 liquidity	Independent
Jan	Rest Finance	Liquid Restaking EigenLayer Integration	Guardian

Security Engagements done in 2023 (4)

Date	Project	Audited Functionality	Organization	Ecosystem & Tech	Report
Dec	Ithil	Borrowing, lending and options logic; GMX V1, AAVE, Fraxlend and Angle integration	Independent
Dec	Umami	GMX V2 market index: GMI	Guardian
Nov	Dolomite	GMX V2 integration; borrowing and lending GM	Guardian
Oct	PariFi	Perpetuals logic	Guardian

Public Audit Competitions done in 2023

Date	Contest	Platform	Rank	Official Report	My findings
Oct	Brahma	Code4rena	🥇 1st out of 51	Link	1M
Jul	Beedle - Oracle free perpetual lending	CodeHawks	7th out of 276	Link	5H 2M
May	Maia DAO Ecosystem	Code4rena	6th out of 101	Link	2H 4M
May	Juicebox Buyback Delegate	Code4rena	🥇 1st out of 72	Link	1M
Apr	EigenLayer	Code4rena	18th out of 43	Link	1M
Apr	ENS	Code4rena	21th out of 59	Link	Lows
Mar	Neo Tokyo	Code4rena	5th out of 123	Link	2H
Feb	OlympusDAO: Single Sided Liquidity Vaults	Sherlock	11th out of 154	Link	3H 1M
Feb	Fair Funding by Alchemix & Unstoppable	Sherlock	5th out of 107	Link	3M
Jan	OpenSea Seaport 1.2	Code4rena	6th out of 23	Link	Lows

Other Public Audit Contests

Date	Contest	Platform	Rank	Official Solution
Jun 2025	Race 42	Secureum	11th out of 49	Link
May 2025	Race 41	Secureum	9th out of 50	Link
Feb 2025	Race 38	Secureum	23th out of 47	Link
Jan 2025	Race 37	Secureum	4th out of 51	Link
Nov 2024	Race 35	Secureum	24th out of 91	Link
Sep 2024	Race 33	Secureum	16th out of 72	Link
Aug 2024	Race 32	Secureum	25th out of 69	Link
Jul 2024	Race 31	Secureum	8th out of 83	Link
Feb 2024	Race 27	Secureum	25th out of 140	Link
Oct 2023	Race 22	Secureum	13th out of 175	Link
Mar 2023	Race 16	Secureum	16th out of 205	Link

Educational content

• Labubu: Toy Story Gone Wrong
• Stack Too Deep And Indexed Event Logs
• Weird ERC721 Tokens
• DN404 - Vulnerabilities Reported And Resolved
• Blockchain reorgs for Managers and Auditors

Relevant Profiles

• Cantina
• CodeHawks
• Code4rena
• Sherlock