クリプトドットイン

暗号に強い人材のためのオルタナティブ・リンクトイン

Crypto Hackers Drain Over $36M From Protocols Using Unverified Contracts

-

によって

クリプトドットイン
で

A crypto hacker who drained $26 million from Ethereum-based protocol Truebit in January had likely practiced the technique on smaller targets first, according to blockchain analytics firm Chainalysis.

A Contract Left Exposed For Years

The Truebit exploit was the largest of four incidents Chainalysis identified in a new report covering the past six months. Together, those attacks — targeting Truebit, Trusted Volumes, Aperture Finance, and Ekubo — account for roughly $37 million in losses, all traced back to contracts whose source code had never been publicly verified on blockchain explorers.

The Truebit contract had been sitting on イーサリアム since 2021. It was compiled using Solidity v0.5.3, a version released before automatic overflow protections became standard. An attacker found an integer overflow flaw inside its bonding curve mechanism and used it to mint large quantities of tokens at minimal cost before converting them to ETH.

Why Closed Code Creates Open Risk

Verified contracts get reviewed. Bug bounty hunters read them. Independent researchers flag problems before attackers do. Unverified contracts get none of that scrutiny, and many bug bounty programs specifically exclude them from coverage — meaning vulnerabilities can sit untouched for years while millions of dollars flow through the affected code.

That gap is what Chainalysis says attackers are now exploiting. Each of the four compromised contracts lacked publicly available source code. Attackers worked instead from decompiled bytecode, converting raw on-chain code into readable output using tools like Dedaub, Heimdall, and Panoramix.

Once decompiled, the code can be fed into AI systems capable of spotting reentrancy flaws, arithmetic errors, and access-control weaknesses at a scale no human reviewer could match.

The $36.7 million figure is a fraction of total DeFi losses during the same period — Chainalysis puts the broader six-month theft total above $1 billion. But the firm argues the unverified contract problem could grow as automated analysis tools become cheaper and easier to use, allowing attackers to scan large numbers of dormant contracts and rank them by exploitability.

The Vulnerabilities Varied, But The Pattern Did Not

Across the four incidents, the specific bugs differed. Reports indicate weaknesses ranged from integer overflow and access-control failures to input-validation errors and identity verification flaws.

What they shared was the same protection gap: no public source code, no external review, and no real-time monitoring in place to catch abnormal activity before the funds were gone.

Chainalysis is recommending that protocols treat source-code verification as a baseline requirement for any contract holding user assets.

The firm also says audits and bug bounty coverage should extend to implementation contracts sitting behind proxy structures — components that often go unreviewed even when the front-facing contract is verified.

Featured image from CybersecAsia, chart from TradingView

コメント

コメントを残す

メールアドレスが公開されることはありません。 ※ が付いている欄は必須項目です

最新フィード

人気カテゴリー

ja 日本語
ja 日本語 en_US English ro_RO Română et Eesti ko_KR 한국어 ru_RU Русский de_DE Deutsch es_ES Español zh_CN 简体中文 fr_FR Français zh_TW 繁體中文 pt_PT Português it_IT Italiano pl_PL Polski tr_TR Türkçe nl_NL Nederlands id_ID Bahasa Indonesia el Ελληνικά uk Українська bg_BG Български cs_CZ Čeština fi Suomi hu_HU Magyar lv Latviešu valoda lt_LT Lietuvių kalba nb_NO Norsk bokmål sk_SK Slovenčina sl_SI Slovenščina sv_SE Svenska

ウェブサイトを検索

人気記事

タグ

#AlexeyPertsev (1) #Bidenクリプトバン (1) #Biden選挙 (1) #BinanceVsCoinbase (1) #ビットコイン (448) #BitcoinETF (3) #ビットコイン基礎知識 (1) #ビットコインの取り扱い (1) #Bビットコイン価格 (5) #BitcoinPriceLevel (1) #BitcoinPump (1) #BitcoinReserve (1) #ビットコイン・サージ (1) #Bitcoinトップ (1) #Bitfinex (1) #ビットワイズ (1) #BracebridgeCapital (1) #BRC20トークン (1) #BTC取得 (1) #Bullish予測 (1) #Bullishセンチメント (1) #中国鉱業 (1) #CPプレビュー (1) #CryptoAsset (2) #CryptoBattle (1) #CryptoBoom (1) #CryptoExpert (1) #CryptoInsights (1) #クリプトマニア (1) #CryptoMarket (4) #CryptoPrediction (1) #Crypto予測 (1) 1TP5トリプトレギュレーション (2) #CryptoTakeoff (1) #CryptoTiming (1) #CryptoTips (1) #CryptoTreasury (1) #CryptoUncertainty（暗号の不確実性 (1) #Dデリバティブジャンプ (1) #Dogecoin (74) #Dogecoinゲイン (1) #Dogecoinボリューム (1) #ダッチコート (2) #ECコマース (1) #ElSalvadorビットコイン (1) #Ethereum (73) #EthereumPain (1) #EthereumPrice (1) 1TP5専門家の意見 (1) #Fedレートカット (1) #FiatCurrency (1) #フィナンシャル・インパクト (1) #フィナンシャル・プライバシー (1) #Firmシャットダウン (1) #F凍結アカウント (1) 1TP5自己資金 (1) #InflationData (1) 1TP5投資 (1) 1TP5投資損失 (1) #日本ファーム (1) #法的措置 (1) 1TP5法的影響 (1) #法律 (1) #LightningNetwork (1) #市場分析 (3) #Mマーケットモニタリング (1) #M市場予測 (1) #市場予測 (1) #M市場予測 (1) #Mマーケットサポート (1) #マーケットボラティリティ (1) #マリッジ (1) #MemeCoin (5) #Memeコイン (2) #Miner収益性 (1) #マネーロンダリング (2) #MtGox (4) #北朝鮮暗号 (1) #ノボグラッツ予想 (1) #Priceマイルストーン (1) #P価格予測 (2) #Price質問 (1) #プライスサージ (1) #Prisonセンテンス (1) #QuantAnalysis (1) 1TP5規制圧力 (1) #SECアンチクリプト (1) #ShibaInu (6) #SocialBuzz (1) #技術分析 (1) #トンコイン (3) #トルネードキャッシュ (3) #TornadoCashDev (1) #TornadoCashデベロッパー (1) #UKクリプト (1) #Upsideポテンシャル (1) #USCongress（米国議会 (1) #ワイオミングランド (1) #XRP価格 (1) #XRPupswing (1)

お役立ちリンク

私が役に立ち、共有したいと思ったリンク