Altcoins

US state agency issues alert on crypto fraud happening over social media

The Vermont Department of Financial Regulation (DFR) — the United States state of Vermont’s financial regulatory agency — warned citizens against rising crypto investment frauds perpetrated over popular social media…

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July 22, 2023

Ethereum

Security Alert 1 [windows+alethzero] | Ethereum Foundation Blog

This affects users of Alethzero GUI client on Windows. Users of eth CLI client or not on the Windows platform are unlikely to be affected but should take action detailed…

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November 18, 2022

Ethereum

Security alert [consensus issue] | Ethereum Foundation Blog

This alert is related to a consensus issue that occurred on the Frontier network at block 116,522, mined on 2015-08-20 at 14:59:16+02:00 – Issue has been fixed, see "Fix" below.…

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November 17, 2022

Ethereum

Security Alert – [Implementation bug in Go clients causing increase in difficulty – Fixed – Miners check and update Go clients]

Implementation bug in the go client leads to steady increase of difficulty independent of hashing power. Affected configurations: All Go client versions v1.0.x, v1.1.x, release and develop branches. The bug…

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November 16, 2022

Ethereum

Security Alert – [Previous security patch can lead to invalid state root on Go clients with a specific transaction sequence – Fixed. Please update.]

  Summary: Implementation bug in the go client may lead to invalid state Affected client versions: Latest (unpatched) versions of Go client; v1.1.2, v1.0.4 tags and develop, master branches before…

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November 15, 2022

Ethereum

Security alert [Implementation of BLOCKHASH instruction in C++ and Go clients can potentially cause consensus issue – Fixed. Please update.]

Summary: Erroneous implementation of BLOCKHASH can trigger a chain reorganisation leading to consensus problems Affected configurations: All geth versions up to 1.1.3 and 1.2.2. All eth versions prior to 1.0.0.…

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November 13, 2022

Ethereum

Security Alert – Geth suffers from a very low probable DoS attack vector – Update immediately

Affected configurations: All Go client versions  Likelihood: Very low Severity: High Details: A bug in Geth (and potentially other clients) may suffer from a DoS attack and allows remote attackers to stall synchronisation process almost…

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November 6, 2022

Ethereum

Security Alert – cpp-ethereum keeps accounts unlocked

Affected configurations: cpp-ethereum (eth, AlethZero, ...) version 1.2.0 up to 1.2.5 (fixed in 1.2.6) Note: Neither "geth" nor "Mist" nor the "Ethereum Wallet" (unless explicitly used together with cpp-ethereum) are…

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November 5, 2022

Ethereum

Security Alert – cpp-ethereum’s account unlocking problem not yet fixed [Now fixed]

Affected configurations: cpp-ethereum (eth, AlethZero, …) version 1.2.0 up to 1.2.6 Note: Neither “geth” nor “Mist” nor the “Ethereum Wallet” (unless explicitly used together with cpp-ethereum) are affected by this,…

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November 5, 2022

Ethereum

Security Alert – Smart Contract Wallets created in frontier are vulnerable to phishing attacks

Affected configurations: All smart contract wallets created using Ethereum Wallet  Frontier, version 0.4.0 (Beta 7) or earlier. Wallets created with Ethereum Wallet 0.5.0 and all later versions released after March…

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November 4, 2022