Slope Wallet Hack

TOTAL LOST $5.3M
Medium Private Key Compromised (Stored Publicly) / Other solana

Summarize with AI

ChatGPT Perplexity Claude Grok
Affected Chain solana Incident surface
Recovered - No recovery reported
All-Time Rank #418 By amount stolen
Protocol Type Exploit/Other Target category

Incident Overview

Quick Summary

Solana was subjected to a major exploit due to which approximately 8k Slope wallets were robbed in the amount of ~ $5.2M.

Details of the Exploit

Slope is a web-based, non-custodial crypto wallet and browser extension that allows users to manage assets on the Solana blockchain.

Wallets on the Solana chain were compromised by a hacker who managed to gain access to users' private keys, thanks to which the hacker managed to withdraw funds to his address.

The hacker used a proxy to track network requests. Slope Wallet developers used Sentry to transfer data to the network. By default, Sentry does not use 2FA from which it can be concluded that most likely the Sentry Slope account was compromised, and since the data storage period in Sentry is 90 days, and it is possible to track the data of users who created their accounts in this period of time, the hacker gained access to the clean data of users' wallets such as mnemonic and private key. The vulnerability was also noticed in mobile devices based on android and iOS, most likely the application was written using the Flutter framework, which contains a bug, so the hacker also had access to private user data.

Block Data Reference

Hacker account address:

(SOL) 1) https://solscan.io/account/GeEccGJ9BE…BDbmuy

(SOL) 2) https://solscan.io/account/5WwBYgQG6B…wh1J3n

(SOL) 3) https://solscan.io/account/CEzN7mqP9x…hb3iEu

(SOL) 4) https://solscan.io/account/Htp9MGP8Ti…Sg4wxV

Address that received 0.5 $SOL from the Binance Hot Wallet on Solana: https://solscan.io/account/HYaQcKPcWg…37xYXv#solTransfers

(ETH) https://etherscan.io/address/0xc611952D81E4ECbd17c8f963123DeC5D7BCe1c27

This is classified as a Access Control Attacks . Compare similar hacks →

Incident Report

Protocol / Project Slope Wallet
Date of Incident
Affected Chain(s) solana
Attack Technique Private Key Compromised (Stored Publicly) / Other
Classification Infrastructure / Other
Primary Source View Post-Mortem

Protocol Information

Protocol Type Exploit/Other
Official Website solana.com/
Protocol Twitter/X @Solana
Team Anonymous
Source Code Unverified

Market Context at Time of Hack

Token Categories
Ethereum Ecosystem Binance Chain BNB Chain Ecosystem
Protocol Links
GitHub

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Operational-security tradecraft (phishing, malware, leaked seed phrases, or insider access) to obtain treasury signing authority
Capital Required Minimal capital - only enough to cover Solana network fees while draining the compromised accounts
On-Chain Access Valid signing authority over the compromised stake accounts and treasury wallets, allowing direct transfer of funds or stake authorization
Target Reconnaissance Identification of Slope Wallet's high-value treasury accounts and the authority / multisig structure controlling them
Execution Speed Speed to drain the compromised accounts before the team detects the breach and revokes signing authority or freezes the assets
Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Hard to catch — private key / OpSec failures are outside smart contract audit scope

If you're auditing a protocol with similar architecture to Slope Wallet, these are the critical security checks that could have prevented this incident (August 2022).

  • Verify all logic paths related to Private Key Compromised (Stored Publicly) / Other are guarded by proper access controls and input validation - see the Access Control Attacks attack class for patterns
  • Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Related Attack Classes

The technique used in this hack maps to these vulnerability classes in our security curriculum:

See all Access Control Attacks examples →

Access Control Attacks

Sources & References

Browse all hacks

These hacks used the same attack technique. Understanding the pattern helps prevent future exploits.

DEXX $21.0M
Private Key Compromised (Stored Publicly) / Other
Levyathan $1.5M
Private Key Compromised (Stored Publicly) / Other

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