If you recently entered the world of cryptocurrency and have been exploring decentralized finance, or DeFi, the headlines from June 2023 might feel overwhelming. Over $95 million was lost in a single month to hacks, exploits, and governance attacks across multiple protocols. But understanding these risks does not mean avoiding DeFi entirely — it means approaching it with the right knowledge and precautions. This guide breaks down what happened and what you need to know to stay safe.
The Basics
Decentralized finance refers to financial applications built on blockchain networks, primarily Ethereum, that allow users to lend, borrow, trade, and earn interest on their crypto without traditional intermediaries like banks. Instead of trusting a company to manage your money, you interact with smart contracts — self-executing programs that automatically enforce the terms of each transaction.
While DeFi offers exciting possibilities like earning higher returns than traditional savings accounts and accessing financial services without geographic restrictions, it also introduces unique risks. When you deposit funds into a DeFi protocol, you are trusting that the underlying smart contract code is secure, that the protocol’s governance is not compromised, and that market conditions will not trigger cascading liquidations.
Why It Matters
June 2023 provided a textbook example of why understanding DeFi risks matters. The Atlantis Loans protocol on the BNB Chain lost approximately $1 million when an attacker exploited its governance system to take control of the protocol and drain user funds. Sturdy Finance lost $770,000 through a reentrancy vulnerability that manipulated price oracle data. These were not isolated incidents — they were part of a broader pattern of increasingly sophisticated attacks targeting DeFi protocols.
At the same time, the broader crypto market was experiencing significant stress, with Bitcoin trading around $25,851 and many altcoins down 20-30% following the SEC’s lawsuits against major exchanges. This combination of market volatility and protocol-level exploits created a particularly dangerous environment for inexperienced users.
Getting Started Guide
Before depositing any funds into a DeFi protocol, follow this safety checklist. First, verify that the protocol has been audited by at least two independent security firms, and read the audit reports if available. Audits do not guarantee safety, but unaudited protocols carry dramatically higher risk. Second, check whether the protocol has an active development team and community. Abandoned protocols like Atlantis Loans are particularly vulnerable because no one is monitoring for suspicious activity.
Third, start small. Deposit only an amount you can afford to lose entirely while you learn how the protocol works. Fourth, use a dedicated wallet for DeFi interactions — never connect the wallet that holds your primary holdings to any DeFi application. Hardware wallets like Ledger or Trezor provide the strongest protection for your main funds. Fifth, understand the specific risks of each protocol type. Lending platforms carry liquidation risk, liquidity pools carry impermanent loss risk, and governance tokens carry voting manipulation risk.
Common Pitfalls
New DeFi users frequently fall into several traps. Chasing the highest yield is perhaps the most dangerous — unusually high returns often indicate unusually high risk, or in some cases, outright scams. Failing to understand the difference between total value locked and actual protocol revenue leads to overestimating a protocol’s financial health. Connecting wallets to unfamiliar or unaudited contracts can result in token approvals that drain your funds without further action on your part.
Another common mistake is ignoring governance participation. If you hold governance tokens, the proposals being voted on can directly affect your deposited funds. The Atlantis Loans exploit succeeded precisely because the protocol’s governance was compromised through a legitimate-looking proposal that no one flagged in time.
Next Steps
Once you understand the basics of DeFi safety, expand your knowledge by studying specific attack types — reentrancy attacks, flash loan exploits, oracle manipulation, and governance attacks are the most common. Follow security researchers and firms like PeckShield, CertiK, and Trail of Bits on social media for real-time alerts about new vulnerabilities. Consider using tools like Revoke.cash to review and remove unnecessary token approvals from your wallet. Most importantly, treat DeFi as an ongoing learning process. The technology and the threats evolve rapidly, and staying informed is your best defense.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Always conduct your own research and consider consulting a financial advisor before making investment decisions.
95M in one month from exploits and that was considered a bad month in 2023. 2022 had bridges getting drained for hundreds of millions each
salt_wolf_ 95M was actually a slow month compared to 2022 bridge exploits. the real lesson is beginners should stay away from anything offering double digit APY
ronin $625M, wormhole $325M, nomad $190M. three bridges in one year and people still bridge without checking audit reports
bridge_watcher three bridges for over a billion combined and the article barely mentions them. bridging is still the highest risk action in defi by far
bridge_watcher ronin wormhole and nomad in one year. 3 bridges drained for over a billion combined and people still bridge without reading audits
95M lost in a single month and beginners still aped into the next yield farm without reading the contracts. nothing changes
the blind signing UX problem is still not solved in 2026. ledger and trezor both still show hex calldata on half the DeFi interactions
95M lost in june 2023 alone and that was considered a quiet month. 2022 had bridges dropping like flies every other week
governance attacks were the sneakiest. people obsess over smart contract bugs and miss someone buying enough tokens to pass a malicious proposal
wish i read something like this before aping into a yield farm that got rug pulled in 2022. the smart contract risk section is spot on
yield farm rug pulls in 2022 were brutal because the UIs looked so professional. smart contract audits help but you need to check who did the audit too
nftrat_ the fake audit problem was huge in 2023. firms like CertiK gave passes to protocols that got drained a week later. check who audited it AND their track record
Kwame Mensah CertiK auditing protocols that get drained a week later is the real scandal. their track record should disqualify them from being cited as a positive signal
good beginner overview but the article glosses over impermanent loss which catches more newcomers off guard than anything else
Sven P. impermanent loss is the one that gets mentioned in every post-exploit thread but newcomers still ape into 50/50 volatile pools without modeling it
the line about trusting smart contracts instead of companies is the whole pitch and the whole problem. code is law until the code has a bug
code is law until someone finds the bug then suddenly its please help us community. the social layer of DeFi is still its weakest point
gpu_viper_ code is law until the foundation gets drained then suddenly its a community decision to hard fork and reverse. the social layer overrides the smart contract every time when enough money is at stake
impermanent loss is the silent killer. newbies see 20% APY and dont realize the token ratio shift can eat all of it and more
IL is the silent killer. you see 20% APY on a pair, the ratio shifts, and suddenly your deposit is worth less than just holding
IL_sufferer impermanent loss is the one that destroys newcomers. they see 20% APY on a volatile pair and dont realize the ratio shift eats everything
95M in june 2023 was considered a slow month compared to 2022. that tells you everything about how normalized exploits became
Tinashe M. 95M in a month and beginners still aped into the next farm. the real issue is there is no cost to being reckless in DeFi until you lose everything. no FDIC, no insurance, no recourse
Eline D. no FDIC no insurance no recourse. thats the whole risk model in one line. beginners need to understand this before aping into anything