Has Uniswap ever been hacked?

The core protocol has never been exploited across seven years and trillions in volume. Losses associated with Uniswap have come from malicious tokens, phishing sites and user approvals rather than from the contracts themselves.

What are Uniswap's fees?

Pool fees are 0.01% to 1.00% depending on the tier, paid to liquidity providers. The official interface adds its own fee on many swaps, and gas plus price impact complete the real cost.

Is Uniswap safer than a centralised exchange?

It removes custody risk — nobody holds your coins — and replaces it with contract, token and approval risk. For holding, self-custody plus a DEX is generally safer; for very large orders in stressed markets, deep centralised books may execute better.

Do I lose money providing liquidity on Uniswap?

You can. Impermanent loss means a divergence in the pair's prices can leave you worse off than simply holding, and concentrated positions that move outside their range stop earning fees entirely.

Uniswap Review 2026: Fees, Security Record and When to Use It

Name: Uniswap review
Item: Uniswap
Rating: 8.9
Author: OBOL

Uniswap is the most battle-tested piece of financial infrastructure in DeFi. Its automated market maker contracts have processed trillions of dollars in volume since 2018 under constant attack, and no version of the core has been drained. When we score security at 9.5 in this category, Uniswap is the benchmark that number refers to.

How Uniswap works

Liquidity providers deposit pairs of tokens into pools, and traders swap against those pools at a price set by the pool's ratio rather than by an order book. Since v3, providers can concentrate their capital within a chosen price range, which produces far deeper liquidity near the market price than a uniform curve. v4 adds hooks — plug-in contracts that let a pool implement custom logic such as dynamic fees or on-chain limit orders — with a singleton architecture that cuts the gas cost of multi-hop routes.

What a swap actually costs

The pool fee is 0.01%, 0.05%, 0.30% or 1.00% depending on the tier, with stable pairs at the low end and volatile pairs at the high end. That is not the full cost. Add gas — negligible on Base or Arbitrum, meaningful on Ethereum mainnet — plus price impact on your size, plus any MEV extracted between broadcast and inclusion. The official front end also applies an interface fee on many swaps, so routing through an aggregator or a different interface can be cheaper for the identical trade.

Security and upgrade risk

The v2 and v3 core contracts are immutable: no admin key can change them, which removes the single largest category of DeFi risk. Governance controls peripheral parameters, the fee switch and the treasury, not the pools holding your liquidity. The realistic risks to a user are therefore not protocol failure but the ones around it — approving a malicious token contract, signing a permit on a phishing site, or providing liquidity to a pair whose token can be minted at will.

Who should use Uniswap

Anyone swapping on EVM chains where the pair has real depth, and anyone providing liquidity who wants the most examined contracts available. Traders on Ethereum mainnet with small orders should use an L2 deployment instead, and anyone swapping stablecoins in size will usually get a better price on Curve. Check the quote against an aggregator before signing: on well-traded pairs Uniswap frequently is the best route, but not always.

#	Service	Best for	Cost	Score
1	Uniswap	Deep, dependable swaps on Ethereum and its L2s	0.01–1% per pool, set by tier	8.9
2	1inch	Cross-venue routing on EVM chains	No protocol fee on classic swaps; resolvers price Fusion orders	8.3
3	Jupiter	Best-execution routing on Solana	No protocol swap fee; you pay route costs and price impact	8.2
4	Curve Finance	Large stablecoin and pegged-asset swaps	~0.01–0.04% on stable pools	8.1
5	PancakeSwap	BNB Chain liquidity and cheap retail swaps	0.01–0.25% per pool	8.1
6	Aerodrome	Base-native liquidity	Variable per pool, typically 0.01–0.3%	7.8
7	Orca	Clean concentrated-liquidity provision on Solana	0.01–0.3% by pool tier	7.8
8	Velodrome	Optimism and Superchain liquidity	Variable per pool, typically 0.01–0.3%	7.6
9	Osmosis	Cosmos ecosystem trading	0.05–0.3% typical	7.5
10	Balancer	Custom-weight pools and LST liquidity	Set per pool, commonly 0.05–1%	7.3
11	Raydium	New Solana token liquidity	~0.25% standard pools, lower on concentrated	7.2
12	Trader Joe	Avalanche liquidity and volatility-aware LPing	Dynamic bin fees, typically 0.05–0.8%	7.2
13	THORChain	Native cross-chain swaps without wrapping	Dynamic slip-based fee, typically 0.1–1%	7.0
14	Camelot	Arbitrum launches and long-tail pairs	Dynamic, typically 0.1–0.6%	6.9
15	SushiSwap	Wide chain coverage on a familiar interface	0.3% classic pools; lower on v3 tiers	6.9

Service

Score

8.9

8.3

8.2

8.1

8.1