Axiom MEV Protection: Off vs Reduced vs Secure Explained

MEV protection is the single setting on Axiom most likely to be left wrong by default, and the numbers on what that costs traders are worse than most people realize.

Source: Axiom — official product image

What a Sandwich Attack Actually Is

A sandwich attack works by placing one transaction immediately before yours and one immediately after. The first pushes the price up right before your buy executes, so you pay more than you should; the second sells into the price impact your own buy created, capturing the difference. It only works against buys — there's no equivalent structure to exploit on a sell, since there's no price impact from your order to sandwich.

The Three Modes

Off. No protection at all. Your transaction goes through the standard, fastest available path with no defense against front-running. Fastest execution, highest exposure.

Reduced. Routes your transaction through Jito's bundle system — the same MEV infrastructure that also underpins Axiom's default priority-fee mechanics. This adds a meaningful layer of protection while staying relatively fast.

Secure. Routes exclusively through whitelisted validators. This is the slowest of the three modes because it trades away access to the fastest general-purpose path in exchange for a validator set specifically chosen to resist sandwich construction. Axiom's own documentation recommends this mode.

The Real Cost of Getting This Wrong

An October 2025 study by 0xGhostLogs found that Axiom users made up roughly 70% of Solana sandwich-attack victims over the prior year — approximately 529,000 SOL extracted across roughly 222,000 victims, with a peak of 87,000 SOL in a single month. That 70% figure isn't evidence that Axiom's infrastructure is uniquely vulnerable; it's better explained by Axiom simply carrying the largest share of Solana trading volume, combined with a real behavioral pattern of traders leaving protection off to shave milliseconds off execution.

Jito responded by banning 15 additional validators associated with the pattern, but the setting itself remains the more direct fix available to any individual trader.

When to Use Which Mode

This setting sits alongside your priority fee and Jito tip (both default to 0.001 SOL) as the levers that actually determine execution quality on Axiom — see our full fee breakdown for how those interact, and how Pulse and Axiom's trading tools work for the rest of the execution layer.