Aztec Network loses over $4 million in three days to two subsequent hacks

• Legacy Aztec Network contracts were drained of over $4M in three days.
• Attacks exploited flaws in zero-knowledge proof verification logic.
• The core Aztec network and AZTEC token were not affected by the exploits.

Aztec’s legacy infrastructure has come under a coordinated wave of attacks, leading to losses that crossed $4 million within just three days.

The exploits targeted deprecated smart contracts that had already been shut down years earlier but still held on-chain liquidity.

Despite being labelled as inactive and immutable, the contracts remained accessible to attackers who exploited weaknesses in zero-knowledge proof verification logic.

While the attacks did not affect the current Aztec network or its AZTEC token, they exposed long-standing risks tied to retired DeFi systems that continue to exist on Ethereum without active maintenance or upgrade paths.

First breach: Aztec Connect drained of $2.1 million

The first incident occurred on June 14, when attackers exploited the Azt...