Two months after returning $200 million in stolen cryptocurrency, the Euler hacker sent two cryptic messages on Saturday — and the man who claimed to be an Argentine and a “Peronist” urged novice hackers to pursue bounties instead of stolen fortunes.

The messages were encoded in transactions carried out by the hackers on Saturday evening London time. The first message read "Bù en Áyre," meaning Buenos Aires. The hackers dedicated the second to "those beautiful people ... they are all Argentinian."

The message, written in Spanish, reads: "If there is an Argentine hacker and a Peronist, it is me and no one else! For hackers who are just starting out: don't be stupid, don't steal, don't offer bounties, etc." (Editor's note: Peronism is the slogan of "political sovereignty, economic independence, social justice" proposed by former Argentine President Juan Perón (1895-1974) in the 1940s.)

Euler’s TVL (an indicator of investor deposits in DeFi)

In March, hackers exploited a vulnerability in Euler’s code to steal about $200 million worth of cryptocurrency from the lending protocol. Due to Euler’s widespread integration with other DeFi protocols, the hack had a cascading effect on the ecosystem, causing losses to users of other protocols and causing a stablecoin to lose its peg.

However, after three weeks of negotiations, Euler was able to recover all of the “recoverable funds.” Because the hackers converted most of the stolen cryptocurrency into Ethereum, and the price of Ethereum increased during the negotiations, Euler was able to recover all of the stolen cryptocurrency and even more.

At the time, the hacker identified himself as a man named "Jacob" and apologized for the attack.

"I don't think what I said will help me in any way but I'm going to say it anyway. I screwed up! The rest of the money will be refunded ASAP. I'm only concerned about my own safety and that's why the delay is happening," the hacker wrote at the time.

The hacker’s relationship with Argentina is unclear. Media previously reported that the hacker sent 100 Ethereum worth more than $130,000 to an Argentinian Solidity developer.

The developer had pleaded with the hacker to return the 78 wrapped and staked Ethereum he lost. The hacker returned the cryptocurrencies and added some additional amounts. In an interview with the media, the developer promised to return the excess cryptocurrencies and denied any involvement with the hacker.

The hacker's most recent message included a cryptic warning: "Choose wisely in October, we'll be back."

It also refers to a seemingly non-existent social media account, @federicojaimeok.

Euler declined to comment on the latest news about the hackers.