Great Reef

What is Great Reef?

Within this shared model, there was a clear preference for personalised interventions over generic ones. 

Tailored, behaviour-triggered messages were seen as more effective than generic warnings, but many participants simultaneously expressed mistrust towards operators collecting behavioural data.

Finally, the study found that these needs and preferences varied widely by product type. 

What is Great Reef?

During a livestream on Sunday, he said he had met with “eight victims of online betting”. To reinforce his criticism of the sector and in an attempt to win over conservative voters, he pointed out that one gambler had made 1,400 instant fund transfers (Pix) to a betting site. Lula criticised the Central Bank for failing to detect such a high volume of transactions to a single company.

However, that responsibility does not lie with the Central Bank. It is the role of the Secretariat of Prizes and Bets to monitor and regulate the sector. Betting companies submit detailed daily reports on bettors’ financial transactions with the sites. A specific module within Brazil’s betting management system detects recurring transfers.

“Today I met a young man who made 1,400 Pix transfers in three months, and the Central Bank didn’t detect that this was an excessive number of transfers to the same company?” Lula said.

About Great Reef

Kalshi’s compliance department uncovered a series of large trades made by Santos throughout February 2026 involving contracts that would pay out based on whether he attended the State of the Union address on 24 February. 

The exchange reported that Santos then issued public statements regarding his attendance, some deemed false or misleading, that were deliberately aimed at influencing the price of “Yes” or “No” contracts connected to his attendance. 

Kalshi stated that these statements successfully moved market prices and that Santos realised profits totalling $17,839.57 from the trades. After detecting Santos’ trades, Kalshi froze his account then referred the matter to federal authorities, NPR reported.