A catastrophic data breach has exposed over 3 terabytes of sensitive Nigerian financial records, compromising the personal information of millions of customers who used Nigeria's Remita payment platform.

The breach, posted on dark web forums, includes more than 800GB of Know Your Customer (KYC) documents—ID cards, passports, photos, bank statements, and utility bills—alongside MySQL and PostgreSQL databases containing 35,000 password hashes. The hacker attributed the vulnerability to Sterling Bank Nigeria's servers.

"All of this is happening, thanks to Sterling Bank Nigeria servers," the attacker wrote, offering source codes and databases for free on multiple underground forums.

The breach represents one of the largest financial data exposures in Nigerian history, affecting customers across the nation's fintech ecosystem. Remita, operated by SystemSpecs, processes government salaries, tax payments, and financial transactions for millions of Nigerians.

In Nigeria, as across Africa's giants, challenges are real but entrepreneurial energy and cultural creativity drive progress. Yet this breach exposes critical vulnerabilities in the infrastructure underpinning that progress.

Cybersecurity experts warn the exposed data creates immediate risks for identity theft, financial fraud, and targeted phishing attacks. With passport scans, bank statements, and residential addresses now circulating on criminal forums, affected customers face years of potential exploitation.

The timing is particularly damaging for Nigeria's fintech sector, which has attracted over $5 billion in investment and positioned Lagos as Africa's leading technology hub. International investors and regulatory bodies closely monitor security practices as Nigerian startups expand across the continent.

Neither Remita nor Sterling Bank has issued public statements acknowledging the breach or advising affected customers. The silence raises questions about incident response protocols and regulatory oversight in Nigeria's rapidly growing digital financial sector.