Fowler discovered a database with over 184 million login credentials exposed. The data leak includes various accounts like social media, banking, and government portals. The InfoStealer malware is suspected to have collected this data. Security risks include credential stuffing attacks and ATO, impacting individuals, organizations, and governments. Users are advised to enhance password management, enable 2FA, monitor accounts, protect cryptocurrencies, and use reliable security software to safeguard against cyber threats.