Avis Car Rental has reported a data breach affecting nearly 300,000 customers, following unauthorized access to one of its business applications between August 3 and 6. The company launched an investigation, with cybersecurity experts, after the breach was discovered on August 5 and has since implemented enhanced security measures. While the exact nature of the attack remains unclear, there is no indication of ransomware involvement. Affected customers are being offered credit monitoring services, and Avis continues to improve its systems to prevent future breaches.