Cybersecurity researchers have documented a significant surge in credential theft during the second half of 2025, marking a fundamental shift in attacker methodologies. Rather than exploiting technical vulnerabilities to breach systems, threat actors are increasingly focusing on stealing legitimate user credentials to gain authorized access to networks and applications.
The escalation in credential-based attacks has been attributed to two primary factors: the industrialization of infostealer malware operations and the integration of artificial intelligence into social engineering campaigns. These developments have made credential harvesting more efficient and scalable for cybercriminal organizations.
Infostealer malware has evolved into a streamlined, industrial-scale operation that systematically harvests login credentials from infected systems. Meanwhile, AI-enabled social engineering attacks have become more sophisticated, allowing attackers to craft convincing phishing campaigns and impersonation attempts that successfully trick users into revealing their authentication details.
The trend represents a strategic pivot by threat actors toward exploiting the weakest link in cybersecurity: human users and their credentials. This approach often proves more reliable and less detectable than traditional network intrusion methods, as legitimate credentials allow attackers to blend in with normal user activity and bypass many security controls designed to detect unauthorized access attempts.