Infostealers are driving today’s ransomware wave and stealer logs can be bought for as little as $10 on the dark web. At ISACA Europe 2025, Tony Gee, a principal cybersecurity consultant at 3B Data Security, urged security teams to deploy tactical defenses to protect against infostealers. Evolution of Infostealers Since the early 2000s infostealers have become a common weapon in the arsenal of cybercriminals to gain initial access to targeted systems, with the emergence of keyloggers such as Zeus and SpyEye. Around the early 2010s, new infostealer families like Vidar, Trickbot and Emotet, began integrating the capability to extract cryptocurrency. Now, a wide variety of new infostealers frequently appear with different features and capabilities, expanding a market that has largely been…