Why Infostealer Malware Demands a New Defense Strategy | UpGuard

This piece explains that modern breaches often begin with stolen credentials via infostealer malware, which exfiltrates not only passwords but also session cookies and device-level metadata that enable MFA bypass and targeted follow-on attacks. It advocates a device-centric response—invalidate sessions, isolate the endpoint, eradicate the malware, then reset credentials—and emphasizes prioritizing threat intelligence that includes IPs, hostnames, and system details to identify compromised devices. The article contrasts historical breach data with stealer logs, and highlights how UpGuard’s monitoring and guidance can provide actionable, contextual alerts and workflows to remediate infected endpoints effectively.