Account takeover (ATO) happens when an attacker successfully authenticates as a legitimate user and operates inside that identity. ATO can target consumer accounts for financial fraud or employee accounts for corporate espionage and ransomware deployment. Infostealer-derived credentials and session cookies are now among the most common ATO enablers.
ATO attacks are difficult to detect because they use valid credentials and sometimes valid session tokens. Monitoring for stealer log exposures before ATO occurs is one of the most cost-effective prevention strategies available to security teams.
See how infostealer logs power convincing takeover scenarios in our credential stuffing case study and how infections lead to enterprise breaches in our Nikkei breach analysis.