How do attackers use infostealer logs?

Stolen infostealer logs give attackers everything they need to impersonate real users, without logging in, triggering MFA, or raising alerts. These access methods vary in technique, but all exploit existing trust.

• Session hijacking: attackers take over active sessions using stolen cookies, bypassing authentication

• Token replay attacks: stolen tokens are reused to initiate new sessions via API or browser injection

• Password-based logins, many logs contain credentials for systems without MFA or with fallback logins

Once inside, attackers often:

• Abuse trust to escalate: sending internal messages or requests to trick others, reset credentials, or gain deeper access

• Move laterally: using internal integrations or single sign-on to navigate between systems

Because attackers use valid sessions or credentials, access looks legitimate, and often bypasses detection entirely.