The corporate perimeter is no longer defined by a physical office wall or even a VPN. Today, it resides in the active browser tabs of your remote workforce. And right now, the primary weapon of choice for corporate initial access brokers is not a sophisticated "zero-day exploit", but a simple, widely distributed malware known as an InfoStealer.
According to the latest threat intelligence reports, modern infostealers can harvest and exfiltrate browser credentials in less than a minute once executed, with this stolen data listed on dark web marketplaces in under 24 to 48 hours to facilitate rapid network breaches.
What is an InfoStealer?
InfoStealers (such as Lumma, Redline, Vidar or RAT like Agent Tesla) are malicious software designed with one singular objective - to harvest and exfiltrate everything of value stored inside the user's web browsers. Unlike legacy keyloggers, modern infostealers silently dump:
- Saved usernames and passwords (autofill databases).
- Active session cookies (allowing hackers to bypass Multi-Factor Authentication).
- Cryptocurrency wallet configurations.
- Browser extensions, local data filesand system hardware fingerprints.
Once executed, the malware compiles this data into a structured archive, known in the cybercrime underground as a "log" and immediately exfiltrates it to the attacker's collection database or Telegram-bot. Within hours, these logs are uploaded to automated dark web marketplaces like "russian market" or distributed via Telegram channels, giving buyers immediate access to the compromised credentials.
Bypassing MFA Silently
Many organizations believe that enforcing Multi-Factor Authentication (MFA) or Single Sign-On (SSO) makes them bulletproof. However, because infostealers extract the actual session tokens (cookies) of already authenticated sessions, an attacker can simply import these cookies into a hardened browser. To the target service (whether it Dropbox or any other famous corporate service) the attacker appears as the legitimate employee returning to their active session - no password or MFA code required.
Is Your Corporate or Personal Data in a Dark Web?
Since these infections occur on personal devices used for work, home computers or through accidental downloads (disguised as cracked software, PDF readers or video game cheats), employees are often completely unaware their credentials have been harvested.
To help you check your exposure immediately and securely, AXON Security has built the AXON Breach Check online tool.
Check Your Exposure Safely & Anonymously
We believe security tools should respect your privacy. Traditional security checkers require you to trust them with your plaintext data, which may end up in their marketing lists or databases. The new AXON Breach Check tool operates with a strict client-side processing design:
- Zero Input Logging: Your queries are processed entirely inside your local browser. We never log or store the emails or usernames you enter.
- Secure Password Range Checking: For password checks, we use a secure k-anonymity API model. Only the first 5 characters of your password's SHA-1 hash are sent to verify exposure, keeping your actual password private.
- Threat Intelligence Matching: Checks email exposure against known database breaches and active malware infostealer logs.
Protecting your organization begins with identifying where the leaks are. Click the link below to check your emails and passwords for exposure immediately.