> Infostealer 101_

What is Infostealer Malware?

Infostealer malware silently harvests passwords, browser data, and sensitive information from infected devices — then sends it straight to cybercriminals.

How Infostealers Collect Data

Modern infostealers are sophisticated tools designed to extract maximum value from infected machines in seconds.

Saved Passwords

Extracts stored credentials from Chrome, Firefox, Edge, and other browsers — including passwords you thought were secure.

Browser Cookies

Steals session cookies to hijack active logins, bypassing MFA entirely. Attackers can access accounts without knowing the password.

Autofill Data

Harvests addresses, phone numbers, and payment card details stored in browser autofill features.

Cryptocurrency Wallets

Targets wallet files and browser extensions for Bitcoin, Ethereum, and other cryptocurrencies.

System Information

Collects hardware IDs, installed software, and network details to profile victims and bypass security measures.

Application Data

Extracts credentials from VPN clients, email applications, FTP software, and other business tools.

How Data Reaches Criminals

From infection to sale, stolen credentials move through a well-organised supply chain.

Step 1
1

Infection

Victim downloads malicious software — often disguised as cracked software, game cheats, or legitimate-looking email attachments.

Step 2
2

Harvesting

The malware executes silently, extracting saved passwords and browser data in seconds. Some variants include keyloggers that capture new passwords as they're typed — sending them to attackers within milliseconds.

Step 3
3

Exfiltration

Stolen data is encrypted and sent to attacker-controlled servers via Telegram, Discord, or private servers.

Step 4
4

Packaging

Data is compiled into structured 'logs' — organised folders containing all stolen information from each victim.

Step 5
5

Distribution

Logs are sold in bulk on dark web marketplaces, Telegram channels, and automated credential shops.

How Does This Affect Your Business?

Stolen credentials create real costs — from lost revenue to expensive breach response.

Account Fraud & Chargebacks

When criminals use stolen credentials to access customer accounts, they make fraudulent purchases, drain loyalty points, or steal stored payment methods. You're left handling chargebacks, refunds, and angry customers.

Lost Revenue from Compromised Accounts

Customers whose accounts are taken over often leave for good. The trust is broken. Meanwhile, fraudsters using stolen access aren't paying customers — they're extracting value you'll never recover.

Increased Support Costs

Account takeovers flood your support team with password reset requests, fraud investigations, and compensation claims. Each incident costs time and money to resolve.

Reputation Damage

News of compromised accounts spreads quickly. Customers share bad experiences, and potential customers think twice. The brand damage from a credential-stuffing attack can far exceed the direct financial losses.

Impact on Organisations

Early detection of compromised credentials is essential for preventing costly breaches.

Detecting Infected Staff Machines

When employee credentials appear in stealer logs, it's a clear indicator their device has been compromised. Early warning enables rapid response before attackers can use the stolen data.

Blocking Account Takeover

Pre-emptive password resets and session invalidation stop attackers before they can leverage stolen credentials. Every hour of delay increases the risk of a successful breach.

Protecting Revenue

The average cost of a data breach exceeds millions. Continuous credential monitoring costs a fraction of breach response, making it one of the highest-ROI security investments available.

Protect Your Organisation Today

DarkStrata monitors for your credentials in stealer logs and alerts you before attackers can strike.

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