Cybercriminals are shifting away from traditional phishing tactics toward infostealer malware that silently harvests credentials and sensitive data directly from infected devices. While phishing emails and fake login pages remain common, attackers increasingly prefer infostealers because they scale efficiently and require less victim interaction. Instead of waiting for users to manually enter passwords on fraudulent sites, these malware tools automatically collect browser-saved logins, session cookies, autofill data, cryptocurrency wallet details, and other stored information.
Infostealers typically arrive through malicious online advertisements (malvertising), fake browser updates, cracked software, game cheats, and dubious download sites. Once installed, they operate quietly in the background, making them harder to detect than traditional phishing attempts that often leave obvious clues like suspicious links or poorly designed fake login pages. Social engineering techniques like ClickFix trick users into executing malicious commands or scripts that infect their own systems.
The effectiveness of infostealers has increased partly due to widespread multi-factor authentication (MFA) adoption. By stealing active session cookies, attackers can bypass MFA protections entirely and access accounts without needing passwords or authentication codes. The malware-as-a-service (MaaS) ecosystem has also lowered barriers to entry, allowing less-skilled criminals to purchase ready-made stealer kits, loaders, and initial access services from underground vendors. This makes credential theft operations cheap to deploy and highly profitable.
Stolen data typically feeds a larger criminal economy where information is packaged and sold to specialized buyers. A single infected machine can generate multiple revenue streams: credentials sold to one buyer, session cookies to another, and corporate access or cryptocurrency wallet data to a third party. These buyers may focus on fraud, account takeover, business email compromise, or ransomware deployment. This division of labor allows infostealer operators to update code, rotate infrastructure, and launch new campaigns with minimal effort while affiliates handle distribution.
Security experts recommend avoiding sponsored advertisements and downloading software only from official vendor sites or trusted app stores. Users should never execute commands or scripts from websites, emails, or messages without verifying the source and understanding the action. Pirated software, game cheats, and cracked tools remain common delivery methods for infostealers. Browser extensions should come only from reputable developers with carefully reviewed permissions. Even legitimate-looking phishing emails require verification through separate channels before clicking links or opening attachments, particularly when messages create urgency around billing issues or security problems.
Source: https://www.malwarebytes.com/blog/threat-intel/2026/06/infostealers-are-becoming-the-go-to-phishing-payload