Browser attacks target third-party apps like Salesforce

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Browser attacks target third-party apps like Salesforce

Security teams are increasingly recognizing the browser as the primary attack surface for business applications and data. Attackers target third-party apps and services, aiming to steal credentials, extract sensitive data, and monetize it—examples include recent Snowflake and Salesforce breaches.

Modern work environments, with decentralized apps and diverse communication channels, make users more accessible targets. Unlike the past, when email and endpoint security sufficed, business applications are now largely accessed through browsers, making them a central point for attacks.

Common browser-based threats

1. Phishing & session hijacking

Phishing has evolved beyond email. Attackers now exploit instant messaging, social media, SMS, in-app messages, and even SaaS notifications. Reverse-proxy “Attacker-in-the-Middle” (AitM) kits bypass most MFA methods, except passkeys, and often operate at industrial scale using obfuscation and runtime evasion.

2. Malicious code delivery (ClickFix/FileFix)

Users are tricked into running malicious commands via browser prompts, clipboard instructions, or terminal commands. These attacks steal credentials, session cookies, and access to business apps. Browser-level detection can stop these attacks before they reach endpoints.

3. Malicious OAuth integrations

Attackers trick users into authorizing malicious apps, bypassing traditional login and MFA protections. Securing OAuth requires careful app management and visibility, which browser-based security tools can provide across all accessed apps.

4. Malicious browser extensions

Extensions can capture logins, session cookies, and browsing data. Attackers may compromise existing extensions or publish malicious ones. Monitoring installed extensions and their permissions is critical to mitigate risks.

5. Malicious file delivery

Files downloaded via browsers can contain client-side phishing pages or redirect users to malicious content. Recording downloads and analyzing browser activity adds a vital layer of protection.

Observing activity in the browser allows security teams to detect phishing, ClickFix, malicious OAuth, extensions, and risky logins in real time. It also provides insights into MFA gaps, credential theft, and apps lacking proper security configurations. By acting at the browser level, organizations can prevent attacks before they reach endpoints or compromise sensitive data.

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