Category: Collaboration

Secure Slack browsing

Secure Slack browsing means reducing risk from link-clicks, file shares, and impersonation attempts that start in chat and end in a browser.

Quick answer

Legba can isolate browser sessions while your team uses Slack.

These tools are full of shared links and external content. Isolation helps reduce exposure when users open unfamiliar destinations and downloads that start from Slack.

This page does not imply an official integration with Slack—it’s a guide to securing browser workflows around the app.

When you need this

Your team uses Slack in a browser every day.
You want to reduce phishing, malicious downloads, and session theft without slowing users down.
You need role-based policies for employees, admins, and contractors.

Last updated

2026-01-29

Common browser risks

Phishing links sent via DMs or shared channels that lead to fake logins or malicious downloads.
Impersonation of coworkers or vendors to request urgent credential resets or payments.
Malicious file shares that get downloaded and executed on endpoints.
Session hijacking and token theft via compromised extensions or risky browsing in adjacent tabs.
Data leakage from copying internal information from Slack into untrusted web apps or AI prompts.

Typical sensitive data in Slack

Internal messages and attachments.
Customer support details shared in channels.
Links to internal dashboards, tickets, and docs.
API tokens or secrets accidentally pasted into messages (high risk).
Workflow automation links and app integrations.
Incident response details that can help attackers if exposed.

Recommended policies by role

Support

Open customer-provided links in isolation by default; treat them as untrusted.
Restrict downloads from unknown senders and scan attachments before opening.
Avoid pasting secrets into Slack; use secure sharing via a secret manager.

Security

Isolate link investigation workflows to reduce endpoint exposure.
Deploy controls that reduce data leakage to GenAI tools from the browser context.
Harden account security for admins and high-risk channels (MFA, session controls).

Engineering

Open “new tool” download links in isolation and block installers from untrusted sources.
Use separate profiles for privileged consoles; don’t browse risky sites while authenticated to sensitive systems.
Avoid copy/paste of tokens and credentials between Slack and browser tools.

See Legba for Chrome