Password for
Slack
Slack now enforces a minimum of 8 characters, but for a work account that floor is still too weak. Your Slack login is the front door to your company's private conversations, shared files, and app integrations that reach into other systems — a single compromised account can expose an entire organization. The practical recommendation in 2026 is a 14-character random string, giving roughly 91.8 bits of entropy and putting a brute-force attack beyond any realistic offline GPU effort. An 8-character password offers only about 52.4 bits, short of modern guidance. Generate one below — it is created inside your browser using the Web Crypto API and is never sent to a server, logged, or stored. Pair the strong password with two-factor authentication, and if your workspace supports SSO, enrol through your identity provider so access is centrally enforced and revocable.
guesses / second
Slack password rules
Work accounts often have access to company data. A breach here can affect your whole organisation — treat this password like an admin credential.
The maths makes the case. Slack's 8-character minimum yields about 52.4 bits of entropy — below the 80-bit baseline NIST SP 800-63B treats as adequate against offline attacks, so a leaked hash could be cracked with enough hardware. A 14-character random string reaches roughly 91.8 bits, clearing that bar comfortably and making exhaustive search computationally infeasible offline, requiring centuries of sustained GPU effort. Every additional random character multiplies the search space, so the move from 52.4 to 91.8 bits is exponential, not incremental — it is the difference between a password a determined attacker can grind through and one that is effectively out of reach. For a shared workspace tool, that margin is the whole point.
Why Slack accounts are targeted
Slack is a high-value target because it concentrates an organization's internal knowledge in one place: candid discussions, credentials pasted into channels, financial details, and connected app integrations that reach into other systems. A single cracked account enables lateral movement — an attacker reads channel history, impersonates colleagues, and pivots into linked tools. Reused passwords make it worse: credentials stuffed from unrelated breaches are replayed across the company stack, and Slack is often where they land first. Because workspace messages feel informal, sensitive data leaks into them constantly, so attackers prize Slack access both for the data itself and as a launchpad deeper into the company.
Source for Slack's password rules: Slack's official help page.
Common questions about Slack passwords
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Reviewed by Marcin Lewandowski — product designer, 20+ years building digital products and privacy-respecting tools.
Last reviewed: . Reviewed quarterly; primary sources re-checked each review.