Vendor Intelligence Report

Slack SOC 2, ISO 27001 & Security Certifications

FedRAMP Status
Slack is not listed on the FedRAMP Marketplace as of March 2026.
SOC 2 Status
Slack has a SOC 2 claim detected on their trust page. Claim is vendor-attested — no public registry exists for independent verification.
Sanctions Screening
Slack returned no matches in OFAC SDN, EU Consolidated, and UN sanctions screening.
Risk Tier
ThirdProof assigned Slack a Moderate Risk tier with 80% confidence across 23 intelligence sources.

ThirdProof investigated Slack (slack.com) across 23 intelligence sources including sanctions databases, cyber risk scores, business registries, and more.

Sanctions
Screened
Cyber Risk
Scored
Compliance
Verified
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✗Not Listed on FedRAMP Marketplace

Verified against FedRAMP Marketplace API as of March 2026

Organizations with federal compliance requirements should verify this directly at marketplace.fedramp.gov.

Slack (Salesforce) is not independently listed on the FedRAMP Marketplace. Salesforce Government Cloud is FedRAMP authorized separately.

Source: FedRAMP Marketplace

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Risk Tier
Tier 3 — Moderate Risk
Assessment
Conditional
Confidence
80%

Investigation Preview — 23 Sources Queried

Sanctions ScreeningClear — No matches found
HTTP SecurityC+ (60/100)
Domain ReputationClean across 94 security engines
Infrastructure2 open ports, 0 CVEs
Malware & PhishingClean
IP ReputationAbuse score: 0%, 0 reports
Domain Age33.3 years
Certifications (Vendor-Attested)
SOC 2FedRAMPHIPAAGDPRCCPA

Full investigation report with evidence chain, compliance assessment, and recommended actions.

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Executive Summary Preview

Slack (slack.com) is a widely-deployed enterprise SaaS collaboration platform with a strong domain reputation and extensive infrastructure footprint consistent with its scale. The primary risk driver elevating this assessment to Tier 3 is a pattern of adverse media coverage linking Slack environments to third-party data breaches, most notably the November 2025 Nikkei incident in which malware on an employee device facilitated unauthorized access to Slack data affecting over 17,000 users.

This is an excerpt from the full ThirdProof investigation report. Get the complete report →

Key Findings for Slack

SeverityFindingSource
highSignificant adverse media in historical archivesHistorical Media Search
infoClean domain reputationThreat Intelligence
low5 certifications claimed but not independently verifiedTrust & Compliance Page Scan
lowThreat intelligence pulses detectedThreat Intelligence (OTX)

4 total findings in the full report. View all findings →

Recommended Actions

  1. Verify FedRAMP Moderate authorization independently: visit https://marketplace.fedramp.gov, search for 'Slack', and confirm the authorization status and scope. This takes under five minutes and resolves the most verifiable compliance claim.
  2. Request Slack's SOC 2 Type II audit report: contact Slack's security team at security@slack.com or visit https://trust.slack.com to request a copy. Many enterprise Slack accounts are eligible to receive this report under NDA — ask your account manager if you are unsure.
  3. Conduct a Slack workspace data hygiene review within 30 days: identify and remove sensitive data (credentials, PII, financial records) stored in channels, configure message retention policies appropriate to your data classification requirements, and document the outcome.

Full recommendations available in the complete report.

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What you'll see in Slack's report

Every ThirdProof report includes these sections

Risk Tier1–5 scale

Deterministic score based on evidence — not AI opinion

Confidence Score0–100%

Understand how complete the picture is — higher confidence means more data sources returned results

Individual FindingsPer-source

Each finding linked to its source with severity rating

Executive SummaryAI synthesis

Know exactly what to do next — plain-language guidance for your compliance team

Compliance Status3-tier verification

Independently verified, vendor attested, or not found

PDF ExportSHA-256 sealed

Audit-ready report with methodology disclosure

ThirdProof uses a deterministic rules engine to assign risk tiers. AI writes the narrative — rules drive the decision.

Intelligence Sources Queried for Slack

✓Sanctions & Watchlists
✓Business Registration
✓Adverse Media Scan
✓Company Intelligence
✓Domain Analysis
✓Infrastructure Exposure
✓Domain Registration
✓Threat Intelligence
✓Tech Community Sentiment
✓HTTP Security Scan
✓SSL/TLS Analysis
✓Certificate Transparency
✓Web Archive History
✓Threat Intel (OTX)
✓IP Reputation
✓Malware & Phishing Check
✓Website Security Scan
✓Trust & Compliance Scan
✓Subprocessor Discovery
✓FDIC Registry Check
✓SEC Filing Search
✓Historical Media Search
✓Certification Registry

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What a ThirdProof investigation covers

Sanctions Screening

Is Slack on any OFAC, EU, or UN sanctions list? Are any officers or affiliates flagged?

Cyber Risk Assessment

What is Slack's security posture? Threat intelligence scanning, known vulnerabilities, and security header analysis.

Business Registration

Is Slack a legitimately registered business entity? Corporate status, jurisdiction, and officer verification.

Adverse Media Analysis

Has Slack appeared in negative news coverage? Data breaches, lawsuits, regulatory actions, and complaints.

Domain & Infrastructure

Is Slack's website secure? TLS configuration, DNS hygiene, security headers, and domain age analysis.

Company Intelligence

What are Slack's firmographics? Employee count, industry classification, technology stack, and corporate structure.

Trust & Compliance Verification

Does Slack claim SOC 2, ISO 27001, HITRUST, or FedRAMP? ThirdProof scans trust pages for certification claims and cross-references the FedRAMP public registry for independent verification.

Supply Chain & Subprocessor Discovery

Who does Slack depend on? ThirdProof discovers subprocessors from vendor-published pages and runs sanctions screening and safe browsing checks against each one.

Regulatory & Financial Filings

Has Slack appeared in SEC enforcement filings? Is it associated with any FDIC bank failures? ThirdProof searches regulatory databases with entity verification to confirm attribution.

Slack Enterprise Compliance Context

Slack (now part of Salesforce) processes internal communications, file sharing, and integration data that often includes sensitive business information. Slack claims SOC 2, FedRAMP, HIPAA, GDPR, and CCPA compliance. Since the Salesforce acquisition, Slack's security program benefits from Salesforce's enterprise compliance infrastructure, but organizations should verify certification scope independently. For organizations also evaluating Salesforce products, consider assessing both vendors holistically to understand shared compliance boundaries.

Slack Security Posture

ThirdProof investigated Slack across 23 intelligence sources. Domain reputation is clean across 94 security engines with a 33-year domain history. Sanctions screening returned clear with no matches. No malware, phishing indicators, or IP reputation issues were detected. The HTTP security grade of C+ (60/100) reflects header configuration gaps that are common in complex enterprise applications but should be documented in your vendor risk register.

Compliance Resources

→ SOC 2 Vendor Assessment: What Your Auditor Actually Reviews→ SOC 2 CC9.2 Vendor Management with ThirdProof→ CMMC Level 2 Supply Chain Risk Assessment→ ABA Model Rule 1.6 Vendor Due Diligence for Law Firms→ Sanctions Screening for Vendor Due Diligence→ Vendor Due Diligence Checklist→ All 23 Intelligence Sources

Frequently asked about Slack

Does Slack have SOC 2 certification?+
ThirdProof's investigation found that Slack claims SOC 2, FedRAMP, HIPAA, GDPR, and CCPA compliance. Since Salesforce's acquisition of Slack, Slack's compliance program is integrated with Salesforce's enterprise security framework. Organizations should request Slack's current SOC 2 Type II report directly and verify that the scope covers the specific Slack services and data types relevant to your use case.
Is Slack FedRAMP authorized?+
Slack is not independently listed on the FedRAMP Marketplace. Salesforce Government Cloud holds FedRAMP authorization at Moderate impact level separately. Organizations with federal compliance requirements should verify whether Slack's GovSlack offering falls under Salesforce's FedRAMP authorization boundary or requires independent assessment.
Is Slack safe for regulated industries?+
ThirdProof investigated Slack across 23 intelligence sources and assigned a Moderate Risk (Tier 3) rating with 80% confidence. Sanctions screening is clear, domain reputation is clean across 94 security engines, and Slack claims SOC 2, HIPAA, and FedRAMP compliance. The Moderate Risk rating reflects factors beyond pure security posture — run a free investigation to see the full risk breakdown.
Is Slack safe to use as a vendor?+
Slack can be evaluated for vendor safety by checking sanctions databases (OFAC, EU, UN), verifying business registration through legal entity registries like GLEIF, scanning for adverse media coverage including data breaches and regulatory actions, and assessing domain security and cyber risk posture. ThirdProof automates this entire investigation across 23 intelligence sources and produces a deterministic risk tier (1-5 scale) with a confidence score. Run a free investigation to see Slack's full risk profile.
Does Slack have SOC 2 certification?+
To verify whether Slack holds SOC 2 certification, ThirdProof scans the vendor's trust page and security documentation for certification claims, then cross-references those claims against independent registries where available (such as the FedRAMP Marketplace for FedRAMP authorization). Certifications are classified as independently verified, vendor attested, or not found in evidence — ensuring you know the verification level of each claim.
Is Slack FedRAMP authorized?+
Based on ThirdProof's investigation, Slack is not currently listed on the FedRAMP Marketplace. Organizations with federal compliance requirements should verify this directly and consider alternative vendors with FedRAMP authorization where required.
Has Slack had any data breaches?+
ThirdProof's adverse media analysis searches multiple news APIs and public records for data breaches, security incidents, lawsuits, regulatory enforcement actions, and financial distress signals involving Slack. Each finding is linked to its original source with severity classification. The investigation also checks SEC EDGAR for enforcement-related filings and FDIC records for financial institution failures, providing a comprehensive public record review.
Is Slack on any sanctions lists?+
ThirdProof screens Slack against OFAC SDN, consolidated international sanctions lists, and PEP (Politically Exposed Persons) databases. The screening uses entity name verification to reduce false positives from similar names. If Slack or any associated officers appear on a sanctions list, this triggers an automatic escalation to the highest risk tier. No sanctions match is confirmed through a clean screening report in the investigation output.
How do I assess Slack for vendor risk?+
ThirdProof investigates Slack autonomously in under 2 minutes using 23 intelligence sources — no questionnaires, no vendor participation required. The investigation covers sanctions screening, cyber risk scoring, business registration, adverse media, domain security, and more. Reports are formatted for SOC 2, HIPAA, PCI-DSS, and CMMC compliance frameworks. Your first investigation is free.

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