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Slack SOC 2, ISO 27001 & Security Compliance Certifications

Before you share customer data with Slack, your compliance team needs documented proof they can be trusted. ThirdProof investigated Slack across 27 intelligence sources — here's what we found.

⚠ FedRAMP Status: Not found in the FedRAMP Marketplace. Vendors handling government data or CUI must be FedRAMP authorized.

Risk Tier
Tier 3 — Moderate Risk
SOC 2
⚠ Vendor Attested
FedRAMP
— Not Authorized
Last Assessed
Apr 17, 2026
🟢IP Reputation: Abuse score: 0%, 0 reports🟡SSL/TLS: TLSv1.3🟢Domain Age: 33.5 years🟢Infrastructure: 2 open ports, 0 CVEs
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 100% confidence across 27 intelligence sources.

27 sources checked. Every investigation delivers two audit-ready artifacts: a risk report and an auto-filled security questionnaire — built from independent evidence, not vendor self-attestation.

Get Slack's Full Report Free →
No credit card|Risk report + auto-filled questionnaire|SOC 2 CC9.2 ready

Certification & Compliance Status

Need a complete vendor security questionnaire?

Run a full ThirdProof investigation to get 133 security questions auto-filled with source evidence — ready for your next audit or vendor onboarding review.

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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

FedRAMP authorized vendors →
◇27 data sources queried per assessment
◷Reports generated in an average of 7 minutes
◈SHA-256 verified for audit integrity
✓Deterministic risk scoring — no AI guesswork
Risk Tier
Tier 3 — Moderate Risk
Assessment
Conditional
Confidence
100%

Assessment Preview — 23 Sources Queried

Sanctions ScreeningClear — 2 matches checked, none confirmed
SSL/TLS GradeTLSv1.3
HTTP SecurityC+ (60/100)
Domain ReputationClean (no malware associations)
Infrastructure2 open ports, 0 CVEs
Malware & PhishingClean
IP ReputationAbuse score: 0%, 0 reports
Domain Age33.5 years
Certifications (Vendor-Attested)
FedRAMPGDPRCCPAISO 27001ISO 27018SOC 2HIPAA

Run your own investigation to see the full evidence chain, compliance assessment, and recommended actions.

Get Slack's Full Report Free →

Executive Summary Preview

Slack (slack.com) is a widely deployed enterprise SaaS collaboration platform assessed at Risk Tier 3 (Moderate Risk), reflecting a strong foundational security posture tempered by a small number of residual concerns that warrant buyer attention before deployment. Slack presents several meaningful positive signals across its security program: - FedRAMP Moderate authorization has been [independently verified via the FedRAMP Marketplace](https://marketplace.fedramp.

This is an excerpt. Run your own investigation to see the full assessment. Get Slack's Full Report Free →

Key Findings for Slack

SeverityFindingSource
infoTLS certificate renewal approachingDomain Analysis
infoClean domain reputationThreat Intelligence
lowSubprocessor list could not be parsedSupply Chain & Subprocessor Discovery
lowThreat intelligence pulses detectedThreat Intelligence (OTX)
mediumAI model training requires customer opt-outAI Data Usage Policy

5 total findings. Get Slack's Full Report Free →

Recommended Actions

  1. Obtain Slack's current SOC 2 Type II report — request it from your Slack account team or check the compliance portal at https://slack.com/trust/compliance. Many enterprise agreements entitle customers to a copy under NDA. Ask for a bridge letter if the report period ended more than 6 months ago.
  2. Resolve the AI training opt-out immediately: if your organization handles sensitive, confidential, or regulated data in Slack, submit an opt-out request to feedback@slack.com with your Workspace/Org URL and subject line 'Slack Global…' as specified in the published policy at https://slack.com/trust/data-management/privacy-principles. Document the confirmation for your data processing records.
  3. Verify ISO 27001 certification status directly with Slack's security team — request the certificate number, issuing body, scope, and valid-through date, then cross-check with the certifying body. Do not rely on the security practices page reference as confirmation of active certification.
Get Slack's Full Report Free →
183+
Vendors assessed
98%
Average confidence
<2 min
Time to report

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

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

What a ThirdProof assessment 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.

Full methodology, rule engine, and AI disclosure: /methodology

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 27 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.

Seeing this in an audit? ThirdProof lets you investigate Slack and every other vendor in your stack — average report time: 7 minutes. Get Slack's Full Report Free →

Frequently asked about Slack

Is Slack FedRAMP authorized?+
Slack is not currently listed on the FedRAMP Marketplace as of April 2026.
Does Slack have SOC 2 Type II?+
Yes — Slack holds SOC 2 (Type II not confirmed). Rated Moderate Risk — subprocessor list unavailable. See all 5 findings →
Is Slack on the OFAC sanctions list?+
Slack returned no matches in ThirdProof's OFAC SDN, EU Consolidated, and UN sanctions screening as of April 2026.
What is Slack's vendor risk tier?+
ThirdProof assigned Slack a risk tier of Moderate Risk with 100% confidence based on assessment across 27 intelligence sources as of April 2026.
Does Slack have SOC 2 certification?+
ThirdProof's assessment 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 safe for regulated industries?+
ThirdProof investigated Slack across 27 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 assessment to see the full risk breakdown.
Can I get an auto-filled security questionnaire for Slack?+
Yes. Every ThirdProof investigation of Slack produces two deliverables: an audit-ready risk report and a 133-question security questionnaire pre-filled with evidence from 27 independent sources. The questionnaire is mapped to SIG, SOC 2, HIPAA, PCI DSS and 9 other frameworks — answered without sending Slack a single email or waiting for a vendor response.
Is Slack safe to use as a vendor?+
Slack is a communications vendor that handles organizational messages and collaboration data. Safety depends on their current security posture, certification status, and how they handle your specific data. ThirdProof automates this evaluation across 27 intelligence sources — sanctions databases (OFAC, EU, UN), business registration verification, adverse media scanning, and cyber risk assessment — producing a deterministic risk tier with confidence score plus an auto-filled security questionnaire. Run a free investigation to see Slack's full risk profile.
Does Slack have SOC 2 certification?+
Yes — Slack holds SOC 2 + 6 other certs. Rated Moderate Risk — subprocessor list unavailable. See all 5 findings →
Has Slack had any data breaches?+
Data breach history is an important signal for any vendor, particularly communications platforms like Slack that handle organizational messages and collaboration data. 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. Each finding is linked to its original source with severity classification.
Is Slack on any sanctions lists?+
Sanctions screening is standard due diligence for communications vendors. ThirdProof screens Slack against OFAC SDN, consolidated international sanctions lists, and PEP databases. The screening uses entity name verification to reduce false positives. If Slack or any associated officers appear on a sanctions list, this triggers automatic escalation to the highest risk tier.
How do I assess Slack for vendor risk?+
Assessing Slack as a communications vendor involves verifying SOC 2, HIPAA BAA availability, and FedRAMP compliance, reviewing their subprocessor chain, and checking sanctions exposure. ThirdProof automates this across 27 intelligence sources in an average of 7 minutes — no questionnaires or vendor participation required. Your first 5 investigations are free.
How long does a ThirdProof assessment take?+
A ThirdProof assessment completes in an average of 7 minutes. 27 intelligence sources are queried in parallel — sanctions databases, business registries, threat intelligence feeds, certificate transparency logs, and more. The result is a deterministic risk tier with confidence score and audit-ready PDF report.
Is ThirdProof free?+
ThirdProof offers 5 free vendor assessments with no credit card required. Each assessment includes the full report — risk tier, confidence score, individual findings, executive summary, and PDF export. Paid plans start at $399/month for teams that need ongoing vendor monitoring.
Can I use a ThirdProof report as SOC 2 audit evidence?+
Yes. ThirdProof reports are designed to satisfy SOC 2 CC9.2 (vendor risk management) requirements. Each report includes SHA-256 integrity verification, methodology disclosure, source attribution for every finding, and AI content labeling. Auditors can independently verify the report's authenticity and trace each finding to its original source.
How is ThirdProof different from a security questionnaire?+
Security questionnaires require vendor participation, take weeks, and produce self-reported answers. ThirdProof queries 27 independent intelligence sources — no vendor involvement needed. Risk tiers are assigned by a deterministic rules engine (not AI opinion), and every finding links to its original source. You get an audit-ready report in an average of 7 minutes instead of waiting weeks for a questionnaire response.

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Slack is in your vendor stack. Can you prove you assessed them?

SOC 2 CC9.2, HIPAA, PCI-DSS, and CMMC all require documented vendor due diligence — not just knowing the answer, but having audit-ready evidence you verified it. Most compliance teams can't produce that documentation on demand.

ThirdProof investigates Slack across 27 intelligence sources in an average of 7 minutes — sanctions screening, cyber posture, SOC 2 verification, FedRAMP status, and more. Every investigation produces two deliverables: an audit-ready risk report and an auto-filled security questionnaire your prospects and auditors expect to see.

Get Slack's Full Report Free →See PricingBook a Demo
✓ 5 free investigations✓ Risk report + auto-filled questionnaire✓ No credit card required✓ Average report time: 7 minutes

Replaces $600–$900 in manual compliance consulting time per vendor assessed.