Q37
Do you have a current SOC 2 Type II report?
SOC 2 Type II: claimed_with_trust_page
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 RiskSOC 2
⚠ Vendor AttestedFedRAMP
— Not AuthorizedLast 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 queried. 100% confidence. Every Slack investigation produces both a risk report and an auto-filled security questionnaire — no vendor follow-up required.
Get Slack's Full Report Free →5 free investigations|Risk report + auto-filled questionnaire|Avg. 7 minutes
Certification & Compliance Status
Security Questionnaire — Auto-Filled
65 of 133 questions answered for Slack
Auto-filled from public evidence • 49% complete
Q38
Do you have ISO 27001 certification?
ISO 27001 claim found on trust page (Vendor attested)
Q41
Are you FedRAMP authorized? At what level?
FedRAMP authorized: Product: Slack; Provider: Slack Technologies; Status: Compliant; Impact Level: Moderate; Authorization Date: 2023-03-06T05:00:00.000Z
Q40
Are you HIPAA compliant? Do you sign BAAs?
HIPAA compliance / BAA claim found on trust page (Vendor attested)
Q42
Are you GDPR compliant? Do you have a DPA available?
GDPR compliance / DPA claim found on trust page (Independently verified)
+ 4 more compliance questions answered in the full report
Every investigation produces a full PDF report plus the complete 133-question questionnaire, mapped to SOC 2, HIPAA, PCI DSS, SIG, and more.
Get Slack's Full Report Free →✗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.
◇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
3Tier
Moderate Risk
Slack
Vendor Risk Assessment
Confidence Score100%
Based on data availability and source coverage
27
Sources Queried
27
Sources With Data
April 17, 2026
Last Assessed
Executive Summary
AI-generated analysis for Slack
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:
Key Findings
- FedRAMP Moderate authorization has been independently verified via the FedRAMP Marketplace (authorized March 2023), representing one of the most rigorous third-party compliance validations available for cloud services. - The domain has a clean reputation across threat intelligence databases, no active malware detections, and a minimal, well-controlled infrastructure footprint with only standard web ports exposed. - Encryption is strong: data at rest is protected using FIPS 140-2 compliant standards and data in transit uses TLS 1.3 with AES-256, as confirmed via direct connection testing. - The vendor publishes a public subprocessor page, a trust center, and a security practices page, indicating meaningful transparency. - SOC 2 Type II and SOC 3 are claimed on the trust and compliance page, and independent third-party penetration testing is confirmed. Three areas require buyer attention:
- Adverse media from November 2025 documents a security incident at Nikkei in which Slack was the affected platform, reportedly exposing sensitive data from over 17,000 users — buyers should assess whether their own endpoint and device management controls mitigate similar risk vectors. - Slack's AI data usage privacy principles page indicates an opt-out model for AI model training, meaning customer data may contribute to global model training unless administrators actively opt out — this requires action for data-sensitive deployments. Overall, Slack is a mature, enterprise-grade vendor with strong compliance credentials and significant transparency, but the opt-out AI training default and unconfirmed ISO 27001 status require buyers to take specific compensating actions before treating this assessment as complete.
Independence Statement
All evidence in this assessment was independently sourced from public registries, threat intelligence databases, domain analysis tools, certificate transparency logs, adverse media scans, and web archives without vendor participation or disclosure.
Investigation Findings
6 findings identified for Slack
1 critical2 high3 medium
critical
Adverse Media: security incident
Article from www.csoonline.com: "Nikkei's Slack breach leaks sensitive data from more than 17,000 users | CSO Online"
high
Adverse Media: Slack breach exposed sensitive data from 17,000+ users
2 article(s) reference security or regulatory concerns for "Slack": "Nikkei’s Slack breach leaks sensitive data from more than 17,000 users" (csoonline.com) https://news.google.com/rss/articles/CBMitgFBVV95cUxNOWl3Zml6UjB1RTQyWVBKT2lodG1taUVKN3B3ZTY3UFRuczNoOHdVUW1pVW1URUMzMTFGRlVvNkNpVDgzc2xLWjRhOG95N01haGF5eE1HWGhLTkpBMHI0NmVxQUVlYllqUHV0ZV9BSmYySEFXYXhmbUZhNFdjZWF3SGRmWUVZZ2hqbkxYWXQ0WGNCc2FOTU9laW5BNGF6NmFOcWhtUm9mRzBVR1ZMMEZnekYxZlVDUQ?oc=5; "Japanese media giant Nikkei reports Slack breach exposing employee and partner r..." (The Record from Recorded Future News) https://news.google.com/rss/articles/CBMiXkFVX3lxTE1FUHRJZmVtdjFLWjUyU3NfOXFsX0ZicEVCMnpUODBIQmJOc3hlLTBkVmtOdDFOXy13YUJYdHpyMS14RkZJa2ZzZUNZLVJoQXZ4XzVMd3B2cFZQa2hSX1E?oc=5
high
Adverse Media: Slack breach at Nikkei via employee PC malware infection
1 article(s) reference significant concerns for "Slack": "Nikkei Suffers Slack Breach After Employee PC Malware Infection" (CyberInsider) https://news.google.com/rss/articles/CBMikwFBVV95cUxOcmFZbi1pNm9FaUpzV3dtWTBmSTF3ajBUcDZmSVFxRjZuakRYQWFSemFmS0xVNEppZ0pLeWE1TV9UYkZSdkhld1NGbFBWbTd5MWs4QUhJdVhDUGR5Z3A4WVpodmwzQjZDSTdDQUVJSV9iV1dvZUpvT3RCckhxYUNkZ2RQNDhMLWVLS0lHQ0ZtdlhPQm8?oc=5
medium
HTTP Security Grade: C+
slack.com received a mediocre grade (C+). Some security headers are configured but improvements are needed. Note: This scan was performed on the marketing site (slack.com). The application endpoint (app.slack.com) may have different security headers. Verify the application domain separately.
medium
Multiple Certificate Issuers (10)
slack.com has certificates from 10 different Certificate Authorities. This may indicate inconsistent certificate management practices.
medium
AI Model Training Requires Opt-Out
slack.com may use customer data for AI training unless customers opt out. Review the opt-out process.
✓
Security Strengths
34 positive signals verified
✓
Tech Community Discussion: financial
Tech Community Sentiment →✓
Legal Entity Actively Registered
Business Registration →✓
[Filtered] LEI Registration Lapsed
Business Registration →✓
Sanctions Data Incomplete
Sanctions & Watchlist Screening →✓
Low-Confidence Sanctions Matches Only
Sanctions & Watchlist Screening →✓
No Adverse Media Signals
Adverse Media Scan (Fallback) →✓
Firmographic Data Available
Company Intelligence →✓
Domain Infrastructure Healthy
Domain Analysis →✓
Valid SSL Certificate
Domain Analysis →✓
2 Open Ports Detected
Infrastructure Exposure →✓
Established Domain (33+ years)
Domain Registration →✓
Clean domain reputation
Threat Intelligence →✓
Tech Community Discussion: legal
Tech Community Sentiment →✓
Large Certificate Footprint (2449 subdomains)
Certificate Transparency →✓
Established Web Presence (27+ years)
Web Archive History →✓
Domain in 50 Threat Intelligence Pulses
Threat Intelligence (OTX) →✓
Clean IP Reputation
IP Reputation →✓
Clean Safe Browsing Status
Malware & Phishing Check →✓
Clean Website Security Scan
Website Security Scan →✓
FedRAMP Authorization Independently Verified
Trust & Compliance Page Scan →✓
Certification Claimed: GDPR
Trust & Compliance Page Scan →✓
Certification Claimed: CCPA
Trust & Compliance Page Scan →✓
Certification Claimed: ISO 27001
Trust & Compliance Page Scan →✓
Certification Claimed: ISO 27018
Trust & Compliance Page Scan →✓
Certification Claimed: SOC 2
Trust & Compliance Page Scan →✓
Certification Claimed: HIPAA
Trust & Compliance Page Scan →✓
Subprocessor Page Found, No Entries Parsed
Supply Chain & Subprocessor Discovery →✓
Not Found as FDIC-Insured Institution
FDIC Institution Check →✓
No SEC Enforcement Filings Found
SEC Filing Search →✓
FedRAMP Authorization Confirmed via Registry
Certification Registry Verification →✓
HITRUST Directory Match — Manual Verification Required
Certification Registry Verification →✓
SOC 2 Compliance Claimed on Trust Page
Certification Registry Verification →✓
AI Data Retention Policy Not Specified
AI Data Usage Policy →✓
Deep Document Crawler Results
Deep Document Analysis →Recommended Actions
Steps to address findings for Slack
- 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.
- 4
Manually review the current subprocessor list at https://slack.com/help/subprocessors and document the entries for your GDPR Article 30 records. For each material subprocessor, confirm they are not subject to sanctions using your organization's preferred screening tool.
- 5
Review the Nikkei breach incident reported in November 2025 and assess your organization's endpoint device management posture — specifically whether non-enterprise-managed devices can authenticate to your Slack workspace, and whether MDM enrollment or device trust policies are enforced. The incident was attributed to a malware-infected non-managed endpoint, a risk your organization controls independently of Slack.
- 6
Document this assessment report with a reviewer signature and retention date to satisfy SOC 2 Trust Services Criterion CC9.2 third-party risk management evidence requirements. Retain through your next SOC 2 audit cycle.
Intelligence Sources Queried
27 sources in this assessment
27of 27 sources returned data
IP Reputation
AI Data Usage Policy
Threat Intelligence (OTX)
Adverse Media Scan
Certification Registry Verification
Certificate Transparency
Deep Document Analysis
Domain Analysis
FDIC Institution Check
Business Registration
Historical Media Search
Tech Community Sentiment
Company Intelligence
Adverse Media Scan (Fallback)
HTTP Security Scan
Sanctions & Watchlist Screening
AI Research Agent
Malware & Phishing Check
SEC Filing Search
Infrastructure Exposure
SSL/TLS Analysis
Supply Chain & Subprocessor Discovery
Trust & Compliance Page Scan
Website Security Scan
Threat Intelligence
Web Archive History
Domain Registration
Data Coverage Notes
Some data sources may have had limited availability during this assessment. This does not reflect negatively on the vendor.
- The subprocessor page at slack.com could not be parsed by automated methods; the current subprocessor list was not assessed for sanctions or safety checks in this cycle. Manual review is required.
- ISO 27001 registry verification via IAF CertSearch returned no confirmed certificate record. This may reflect a registry gap, a different legal entity name, or an absence of current certification — manual verification with Slack is required to resolve the ambiguity.
- AI data retention periods for Slack's AI processing activities were not specified in the published policy and could not be determined from publicly available sources.
- The adverse media finding references a security incident at Nikkei (a Slack customer), not a breach of Slack's own infrastructure. The root cause (endpoint malware on a non-enterprise-managed device) reflects a third-party deployment risk, but full technical details were not available in publicly accessible sources at the time of this assessment.
- HITRUST certification status returned a possible directory match at 90% confidence but could not be confirmed due to potential name collision — manual verification with Slack's compliance team is required.
- SSL/TLS analysis service deep cipher analysis data was not available for slack.com at the time of this assessment; TLS configuration was verified through direct connection testing only.
- Iso 27001 coverage was limited for this assessment. This does not confirm any deficiency — direct verification with the vendor is recommended.
183+
Vendors assessed
98%
Average confidence
<2 min
Time to report
Security & Compliance Profile
49% complete · 65/133 questions answered from public sourcesAre you Slack? Claim this profile to complete your security record. Buyers are reviewing this profile now.
Claim this profile →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.
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 27 Intelligence Sources
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.
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.
✓ 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.