DNS posture
Dns health grade: a. zone transfer blocked.
90
A
Privacy controls
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CyberFurl completed this security preview for slack.com. DNS posture is strongest right now, while Email authenticity needs the most attention.
Unified external risk score across DNS, email, web, malware, breach exposure, and technical readiness signals.
Based on CyberFurl's latest external security audit, slack.com has a security score of 75/100 (Grade C+). This score is calculated across DNS configuration, email authentication (SPF, DKIM, DMARC), SSL/TLS certificates, web security headers, malware signals, and breach exposure data. The scan identified 3 issues that need attention.
A score of 75/100 indicates moderate security posture. slack.com has good fundamentals but there are areas that need attention to reduce external exposure.
CyberFurl checks the public email authentication records for slack.com including SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance). These protocols determine whether emails from slack.com can be trusted by receiving mail servers and whether they are likely to reach the inbox or be flagged as spam.
A public summary of the checks that surfaced the strongest visible signals in this report.
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DNS posture is currently the strongest area for slack.com at 90/A, while Email authenticity needs the most attention at 62/D. Priority issues include DNS settings need attention and DKIM signing and key strength. Email the report to get the full narrative and prioritized fix list.
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One primary exposure, one strongest control, and the remaining stages arranged as report rows instead of equal-weight dashboard tiles.
DKIM signing and key strength
Saved signals that support the scored audit without introducing another score layer.
These deeper checks are already part of the audit model and unlock in the emailed report or full workspace.
Expanded surface validation, exposure review, and deeper internet-facing checks.
External threat feeds, blacklist references, and malware heuristics.
Public-source incident monitoring is included. Private credential-corpus and employee-exposure intelligence expand on paid plans.
Surface readiness for public-infrastructure controls across common frameworks.
Short answers that explain how to interpret the public findings on this report page.
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