8 free tools · No account · Public records only
Free security tools: CVE, DMARC, SPF, DKIM and MX checks
Check whether a vulnerability is being exploited, test your email security and look up a domain’s mail servers in seconds. Every tool is free and needs no account.
Vulnerabilities
Vulnerability checks
Know which vulnerabilities attackers are using, and whether Scan Hub can read your scanner's export.
- Is this CVE being exploited right now?
CVE checker
Check any CVE against the CISA KEV catalog, its EPSS exploit score and CVSS severity, with a plain-English verdict.
Open the CVE checker - Will Scan Hub read your scan export?
Free pre-flight check
Upload an export from your vulnerability scanner and see what Scan Hub can read before you spend a credit. No account needed.
Run the pre-flight check
Email security
Email security checks
Stop people sending email that pretends to come from your domain.
- Can someone send email pretending to be you?
Email security check
One check for SPF, DMARC, DKIM, lookalike domains and suppliers, graded A to F, with the exact DNS records to fix it.
Open the Email security check - Is your SPF record valid?
SPF checker
See your SPF record, spot errors like too many DNS lookups or duplicate records, and get the exact fix.
Open the SPF checker - Is your email signed with DKIM?
DKIM checker
Find the DKIM keys your domain publishes, check their length, and learn how to switch on signing.
Open the DKIM checker - Is fake email in your name rejected?
DMARC checker
See your DMARC policy, whether spoofed email is rejected, and the exact record to publish.
Open the DMARC checker - Need a DMARC record?
DMARC record generator
Pick a policy and reporting address and copy a valid DMARC TXT record, with plain advice on moving from none to reject.
Open the DMARC record generator
DNS
DNS lookups
See where a domain's email goes and who hosts it.
Ran a vulnerability scan? Get the report.
Scan Hub turns an export from your scanner into a client-ready report, ranked by what attackers actually use. Try Core free for 14 days.